heatbkits - American Radio History
easy-to -build
electronic kits for your
construction fun
HEATBKITS
TEST
EQUIPMENT
AMATEUR
EQUIPMENT
HI -FI
EQUIPMENT
HEATH COMPANY BENTON HARBOR, MICHIGAN
KIT INDEX
Alignment Generator
21
Isolation Transformer
All -Band Receiver
46
Laboratory Generator
AM Tuner
3
Amateur CW Transmitter
.
.
Amateur DX -100 Transmitter
.
Amateur Phone -CW
Transmitter
Amateur Radio Equipment
Amplifiers
.
.
.
29
Marine Equipment
55
Oscilloscope (5" Color TV)
Oscilloscope (5" Gen. Purpose)
19
Portable Radio
41
50
Power Meter (RF)
42
Antenna Impedance Meter
33
.
48
5, 7, 8, 9, 11, 12
Analog Computer
.
51
45
.
.
.
.
.
.
are easy-to-build...
53, 57
.
Power Supply (Regulated)
Power Supply (Vibrator)
18
.
Heathkits®
.
38
.
.
38
.
Preamplifier
4
53
.
Probes:
Antenna Power Meter
.
.
53
.
Audio Analyzer
High Voltage
25
Low Capacity
19
Peak -to -Peak
25
RF
25
14
Audio Generators
.
Audio Oscillator
16
Scope Demodulator
.
.
.
.
16
"Q" Meter
37
Balun Coil Set
49
"Q" Multiplier
47
56
Radiation Counter
43
Battery Charge Indicator
.
.
.
.
.
34, 35
.
Battery Eliminator Filter
44
Reflected Power Meter
36
Resistor Substitution Box
40, 41
Signal Generator (Audio)
Binding Post Set
.
46
Receiver (Broadcast)
.
Battery Tester
Broadcast Receiver
Receiver (All -Band)
34
.
.
40, 41
.
.
.
.
.
.
53
.
.
.
31
.
.
.
13
Capaci- Tester
33
Signal Generator (Color Bar)
Capacity Meter
32
Signal Generator (RF)
Color Bar Generator
22
Signal Tracer
Computer
42
Sine -Square Generator
Conelrad Alarm
47
Speaker Systems
Condenser Checker
31
Speaker (Utility)
Condenser Substitution Box
31
Square Wave Generator
Cross -Over (Electronic)
11
Sweep Generator
Crystal Radio
40
Transistor Direction-Finder
Decade Condenser
32
Transistor Radio
Decade Resistor
32
Transmitters
Direction Finder
55
Tube Checker
26
Electrolysis Detector
56
Tube Checker (Cathode Ray)
23
Electronic Cross -Over
11
Tube Test Adapter
26
54
Tuner (AM)
3
54
Tuner (FM)
2
44
TV Alignment Generator
.
.
.
Electronic Voice Control.
.
.
20,
.
.
Enlarger Timer
FM Tuner
2
.
.
22
.
.
.
.
17
6, 10
45
.
.
13
21
.
55
41
.
.
.
48, 50,
.
.
Vapor Detector
51
21
57
57
Vacuum Tube Voltmeter
Grid Dip Meter
45
VFO
Handitester
30
Vibrator Power Supply
15
Vibrator Tester
35
Voice -Operated Relay
54
High Fidelity Equipment
.
.
.
.
2
Instructions begin at the very
beginning, and even illustrate
and describe the proper procedure for making good
solder connections. You can't
go wrong if you follow the
directions.
21, 28, 29
Fuel Vapor Detector
Harmonic Distortion Meter
EXPLANATION OF
PROPER SOLDERING
PROCEDURE...
27
.
,
Everything you need to know
is contained in this dearly
written text. It has baen especially designed to take you
through every phase of assembly with ease, even
though you may be a complete newcomer to electronics.
19
Audio Wattmeter
Electronic Switch
MANUAL.
13
Audio Vacuum Tube
Voltmeter
Battery Eliminator
INFORMATION PACKED
CONSTRUCTION
13,15,17
.
16,
.
24
52
.
.
.
38
Ignition Analyzer
39
Voltage Calibrator
20
Impedance Bridge
36
VOM
30
BEAUTIFUL NEW GIFT CERTIFICATES...
Now you can give Heathkits in whatever dollar value you
cf-oose
and the recipient of /our gift can selec- the kits
he wants for the value of the certificate. Beautifully designed,
and appropriate for any occasior, this is the kind of certificate
ycu will be proud to send to a relative or friend, and which
will let them know how highly you regard them. Just send yoLir
lowci-eck in the amount you desire .
and specify the rame and
acdress of the recipient so this information can be stamped
or the certificate. The gift certificate will be returnees to you,
in its own envelope, so you can g ve it, or send it, in your own
special way. A fine gesture for birthdays and anniversaries,
and for the special gift -giving seasons throughout :ie yea-.
...
.
simple easy-to- understand
instructions with each Heathkit tell
you all you need to know ..
guarantee your success!
STEP -BY -STEP
ASSEMBLY
INSTRUCTIONS
..
LEARN -BY -DOING
EXPERIENCE FOR
ALL AGES ..
Kit construction is not on:y fun
-but it is educational loo! You
.
Read the step , .. perform the
operation
and check it off
...
-
learn about radio and electronic
parts and circuits as yo.1 build
your own equipment
and
this activity can make a fascinating hobby.
it's just that simple! These
plainly -worded, easy -to- follow
steps cover every assembly
operation, and let you rely on
our experience in kit construction.
...
EASY -TO- FOLLOW PIC-
INSURED SUCCESS FOR
FAMILY FUN ..
You can be sure of successful
kit construction when you buy
TORIAL DIAGRAMS ...
You'll get plenty of these detailed pictorial diagrams in your
Heathkit construction manual to
show where each and every
wire and part is to be placed.
Everything you do is spelled out
in pictures, so you can't miss!
Heathkit
a
because of
the
thought and care that gees into
every construction manual, and
the fine quality
supplied.
of the
parts
D
GET THE KITS YOU WANT NOW... CONVENIENT TIME PAYMENT PLAN!
HIGH FIDELITY EQUIPMENT
..
.
Time Payments open a complete new realm of choice for you
in making up the high fidelity system of your dreams. Instead
of purchasing one intern at a time and having cnly "half" a
system -you can now determine just what equipment you want
ün your home -and ourchase the entire system at once. You
can have high fidelity now -and for only 10% down!
AMATEUR RADIO GEAR
..
.
Any order totaling $90.00 cr more qualifies for time payments.
This means the DX -100 transmitter can be purchased with
easy budget payments, or for that matter, the smaller trans-
mitters too, if combined with other items of equipment You
can have the ham station you have always wanted, and have
a full year to pay.
SERVICE TEST INSTRUMENTS
..
.
I` you are a part -time or full -time serviceman you can benefit
from the Heath Time Payment Plan. The test instruments you
need to carry on your business may be had now, and they can
earn money for you while their cost is distributed over twelve
full months. Test equipment easily pays for itself, and you can
earn enough in less than a year to more than cover the cost of
a complete shop set -up of Heathkits.
4/
HEATHKIT
\
By
Daystrom
HIGH FIDELITY
FM Tuner KIT
FEATURES
Edge -lighted slide-rule dial for easy tuning.
Incorporates AGC, cascode front end, temperature- compensated
oscillator for stability.
Efficient, modern circuit uses miniature tubes throughout.
MODEL FM -3A
$2595
Pre -aligned IF and ratio transformers-partially pre -assembled
front end -easy to build.
(with cabinet)
Two outputs-one fixed, one variable, with extra stage of
amplification.
SPECIFICATIONS
Tuning Range
88 -108mo
IF Frequency
Antenna Input Impedance
Output Impedance:
10.7 me
300 ohm
Fixed Output
47 K ohm
Variable Output
15 K ohm
Output Voltage: (30% modulation at 100 uv input)
Fixed Output
012 volts
Variable Output
5 volts
1
20 db Quieting
88 me
Sensitivity:
98 me
108 me
Tube Complement
UNALIGNED
8 u
volts
volts
volts
10 u
15 u
ALIGNED
5 u
8 u
9 u
volts
volts
volts
1-6X4 rectifier
-6BQ7A cascode -type RF amplifier
1-6U8 oscillator -mixer
2 -6CB6 IF amplifier
-6AL5 ratio detector
-6C4 audio amplifier
1
1
1
Power Requirement
105 -125 volts 50 -60 cycles AC 35 watts
Dimensions Overall
Net Weight
Shipping Weight
125'16" long x 331"
5
lbs.
8
lbs.
highs 5%" deep
The Heathkit model FM -3A Tuner is a time -proven unit that offers
sensitivity, selectivity, and stability not expected at this price level,
and will bring you a rich store of FM programming, your least expensive source of high fidelity material.
Its efficient, modern circuit uses 7 miniature tubes to provide
better than 10 microvolts sensitivity for 20 db of quieting. A high gain, cascode -type RF amplifier is used ahead of the tuner to
increase overall gain and reduce oscillator leakage. A stage of audio
amplification is also provided for more than adequate output, an
added advantage since it allows operation with any amplifier
system regardless of sensitivity. Two outputs are provided, one
fixed and one variable so output can be controlled at the amplifier
or at the tuner. Another fine feature is the ratio detector type output
transformer which has the advantage of being self AM limiting,
eliminating the need for two limiter stages. The limiting threshold
encountered with discriminator type transformers does not have
to be overcome, allowing it to pick up many more stations of listen able quality without distortion. For this reason the FM -3A although
rated at only 10 microvolts sensitivity will outperform 2 and 3 microvolt tuners. Automatic gain control is provided and the oscillator circuit is stabilized through the use of special temperature- compensated
condensers for positive lock -in characteristics. Steady no -drift
operation after initial warmup. The tuner has its own built -in power
supply and covers the entire FM band frequency range of 88 to 108
megacycles.
One of the outstanding features of the model FM -3A is the ease
with which it can be constructed, even by a beginner. The fact that
the trans - ormers are pre -aligned, and the front end unit partially
pre -assembled and pre -aligned, means that stations may be tuned
in as soon as the unit is completed. Then it can be "peaked up" to
to a received station as described in the manual for maximum
sensitivity.
The wiring is accomplished by following check -off type step -bystep instructions and large, clear, pictorial diagrams. It is not
necessary to read a schematic diagram. The manual even contains
information on soldering techniques, tips for beginners on circuit
wiring, in= ormation concerning required tools, etc. Your success is
assured through Heathkit complete construction manuals.
An edge -lighted slide -rule dial is provided for easy tuning, and
unit is housed in an attractive ventilated cabinet (included with the
kit) it can also be mounted in a "custom" installation if desired.
The FM -3A is an excellent performer using only high -quality components throughout. A worthwhile addition to any hi -fi system for
years of outstanding performance. Shpg. Wt. 8 lbs.
H
EAT H
'''l',T
By Daystrom
BROADBAND
AM Tuner
KIT
FEATURES
Broad band -width for greater frequency response.
Illuminated tuning dial covers 550 to 1600 kc.
MODEL BC -1A
Excellent sensitivity and selectivity.
$2595
Power supply built in -low -noise loop antenna supplied in kit.
Beautiful satin -gold cabinet furnished with kit.
(with cabinet)
SPECIFICATIONS
Tuning Range
IF Frequency
Antennae
Outputs
Output Voltage
Distortion
(measured with 100 uvolts
550 -1600 kc.
455 kc.
Low impedance electrostatically shielded loop or
conventional straight wire.
Two outputs are provided, one at medium impedance fixed level, the other at low impedance
from a cathode follower with variable level control.
volt rms with 3 microvolt input up to 11 volts
maximum with .1 volt input.
1
400 Cycle
signal)
Signal to Noise Ratio
At 70% modulation measured as 2.6% with 1.6%
measured from the generator.
40 db below 100 uvolts 30% modulated at 400 cps.
Better than 3 uvolts across entire band measured
from source impedances of 50 ohms or less.
Better than 12 db across entire band at rated
Adjacent Channel Selectivity
sensitivity.
27 db with broad response, 29 db. narrow band
Hum and Noise
Sensitivity for 1 volt output
response.
Tube Complement
Power Requirements
This exciting tuner incorporates features not usually expected in
an AM circuit. Designed especially for use with high fidelity systems,
the BC-1A provides broad bandwidth, and is capable of flat response
from 20 cps up to 2 kc with 7 db of pre- emphasis at 9.5 kc to corn pensate for station rolloff above 5 kc. This pre- emphasis is employed
to provide additional "brilliance" to the higher frequency sounds.
Frequency coverage is from 550 to 1600 kc. RF bandwidth is 20 kc.
Additional outstanding features are a 10 kc whistle filter to reduce
the whistle caused by beats between the carrier tuned and an
adjacent channel. 6 db signal -to -noise ratio at 2.5 uv. Pre -aligned
RF and IF coils, for simplified alignment. Only three minor trimmer
adjustments to make.
Most commercial AM tuners conform to a definite circuit configuration and engineering has been toward high sensitivity and
selectivity but with standard bandwidth, which is rather narrow,
limiting response from the tuner to 5 kc or less. In many cases, this
is sufficient, since many broadcast stations limit their transmitter
response to 5 kc. A large number of stations have flat response to
10 kc however, and it is impossible for one of the standard tuners
to take advantage of the wider range transmission. In rare cases,
full bandwidth AM to 15 kc will be found and the program material
Dimensions Overall
Net Weight
Shipping Weight
1 -6X4 rectifier,
-6BA6 RF amplifier, 1 -6BE6
oscillator mixer, 1 -6BA6 IF amplifier, 1 -12AÚ7
audio amplifier -whistle filter- cathode follower output, 2 germanium diodes voltage -doubler detector.
105 -125 volts 50-60 cycles AC 26 watts.
1
12 -9/16° long a 3 -5/8° high x 5 -7/8° deep.
6 lbs. 10 o2.
8 lbs.
in this case can almost be considered "hi -fi" except for the necessarily limited dynamic range. Obviously, almost all of this type of
signal would be lost in a conventional tuner and the station would
sound the same as one with 5 kc limited response.
The efficient, modern circuit uses miniature tubes throughout
plus two crystal diodes connected in a voltage doubler circuit,
which has several advantages. Audio and AVC voltage output is
double that obtained with conventional types, so less audio gain is
required and AVC action is substantially improved, reducing distortion and improving performance on modulation peaks. The power
supply is built -in with well filtered B +. Incorporates AVC (automatic
volume control) -two outputs, one fixed and one variable -two
antenna inputs, one for low impedance, low -noise external loop
(furnished with kit), and one for high impedance long wire.
A wide band AM tuner also is easier to tune than a conventional
tuner, the response and noise quieting remain the same over a wide
tuning range. This is a great help when the "uninitiated "members
of the household use the system. Shpg. Wt. 8 lbs.
HEATHKIT
By Daystrom
"MASTER- CONTROL" HI -FI
Preamplifier KIT
FEATURES
Clean, modern lines and satin -gold enamel finish.
5
MODEL WA -P2
$1975
switch -selected inputs, each with its own level control.
Separate bass and treble controls, special hum control.
Equalization for LP, RIAA, AES, and early 78's.
(with cabinet)
Real high fidelity performance for the finest audio systems.
SPECIFICATIONS
Inputs
Power Supply
Three high-level and two low -level inputs; individual level controls for each. High -level inputs,
1, 2 and TUNER, for 0.1 volts or higher; 0.5 megohm input impedance.
Low-level inputs, PHONO and MIC, for 0.1 volts
or lower; phono input impedance normally 22 K
ohm for magnetic phono pickup; microphone input
impedance 2.2 megohms.
1.0 db from 25 cps to 30,000 cps.
1.5 db from 15 cps to 35,000 cps.
05 volt at TUNER input; 72 db below 2.5 volts
RMS.
6 mvat PHONO input; 62 db below2.5 volts RMS.
15 my at MIC input; 70 db below 2.5 volts RMS.
Separate bass and treble tone controls. Bass control provides approximately 18 db boost and 12 db
cut at 50 cps. Treble control provides approximately 15 db boost and 20 db cut at 15,000 cps.
Requires power from external source, as follows:
Dimensions
Cabinet only: 12 -9/16' long, 3 -3/8' high,
Frequency Response
Hum and Noise
Tone Control
6.3 v AC at 1.0 amp.-300 v DC at 10 ma.
4
-7/8'
deep.
Weight
Overall: 12 -9/16' long, 3 -5 /8' high,
Net weight: 3 -1/2 pounds.
Shipping weight: 7 pounds.
5 -7/8' deep.
planning the purchase of a really fine hi -fi system or improving a
present one, the WA -P2 should receive your serious consideration.
It has many fine features that will eventually be desired. Designed
to operate with the Heathkit models W -3AM, W -4AM, W -5M and
W -6M amplifiers or their equivalent, this control- center provides
almost infinite combinations of equalization, and compensation,
with separate bass and treble tone control cut and boost action. It
features five switch -selected inputs, three high -level inputs for 0.1
volts or higher at 0.5 megohm input impedance and two low -level
inputs, for 0.1 volts or lower for magnetic phono pickup or microphone. Each input has its own level control to eliminate blasting or
fading while switching through the various inputs, and will accommodate a record changer or player, tape recorder, AM -FM tuner, TV
receiver, or microphone, etc. Provision is also made for a tape recorder output, that is not affected by the volume or tone controls so
that the program material being recorded can be monitored without
affecting the recording. A special hum control is provided for absolute minimum hum level. The low impedance cathode -follower
output circuit allows complete installation flexibility, making the
WA -P2 ideally suited for "remote" installations as output lead
length is not critical.
The frequency response of this preamplifier is within t1% db
In
from 15 to 35,000 CPS. Equalization is provided for records through
separate turnover and rolloff switches for LP, RIAA, AES, and early
78's. The turnover switch produces the rising low- frequency characteristics required for proper equalization since record manufacturers deliberately limit the low frequency intensity to avoid cutting
into adjacent grooves. The rolloff control deemphasizes the high
frequencies, removing much of the noise and scratch through four
positions of 8, 12, 16 and flat position. Separate tone controls, provide 18 db boost and 12 db cut at 50 CPS on bass and 15 db boost and
20 db cut at 15,000 CPS on treble. Power requirements for the WAP2 are 6.3 volts AC at ampere, and 300 volts DC at 10 ma from the
basic amplifier with which it is used. Additional features include
tube shielding, plastic sealed capacitors, smooth acting controls,
good filtering, excellent decoupling, low hum and noise level, and
an all -steel cabinet.
The WA-P2 has been carefully pre- engineered for you to insure
specified high performance level. All components were'especially
selected for their high quality, and all values are clearly stamped
to avoid mistakes. The construction manual contains complete step by -step directions, with large pictorial diagrams that can be hung
over the work area for easy reference. Successful construction is
assured even for the beginner. Shpg. Wt. 7 lbs.
1
1
uJ
By Daystrom
HIGH FIDELITY
70 -Watt Amplifier KIT
FEATURES
Metered balance circuit -variable damping.
New silicon -diode rectifiers.
Excellent stability and power supply regulation.
Plenty of reserve power for program material that demands it.
X10995
MODEL
MODEL W -6: Consists of W -6M kit, plus WA -P2
pre -amplifier. Express only. Shpg. Wt. 59 lbs.
$12970
W -6M
SPECIFICATIONS
Power
Output..
70
Frequency Response at
1
Watt
±
Watts.
1
db 5CPS-80 KC with controlled rolloff above
100 KC.
Harmonic Distortion at
70 Watts
Intermodulation Distortion
at 70 Watts
Hum and Noise Level
70
Output
Tube Complement
The W -6M Amplifier with its many fine design features has been
enthusiastically accepted by the serious audiophile as one of the
finest units available on the market. The W -6M with 70 watts output
will give you truly fine performance at any power level and will drive
any of the finer speaker systems available today. It will also allow
you to obtain the full dynamic range of your favorite recordings or
tapes. The question has often been raised, "Why do need 70 watts ?"
A logical one since in many cases 10 watts may be adequate. The
answer is that the present upward trend in amplifier power is necessary to keep abreast of other recent advancements in the audio
art. As loudspeaker systems have been improved in bass response,
their efficiencies have, in general, been reduced; this means more
amplifier power for the same acoustic output from the speaker.
Another important factor is the ever-increasing dynamic range of
LP records and pre- recorded tapes, approaching that found in the
concert hall. Even though the full rated power output may be demanded only on the loudest musical passages and transients, it is
extremely important that the amplifier be capable of supplying the
reserve power with negligible harmonic and intermodulation distortion.
In the design of the W -6M silicon -diode rectifiers were selected
since they have no filament, to cause unnecessary heat, or burn
out. They are also noted for their very long life, and yet, are smaller
I
Below 1%, 60 and 6,000 CPS.
...88 db below full output.
Variable -0.5 to
Damping Factor
Input Voltage for
Below 2%, 20 to 20,000 CPS.
-10.
Watts
1
volt.
... 1- 12AU7,
1- 12AX7, 1- 12BH7,
2 -6550.
Output Transformer
Peerless -special design. Output taps at 4,
16 ohms, and 70 volts.
Dimensions
11-7/8' D.
x
9-1/16' H.
x
8
and
14-1/4' W.
than a house fuse. A heavy -duty transformer, with the latter, permits
extremely good power supply regulation. The output circuit employs 6550 tubes with special- design Peerless output transformer
for maximum stability at all power levels, and a variable damping
control for optimum performance with any speaker system. A
quick- change plug selects 4, 8, and 16 ohm or 70 volt output and the
correct feedback resistance. A built -in meter indicates when output
tubes are in proper balance, eliminating the need for an external
meter. This meter also provides a means of spot checking from time
to time to note condition of output tubes indicating whether or not
best possible performance is being obtained. Attractive shield prevents tube breakage and accidental burns. Top quality components
used throughout. Proper layout of chassis assures ease of assembly
(by eliminating those cramped and difficult places to get at). Fredb from 5 CPS to 80 kc with
quency response at 1 watt is within
controlled rolloff above 100 kc. Harmonic distortion is below 2% 20
to 20,000 CPS and IM distortion is below 1% 60 and 6,000 CPS at full
output assuring quiet performance. In addition to the fine specifications shown above, the W -6M is handsomely designed, making it a
pleasure to display. Components used in the W-6M have generous
safety margins so that they are operating well below their maximum ratings. Your assurance of years of dependable trouble free operation. Shipped express only. Shpg. Wt. 50 lbs.
tl
cc)
HEATHKIT
ä
By Daystrom
"LEGATO" HIGH FIDELITY
Speaker System KIT
FEATURES
Modern styling and rugged construction.
Theatre -type Altec- Lansing speakers and "C -P" (critical phasing).
M
MODEL HH -1-C
(Imported White Birch)
(African Mahogany)
HH-1-CM
$32500
Precisely balanced high and low frequency sound sources.
Living -presence sound reproduction.
Easy to build
SPECIFICATIONS
all components and instructions included.
Altec Lansing
HF Driver
Frequency Response
±
Cross-over Frequencies
500 cps.
Power Rating
50 watts program material.
Nominal Impedance....
16 OhmS.
Cabinet Type
Modified infinite baffle.
Cabinet Dimensions
41' long x 22 -3/4' deep x 34' high.
Speakers:
2
1
5
db, 25 to 20,000 cps.
-15'
Altec low frequency drivers.
frequency driver with special horn.
-Altec high
Magnet Weights
Low frequency drivers -2.4 pounds each.
High frequency driver -1.2 pounds.
Divider Network
M derived (M
= .6)- Parallel filter type.
Here, in the Legato Speaker System, is the nearest thing to perfection in reproduced sound. Realism so startling that if you were to
close your eyes, you would sense the actual presence of the artist
or orchestra in the same room with you.
There is no black magic, or "revolutionary" principle which achieves
this result. Perfect balance, critical phasing, adequate driver design
-all have been known to be required for true reproduction of sound.
But always, before the Legato, there have had to be compromises
in design. The Heath Company, working closely with Altec- Lansing
engineers, has permitted no compromises. We asked for the finest
speaker system it is possible to produce; and we got itl A system
"designed for listening" that satisfies even the most critical audio
requirements. The cabinet is a modified infinite baffle using two
15" Altec- Lansing low frequency drivers to cover frequencies from
25 to 500 CPS and a specially- designed sectoral exponential horn
with high frequency driver to cover frequencies from 500 to 20,000
CPS. The perfect balance of sound obtained from the Legato is
accomplished by proper phasing of the high and low frequency
drivers and using a carefully computed crossover network, with the
precise amount of phase shift to assure transition to the high frequency channel, which literally cannot be observed even on acoustic
measurements in one of the world's finest anechoic chambers. The
Legato covers frequencies from 20 to 500 cycles with a smoothness
of response which startles even experienced speaker engineers.
Above 500 cycles, a sectoral exponential horn driven by a specially
designed Altec- Lansing unit covers the tremendously important
Veneer- Surfaced
Plywood Cabinet,
%" Thick
Special Sectoral
Exponential Horn
Altec Lansing
Theatre -Type
Speakers
15"
3" Fiberglas
Insulation Inside
mid -range, the "presence" spectrum, and on up through the entire
audible range, with no disturbing discontinuities, mis- phasings, or
"beams" of highs. Internal reflections are absorbed by the splayed
back panel and a 3" layer of fiberglass lining. Two channels were
selected for this system rather than three, four, or more because
two channels, properly designed, were found to be superior. All the
outstanding features of the Heath Legato are inherent in the design
of the speakers and the enclosure and there are no critical adjustments for you to make. If you want the best, the Heath Legato is the
speaker system for youl
The "Legato" emphasizes simplicity of line and form to blend with
modern or traditional furnishings. Slim, tapered, struts project across
the grille cloth to produce a strikingly attractive shadowline. Supplied in African mahogany for dark finishes, or white birch for light
finishes.
No previous woodworking experience is necessary to assemble this
unit. All parts are ready for assembly, and no drilling, cutting, or
shaping is necessary. The pieces are simply assembled from step by -step instructions with plenty of large pictorial diagrams showing
exactly how the components fit together. The kit includes all hardware and materials necessary for assembly and the finished kit is
a sturdy, rugged unit that is most attractively styled. It can be finished to the taste of the builder. Everything is preplanned and predesigned so that the construction can proceed smoothly. Treat
yourself to the fun of "building your own" high fidelity speaker
system. Shpg. Wt. 195 lbs.
H
EAT H K T
N
it
By Daystrom
ADVANCED- DESIGN HI -FI
25 -Watt
El
cs
Amplifier KIT
at
FEATURES
Extra performance through special-design output transformer.
a
Full 25 watt output with KT66 tubes.
ca
Simplified balance circuit requires only voltmeter for adjustment.
03
Fine bass response, high frequency response, and phase shift characteristics. Reduced IM and harmonic distortion.
MODEL W -5: Consists of W -5M kit plus model
WA -P2 preamplifier. Express only. Shpg. Wt. 38 lbs.
$5975
MODEL
W -5M
$7950
SPECIFICATIONS
Power output.
25 watts.
Frequency Response
±
Harmonic Distortion
1% at 25 watts.
Intermodulation Distortion
1% at 20 watts (60 and 3,000 cps, 4:1)
Hum
99 db below 25 watts.
Damping Factor
40:1
Input voltage for
5 watts output
The W -5M Amplifier is considered top value in its power class by
leading independent research organizations. It incorporates all the
latest advance- design features for the super -critical listener. You
can enjoy virtually distortionless reproduction from one of the most
outstanding high fidelity amplifiers available today -at any price!
This amplifier employs a specially designed Peerless output transformer and uses KT66 tubes. Involving entirely new techniques in
transformer design, this Peerless unit prevents loss in frequency
response, especially at moderate volume levels, in addition to allowing increased power output. The circuit is rated at 25 watts, and will
follow instantaneous power peaks of a full orchestra up to 42 watts.
Featured also, is the "tweeter saver" which suppresses high frequency oscillation, and a new type balancing circuit. This is easier
to adjust, requiring only a voltmeter, and it results in a closer
"dynamic" balance between output tubes. Overall results are improved phase shift characteristics, reduced IM and harmonic distortion, and improved frequency response. With complete stability
under all dynamic operating conditions.
The frequency response of this amplifier is t1 db from 5 to
160,000 CPS at watt and within 2 db from 20 to 20,000 CPS at full
25 watts output. Harmonic distortion is 1% at 25 watts and inter modulation distortion is 1% at 20 watts (60 and 3,000 CPS, 4:1). Hum
and noise are 99 db below 25 watts for truly quiet performance. The
specifications above were taken with the most modern and accurate
test equipment available today. They are actual measurements
taken on a typical amplifier, under carefully controlled conditions,
1
1
1
db from 5 to 160,000 cps at
1
watt.
volt.
Tube Complement
2- 12AÚ7,
Output Transformer
Peerless, Special Design
2
-KT66, -5R4G Y.
1
Power Requirements
105-125 volts, 50/60 cycles, 140 watts.
Dimensions
13
3/32' wide
x8
1/2'
deep x 8 1/4e high.
not representing the most favorable operating conditions nor advertising information.
All connectors and terminals are located on one side of the chassis
apron for convenience. The circuit is fused, and two AC outlets are
provided for accessory equipment. One outlet is switch- operated
and can be used to automatically turn off record player motor when
amplifier is turned off. Provision is made for matching 4, 8 or 16 ohm
speakers at a terminal strip on the chassis. The chassis iS finished
in satin -gold enamel, and all terminals and tube sockets are marked
as to type and function. An attractive cover fits over all above chassis components. This not only "child- proofs" the unit, but it
results in a most attractive "finished" appearance. The bottom plate
also has large rubber feet to prevent marring of furniture. It is
suitable for use in or out of a cabinet. Rich black and gold color
styling harmonizes with the Heathkit model WA -P2 Preamplifier,
the Heathkit model FM -3A Tuner, and blends with any room decoration. Conservatively rated, high quality components are used
throughout to insure years of trouble -free performance. Its specifications, completely outlined above, clearly indicate the superiority
of this amplifier for the individual who wants "something special"
in top -quality audio. The construction manual is written so that no
technical background or training is required for assembly. Complete
step -by -step instructions are provided for every stage of construction, and large pictorial diagrams illustrate exactly where each wire
and component is to be placed. Shipped express only. Shipping
Weight 31 lbs.
co
HEATHKIT
By Daystrom
DUAL -CHASSIS HI -FI
20 Watt Amplifier KIT
FEATURES
Power supply and main amplifier on separate chassis for installation
flexibility.
Uses acrosound "ultra- linear" output transformer.
Williamson -type high fidelity circuit.
$497
5
Matches speaker of your choice; 4,
MODEL
8
or 16 ohms.
MODEL W -3A: Consists of W3 -AM kit plus model
WA -P2 pre -amplifier. Express only. Shpg. Wt. 37 lbs.
W3 -AM
$6950
SPECIFICATIONS
Power Output
20 watts.
Frequency Response
±1.5 db from
Harmonic Distortion
1% at 20 watts.
Intermodulation Distortion
1
Hum
85 db below 20 watts.
Damping Factor
I
n put
Voltage for
20 to 80 kc at
1
watt.
2% at 20 watts (60 and 6090 cps, 4:1.)
14:1
20
watt output
085 volts.
Tube Complement
2- 6SN7GT, 2 -5881,
Output Transformer
Acrosound type TO-300.
Power Requirements
105 -125 Volts 50/60 cycles, 120 watts.
Overall Dimensions (each unit)
7" high by 51/2° wide by 11" long.
1
-5V4G.
The model W -3AM amplifier offers complete flexibility in custom
installations. The power supply and amplifier stages are on separate chassis interconnected with a cable. These two units can
be mounted side by side or one above the other as desired.
Employing the Williamson -type high fidelity circuit the W3 -AM
features the famous acrosound TO -300 "ultra- linear" output transformer and 5881 tubes for broad frequency response, low distortion,
and low hum level. The result is exceptionally fine overall tone
quality. Frequency response is
1.5 db from 20 cycles to 80 kc at
watt output, with controlled rolloff above 80 kc to insure complete
t
1
stability at high frequencies. Harmonic distortion is less than 1%
and IM distortion is less than 1.2% at 20 watts. Hum and noise are
85 db below 20 watts. The output transformer has taps at 4, 8 or 16
ohms to match the speaker system of your choice. Top quality parts
are used throughout. No technical training or electronic background
is required to build one of these high fidelity units. You can experience the emotional impàct of true timber response, and you
have the additional satisfaction of having "built it yourself ". Assemble your own Williamson -type amplifier now for real listening
enjoyment. Shipped express only. Shpg. Wt. 29 lbs.
CONSULTATION DEPARTMENT
One of the "extras" you get when purchasing a Heathkit is the
availability of our consultation service. Should you require additional information regarding the construction or operation of your
kit, or regarding the selection of proper equipment, you can write
to the Heath Company for further assistance. Our factory trained
engineering consultants are specialists in their field and are thoroughly familiar with all Heathkit models and the applications to
which they are suited. No charge is made for this service and when
you write you will receive a prompt and personal reply. This extra
service is one of the reasons why there is such a great difference
between just any kit -and a Heathkitl
By Daystrom
SINGLE -CHASSIS HI -FI
20 Watt Amplifier KIT
FEATURES
True Williamson -type high fidelity circuit.
Special- design Chicago standard output transformer.
Transformer taps provide output impedance of 4, 8, or
16
ohms.
Rugged, heavy duty single chassis construction.
MODEL W -4A: consists of W4 -AM kit, plus model
WA -P2 preamplifier. Express only. Shpg. Wt. 35 lbs.
MODEL
W4 -AM
$5950
$3975
SPECIFICATIONS
Power output
Frequency Response
Harmonic Distortion
Intermedu lotion Distortion
Hum
Damping Factor
I
oitage for 30 watt output
Tube Complement
Output Transformer
Power Requirements
Dimensions
-
Why only dream about high fidelity and the pleasure it affords
why not actl Get the model W4 -AM Williamson -type amplifier which
continues to amaze audio -wise people with its outstanding performance. The Williamson -type circuit, features extended frequency
response, low distortion and low hum levels, this amplifier can
provide you with many hours of listening enjoyment with only a
minimum investment compared to other units on the market. It
employs 5881 push -pull output tubes and a special Chicago Standard
output transformer, designed to Heath Company specifications to
give you full fidelity at minimum cost. The use of this transformer
makes it possible to sell the amplifier at a bargain price, even though
its performance equals that of much more expensive units. Too,
some savings were realized by incorporating the power supply and
the main amplifier in a single chassis.
Just reed over the specifications for this fine high fidelity unit and
compare them to those for amplifiers costing many dollars more.
High fidelity is emphasized even though the price is unbelievably low.
Building a hi -fi system with Heathkit components is a lot of fun in
itself, in fact you may get so absorbed in the construction that you
lose all track of time and find yourself working into the wee hours of
the morning. But, it's worth it when you listen to the results of your
efforts after construction is completed. The construction manual is
complete in all respects, making the amplifier suitable for construction by the beginner in electronics. The only prerequisite is ability
to solder, and this can be taken care of with a little practice before
20 watts.
watt.
1 db from 10 to 100,000 cps at
5% at 20 watts.
2 7% at 20 watts (60 and 3,000 cps, 4:1).
95 db below 20 watts.
28.5:1.
2 volts.
2- 6SN70T, 2 -5881, -5V4ú.
±
1
1
1
Chicago Standard, Special Design.
105 -125 volts, 50/60 cycles, 115 watts.
151/4" by 8 %s" shelf space, 7" high
(allow 11/2" by 151/4" additional
shelf space for cables and connections).
assembly is started. Complete step -by -step instructions combined
with pictorial diagrams insure your success.
Another point worth considering is that Heathkit equipment is
compatible with most hi -fi accessory equipment on the market, such
as, turntables and various pickup cartridges, speakers, Tuners, etc.
You can select exactly whatever components fit your budget. Some
of this equipment you may already have available, requiring only a
good basic amplifier to give your system that quality touch. Frequency response extending from 10 CPS to 100,000 CPS within t1
db at watt assures you of full coverage of the entire audible range,
and clean clear sound amplification takes place in circuits that hold
harmonic distortion at 1.5% and IM distortion below 2.7% at full 20
watt output. Hum and noise are 95 db below full output. Taps on the
output transformer are at 4, 8 or 16 ohms to match the speaker system of your choice. Used with the Heathkit WA -P2 preamplifier, the
W4 -AM can be installed in an equipment cabinet or other suitable
location and be controlled remotely. All accessory equipment is
connected to the preamp which provides compensation, volume,
and tone controls for reproduction as you like it.
A high fidelity system in your home will provide you andyour family
with a great deal of enjoyment and also a form of relaxation after a
day at work or play. Don't deny yourself high fidelity because you
feel you can't afford it. Assemble the W4 -AM in just a few hours and
use it with the Heathkit model WA -P2 preamplifier for many pleasant
listening hours. Shipped express only. Shpg. Wt 28 lbs.
1
04,
HEATHKIT
By Daystrom
"BOOKSHELF"
12
Watt Amplifier KIT
FEATURES
than 1% distortion at full output over entire audio range
(20- 20KC). Amplifier conservatively rated at 12 watts.
Less
t
$2595
db at 12
Full -range frequency response 20- 20,000 CPS within
watts output.
Push -pull EL84 output tubes-special design output transformer.
MODEL
Built-in preamplifier
EA -2
AVAILABLE AFTER DEC.
I
-3 switch -selected inputs -RIAA equalization.
Luxury-styled cabinet in black and gold.
1, 1957
SPECIFICATIONS
Power Output
Overall Frequency
12
R
*1
at 12 Watts
Harmonic Distortion at
12 Watts
Intermodulation DI
ion
at 12 Watts
5% (4:1 ratio 60 & 6,000 CPS).
47 db below 12 watts, MAG phono.
1
60 db below 12 watts, AUX inputs.
Input Sensitivity for
12 Watts out:
Tuner
Tone Controls:
Bass (at 30 CPS)
Treble (at 15 ke)
Tube Complement
Power Supply
Power Requirements
Dimensions
Shipping Weight
db 20 to 20 kc.
1% or less ®12 watts 20 -20 kc.
Hum and Noise Level
Mag Phono
Crystal Phono
watts.
....
005 volts at 1,000 CPS.
.02 volts.
02 volts.
15 db boost 17 db cut.
15 db boost 20 db cut.
1- 12AX7, 1-604, 1 -6AN8,
2-ELM, 1-EZ81.
Transformer operated.
117V, 60 cycle AC, 100 watts.
12%` W. x 8% D. x 4%' H.
15 pounds.
Here is a strikingly attractive 12 -watt hi -fi amplifier that you will
want for your living room or den. Its good looks and compact dimensions make it suitable for use in the open on a bookcase, or on an
end table. Tubes, transformers, and the circuit components are out
of sight, within its attractively styled cabinet -and all operating
controls are conveniently located on the front panel. But, this eye pleasing style and color are not the whole story. You get many
hidden "extras" in circuit design, which are normally taken for
granted, but which have everything to do with the high quality of
sound reproduction obtained.
This amplifier takes advantage of the most recent developments
in the audio art to give you full range frequency response from 20 to
20,000 CPS within t1 db. Harmonic distortion is less than 1% at full
12 watts output over the entire range (20- 20,000 CPS). Intermodulation distortion is less than 1.5% at 12 watts, with low hum and noise.
The advanced circuitry incorporated uses miniature tubes
throughout including EL84 output tubes in a push -pull tapped screen output circuit using a special design output transformer.
The output transformer is tapped at 4, 8 and 16 ohms to match
almost any speaker system.
The model EA -2 has its own built -in preamplifier with provision
for three separate inputs, MAG phono, crystal phono, and tuner.
The MAG phono input features RIAA equalization and crystal phono
input impedance is 2.2 megohm to meet the rating recommended
by most cartridge manufacturers. Separate bass and treble tone
controls are provided with boost and cut action. A special hum balance control is also provided to insure quiet operation.
Construction of the EA -2 is simplified through the flat chassis
layout which eliminates those cramped and difficult places to get
at. The instruction manual supplied has plenty of pictorial diagrams
in addition to the step -by -step instructions which tell you exactly
where each and every part goes. Parts are clearly marked so that
they are easily identified.
The cabinet shell is well ventilated to allow cooling and is constructed of vinyl plastic bonded to steel which is practically indestructible. It resists scuffing, wear, and abrasion. Resists chemicals
so it won't stain. Heat or flame will not cause it to blister or peel.
Wipes clean in seconds with a damp cloth. The bond will not loosen
even under extreme pressure, The vinyl coating has a smooth
leather texture in black with tiny flecks of inlaid gold to add an extra
luxury touch. The front panel features brushed -gold trim and buff
knobs with gold inserts. Control and function are clearly indicated
with gold lettering. An amber neon pilot lamp is also provided to
indicate when the amplifier is on.
Design of the amplifier also allows mounting in an equipment
cabinet if desired. A full size template is supplied.
In all, here is an amplifier that not only looks good but has built -in
performance comparable to amplifiers costing many times more. It
is an amplifier that you and your family will be proud to own and use.
Shpg. Wt. 15 lbs.
At
H EAT H K I T
By Daystrom
Audio Generator KIT
FEATURES
Continuous coverage, any frequency between 20 CPS and MC.
Output voltage controlled with step and variable attenuators.
I
Precision resistors in frequency determining network.
MODEL
Cathode follower output for stability and low impedance.
Well regulated output with very low distortion.
AG -8
$2950
SPECIFICATIONS
Frequency
20 cps to
Output
10 volts (no load)
-3
Impedance
1
mc in
5
db at 600 kc;
ranges.
t
1
db 20 cps-400 kc
-8 db at
1
mc.
600 ohm output.
Distortion......
..
Less than 0.4%, 100 cps through audible range.
Power
105 -125 volts AC, 50-60 cycles, 30 watts.
Dimensions
7W. high, 131" wide, 71" deep.
1110
High fidelity fans and service technicians will welcome this low -cost,
highly- efficient audio generator kit, for evaluating and servicing
audio amplifiers. Its constant output voltage and wide frequency
range are mighty important when plotting audio response curves.
Continuous frequency coverage from 20 CPS to mc is available in
five ranges. Tuning is greatly simplified by means of a five -position
range switch and a fine adjustment to the panel scale markings.
Output voltage is controlled with a step -type attenuator and a continuously variable control. Maximum output impedance is 600 ohms,
and overall distortion is less than .4 of 1% from 100 CPS through the
1
HEATHKIT
audible range. Up to 10 volts of audio output is available, under noload conditions. Output remains constant within t1 db from 20
CPS to 400 kc. The power supply is transformer operated with well
regulated output and low distortion. Precision resistors are used in
the frequency determining network for accuracy. The model AG -8
can be built in a very few hours by following the clearly designed instructions. After construction, the generator is easily calibrated using only a VTVM or any reasonably high impedance AC voltmeter.
Full instructions are provided for the use of the 60 cycle AC line as
an accurate frequency source. Shpg. Wt. 11 lbs.
HEATHKIT SQUARE WAVE
Audio Oscillator KIT Generator KIT
(Sine and Square Wave)
The AO -1 Audio Oscillator features
either sine wave or square wave output, with audio frequency coverage
of 20 CPS to 20,000 CPS in three
ranges. Thermister regulation is
The model SQ -1 Square Wave Generator provides an excellent method
provided for linear output throughout the frequency range. AF output
MODEL AO -1
is at low impedance, with low distortion. Good sine waves, and clean
square waves with a rise time of
only 2 microseconds are available to
be used in a great variety of applications. Output voltage is 10
volts no -load, t1 db. Distortion is less than 0.6% from 100 CPS
through the audible range. Cabinet measures 7%" H. x 131/4" W. x
7%" D. A very valuable instrument for audio experimentation and
development work. Shpg. Wt. 10 lbs.
$24so
for studying amplifier distortion,
high and low frequency response,
phase shift characteristics, and
transient response. Features wide
frequency range, good square wave
MODEL SQ-1
output and high output voltage at
low impedance. Output frequency
is variable from 10 CPS to 100 kc in
four ranges, and the output voltage
level is variable from 0 to 20 volts. A cathode follower output is
used for isolation. Cabinet measures 12%" L. x 7" H. x 7%" D.
Designed for ease of assembly and will provide many years of
reliable service. An outstanding instrument at this low price.
$29so
Shpg. Wt.
12
lbs.
HEAT H K IT
By Daystrom
Audio Analyzer KIT
FEATURES
Combines function of AC -VTVM, wattmeter, and IM analyzer
compact unit.
In one
High and low frequency oscillators built -in for IM tests.
X499
5
Built in load resistors of 4, 8, 16 and 600 ohms.
MODEL
Large easy -to -read meter-flexible switching system simplifies operation.
AA -1
Tremendous savings over purchase of
3
separate instruments.
SPECIFICATIONS
Frequency Response:
AC VTVM
Wattmeter
Analyzer High Pass Filter
IM Analyzer Low Pass Filter.
I
M
t*
... 10 cycles
1 db.
to 100 kc
1
10 cycles to 50 kc
db.
2000 cps to 12000 cps.
10 cps to 600 cps
Range:
AC VTVM
DBM..
0 01, 0.03, 0.1, 0.3, 1, 3, 10, 30, 100, 300 V.
..
...
Wattmeter
IM Analyzer
Input Impedance:
AC VTVM
I M Analyzer
Wattmeter
full scale.
-40, -30, -20, -10,
RMS
+10, +20, +30, +40,
to +52 DBM.
0,
+50. Reads from -65
.15 mw, 1.5 mw, 15mw,150 mw,1.5w, 15w, 150w
full scale. Maximum continuous power 25 watts,
intermittent power to 50 watts.
1 %, 3 %, 10%, 30%, 100% full scale.
megohm or 4, 8, 16 or 600 ohms switch selected.
megohm or 4, 8, 16, or 600 ohms, switch selected.
4, 8, 16 or 600 ohms internal load, 10,000 ohms
across ext. load.
1
1
Output Impedance:
Low and High Frequency
Output
3000 ohms. (600 ohms when shunted with a 750
ohm resistor).
Internal Generator
Frequencies:
Low Frequency
High Frequency
60 cycles.
Approximately
6
kc.
Accuracy:
AC VTVM and Wattmeter
IM Analyzer
Within 5% of full scale.
Within 10% of full scale.
Power Requirements
105 -125 VAC, 50 -60 cycles, 20 watts.
Dimensions
13' wide x 81/2' high
Net Weight
9 lbs.
Shipping Weight
13 lbs.
x
7' deep.
The model AA -1 Audio Analyzer is almost a complete laboratory in
itself, in that it combines the function of an AC VTVM, a wattmeter,
and an IM analyzer. Combining these instruments into one compact
package allows making a very thorough analysis of audio equipment without the necessity of cluttering the work bench with various
instruments and sometimes a bewildering number of test leads.
Power output, noise, gain, overload and intermodulation characteristics can be determined quickly and accurately using the two sets
of test leads furnished and the flexible switching system incorporated in the analyzer. Non -inductive load impedances of 4, 8, 16 and
600 ohms are built -in and are switch -selected for the desired resistance. A high impedance position is also provided for stage -tostage and other high impedance circuit analysis.
Unique circuitry is used in the AC VTVM portion of this instrument
to secure improved performance. Employs a cascode type input
stage for high gain at low noise levels, thus improving meter accuracy at all voltage readings. The VTVM circuit can be used for
measuring noise, frequency response, output, gain, power supply
ripple, etc. The built -in wattmeter allows simple measurement of
power output with either internal or external loads. DBM scales are
also provided so that the db gain or loss may be noted quickly.
Circuit and meter ballistics are such that the instrument makes an
excellent level monitor for recording and program feed purposes.
High and low frequency generators for IM measurements are built
in so that no additional equipment is necessary for intermodulation
distortion testing. IM tests may be made at the amplifier output, or
at individual high impedance stages.
All basic operations of the instrument can be accomplished by
connecting the ouput leads to an amplifier input, and the input leads
to the amplifier output, and rotating the function selector switch
through all of the available positions. A glance at the specifications
will quickly show the many functions and features available. The
tremendous popularity of this instrument has made a price reduction of almost ten dollars possible, on top of the substantial saving
over the purchase of three separate instruments.
The careful design of this instrument allows a maximum in performance, flexibility and utility. High quality components are clearly
marked for easy identification. The instruction manual contains a
complete circuit description plus information on its use and applications. The AA -1 is attractively styled with all functions of the controls clearly indicated. If you are active in the design or repair of
audio equipment you will find the AA -1 a welcome friend indeed.
Shpg. Wt. 13 lbs.
s
H E AT H K 1 T
By Daystrom
Audio Generator KIT
FEATURES
Output and frequency indicators accurate to within
5%.
Built -in 600 ohm load, switch selected.
All frequencies tuned by switch method
-
no human tuning error to
$3450
consider.
MODEL
200 microampere meter calibrated in volts RMS and DB.
AG -9A
Attenuation both continuous and in calibrated steps.
SPECIFICATIONS
Frequency
10 cps to 100 kc, switch selected, 2 significant
figures and multiplier.
Output
6 ranges 0 -.003, .01, .03, .1, .3,
1 volts RMS into
external 600 ohm load or with internal load into
Hi -Z.
ranges0-3, 10 volts RMS into a minimum of
10,000ohms
60 db to +22 db ,n 8 steps.
-
2
-60 dbm to +2 dbm
Distortion
:.
,
I
:
I'
Attention hi -fi perfectionists! This is what you've been looking for;
a small, compact audio generator that produces a near perfect sine
wave with close frequency control and metered output voltage.
The model AG-9A provides quick and accurate selection of low distortion signals throughout the audio range. Three rotary switches
select iwo significant figures and a multiplier to determine audio
frequency. Switch selection of frequencies allows return to the exact
frequency previously measured, without error as might be encountered with continuously variable tuning. Frequency can be varied in
increments of CPS from 10 to 100 CPS. A four -position multiplier
1
.
Less than
(O dbm
.1'; 20-20,000
=1 MW
600 ohms).
cps.
Tubes.
1-
Power
105-125 volts AC, 50-60 cycles, 40 watts.
Dimensions
91"
6AU6,
1
6CL6,
1
-6X4.
wide, 61/2" high, 5" deep.
switch increases this range in multiples of 10, thus providing the
overall range of 10 to 100,000 CPS. The attenuator system operates
in sets of 10 db and is also calibrated in 8 full scale meter ranges of
0 -.003, .01, .03, .1, .3, 1, 3, and 10 volts RMS. Output is irdicated on a
large 4%" panel meter calibrated in volts and decibels. Output and
5%. Distortion is acfrequency indicators are accurate to within
tually less than .1 of 1% between 20 and 20,000 CPS. With the AG -9A
as a signal source you can forget about unknown input variations
and distortion when working with audio circuits. Use it with the HD -1
kit to check harmonic distortion. Shpg. Wt. 8 lbs.
HEATHKIT
Harmonic Distortion Meter
MODEL
HD -1
$4950
KIT
The Heathkit Harmonic Distortion Meter, model HD -1 will prove invaluable in the designing and
servicing of audio circuits. Used with an audio signal generator, the HD -1 will accurately measure
harmonic distortion at any or all frequencies between 20 and 20,000 CPS. Distortion is read directly
from the panel meter in ranges of 0.1, 3, 10, 30 and 100% full scale. Full scale voltage ranges of 0-1,
3, 10 and 30 volts are provided for the initial reference settings. Signal -to -noise ratio measurements
are also permitted through the use of a separate meter scale calibrated in db.
The HD -1 kit features top -quality components throughout. High input impedance (300,000 ohms)
and 1% precision resistors in the VTVM voltage divider circuit assure excellent sensitivity and
accuracy. In spite of the lab type circuit involved, the Heathkit Harmonic Distortion Meter is quite
simple to construct and use. Measures 13" W x 8%" H x 7" D. This kit is complete in all respects.
After construction it will prove its worth by long years of outstanding service. Shpg. Wt. 13 lbs.
HEATHKIT
By Daystrom
Audio VTVM KIT
FEATURES
Essentially flat response from
IO
CPS to 400,000 CPS.
Precision 1% voltage divider resistors.
Large, easy -to -read 4%" 200 UA meter.
Measures AC signals from
MODEL
AV -3
SPECIFICATIONS
Frequency Response
Sensitivity
Range
Input Impedance
Accuracy
Multipliers
Meter...
Tube Complement
Power Supply
Power requirements
Dimensions
Net Weight
Shipping Weight
I
MV to 300 V at high impedance.
Stable, reliable performance in all applications.
t millivolts full
1 db 10 CPS to 400 kc.
scale (lowest range).
volts 0.01, 0.03, 0.1, 0.3, 1, 3, 10, 30, 100, 300,
volta, RMS, full scale. decibels total range
-52 db to +52 db, scale -12 to +2 db (1 mw
-600 ohm) ten switch selected ranges from
-40 to +50 db.
10
1
megohm at
1
kc.
within 5% of full scale.
1% precision type.
41/2" streamlined case with 200 microampere
movement.
2- 12AT7, 1 -6C4.
Selenium rectifier with resistance -capacitance
filter.
105 -125V AC, 50-60 cycles, 10 watts.
7%" high x
31/2 Lbs.
411%6"
wide
x
T` Ta
4%" deep.
0.
5 Lbs.
The model AV -3 AC Vacuum Tube Voltmeter was designed especially for audio measurements, and for use in making low -level AC
measurements in power supplyfilters, etc. This voltmeter emphasizes
stability, broad frequency response, and sensitivity. It employs a
tried and proven circuit featuring a cascode amplifier with cathode follower isolation between the input and the amplifier, and between
the output stage and the preceding stages. An extremely stable
circuit with high input impedance (1 megohm at 1000 CPS). The
frequency response of the model AV -3 is essentially flat from 10 CPS
to 400 kc, and is usable for tests well beyond these frequency limits.
Features large, easy -to -read 4%" 200 ua meter. Increased damping
circuit stabilizes the meter for low frequency tests.
Nylon insulating bushings at the input terminals reduce leakage
and permit the use of the convenient five -way Heath binding post.
The extremely wide voltage range covered by the AV -3 makes it
especially valuable not only in high fidelity service, but also in experimental laboratories. AC (RMS) voltage ranges are 0 -.01, .03, .1,
.3, 1, 3, 10, 30, 100 and 300 volts. Db ranges cover -52 db to +52 db.
1% precision resistors are used for maximum accuracy. The neat,
compact, circuit layout assures ease of assembly. The AV -3 is most
attractive in appearance and is a pleasure to use with stable, reliable performance in all applications. Shpg. Wt. 5 lbs.
in the meter
vor
HEATHKIT
Audio Wattmeter KIT
The AW -1 Audio Wattmeter can be used in any application where audio power output is to be measured.
External or internal load resistors are selected with
convenient front panel switch. Non- inductive load
resistors are built in for 4, 8, 16 or 600 ohms impedance. Five power ranges cover 0 -5 mw, 50 mw, 500
mw, 5 w and 50 w full scale. Five switch -selected db
ranges cover -10 db to +30 db. All indications are
read directly on the large 4X'200 microampere meter.
Frequency response is +1 db from 10 CPS to 250 kc.
Precision multiplier resistors are used for high accuracy, and crystal diode bridge for wide -range frequency response. Uses a 12AU7 voltage and current
amplifier for meter, and is operated from a transformer -type power supply. Measures 7%" H. x 4%"
W. x 4%" D. Operates from 105 -125 V. AC, 50 -60 cycle
power. A fine meter to help supply the answers to
your audio operating or power output problems. Also
features modern physical styling and convenient
functional front panel design. Shpg. Wt. 6 lbs.
MODEL
AW -1
$2950
r
By Daystrom
SINE - SAUARE
Generator KIT
FEATURES
Sine and square wave output available simultaneously at separate
terminals.
Continuous coverage
waves.
t
1.5
db from 20 cps to
I
me on both sine and square
MODEL
Low distortion. (less than .25%)-square wave rise time .15 microseconds.
Constant output impedance at all settings
10 V
of
output controls (except
AG -10
in
ranges).
$4996
SPECIFICATIONS
Sine Wave:
Frequency Range
20 cycles -1 MC
0 -10 volts, 0 -1 volt, 0 -.1 volt, 0-.01 volt into
Impedance Load
Output Volts (R.M.S.)
Source Impedance
(*
10 %)
Distortion
Frequency Response
Square Wave:
Frequency R
10 volt range -O to 3.5
kohm; 1 V,
range -600 ohm
less than .25% 20 to 20,000 cycles
±1.5 db 20 cycles tat megacycle
High
V, and M1 V
20 cycles -1 MC
Output Volts (P. to P.)
%
0 -10
volt, 0-1 volt, 0-.1 volt, into
Load
O to 220 ohm
Source Impedance (= 10 %)
10 volt range
-52 ohm
Rise Time
less than .15 micro- second
General:
Frequency Accuracy
Power Requirements
Dimensions
The AG -10 is one of the newest generator additions to the Heath
line. It is a general purpose lab instrument, featuring wide range,
high quality, sine and square waves, for a great variety of applications. Some of these are; radio and TV repair work, checking scope
performance, as a variable trigger source for telemetering and pulse
work, and checking audio, video and hi -fi amplifier response.
The frequency response of the AG -10 is *1.5 db from 20 CPS to
1 MC on both sine and square waves, with less than .25% sine wave
distortion, 20 to 20,000 CPS. The sine wave output impedance is 600
ohms at all settings of the output controls (except in 10 volt range).
The square wave output impedance is 50 ohms at all settings (except
in 10 volt range). Square wave rise time is less than .15 microseconds.
An added feature of this generator is the addition of a control in
the oscillator circuits to adjust for differences in tube characteristics
assuring absolute minimum distortion. A new and more exact frequency calibrating system is employed to insure proper tracking
across the dial. The wide frequency range and high quality waveforms will make this instrument extremely useful in general laboratory use as well as in audio, television, and high fidelity applications.
Separate output terminals are provided for sine and square wave
output so that both the sine and square waves can be used at the
same time with no detrimental effects to either waveform. In making
stage -gain measurements, the sine wave output can be connected
to the input of a stage to be measured, and the square wave output
connected to the external sync terminal of an oscilloscope. By using
this method of sync, measurements can be made all the way through
.1
a
1
a
High Impedance
V, and
.1
V ranges
± 5%
105-125 V.A.C., 50-60 cycles 55 watts
13' wide x 81/2' high x 7' deep
number of amplifier stages without having to readjust the oscilloscope synchronizing controls.
Features include a five -position band switch with steps of x 1, x 10,
x 100, x 1k, and x 10
continuously variable tuning- shielded
oscillator circuit -separate step and variable output attenuators in
ranges of 10, 1, and .1 volts for both sine and square wave, with
extra range of .01 volt on sine wave. Smooth acting controls eliminate
amplitude bounce.
The well -filtered power supply uses silicon -diode rectifiers and a
husky power transformer. An output cable is supplied with provisions for proper termination as outlined in the manual. All functions of the controls are clearly indicated on the attractively screened
front panel making operation of the controls self -explanatory. The
front panel controls are divided into three groups. On the extreme
left and right under the square wave and sine wave drawn on the
panel are the controls and output terminals for the square wave and
sine wave outputs. In the center are the frequency and frequency
multiplier controls common to both sine and square waves.
The interior layout was designed for maximum efficiency and ease
of construction. High quality components are used throughout and
are clearly marked for easy identification. The construction manual
supplied has detailed step -by -step Instructions, large pictorial diagrams and all other necessary information for successful assembly
with additional information on circuit description and use of the
completed instrument. We are sure you'll agree that its performance
is unmatched at this price level. Shpg. Wt. 12 lbs.
a
k-
Is
HEATNKIT
By Daystrom
"EXTRA DUTY"
Oscilloscope
5"
KIT
FEATURES
Full
5
MC bandwidth for color TV servicing.
Leath patented sweep circuit provides 20 to 500.000 CPS sweep
the range usually provided).
I
X6950
MODEL
2
O -11
(5
times
printed circuit boards for faster, easier assembly and stability.
Excellent linearity and sync stability -push-pull output
calibration reference
-
peak -to -peak
SPECIFICATIONS
Vertical Channel:
Sensitivity
Frequency Response.
Rise
..0.025 V (RMS) per inch at kc.
db from 8 cps to 2.5 mc.
db; 3 cps to 5 mc
1
... Flat within
Flat + 1.5 to
Time..
Overshoot..
Input Impedance
Hori
Channel:
Sensitivity
Frequency Response.
.
1
-5
Response at 3.58 mc -2.2 db.
0.08 microseconds or less.
10'; or less.
X1
21 mmf across 2.9 megohms, (1 kc
impedance, 2.7 megohms).
I
Input Impedance
0.6 V. (RMS) per inch at 1 kc.
Flat within
1
db 1 cps to 200 kc
Flat within
3 db 1 cps to 400 kc.
31 mmf across 30 megohms (1 kc impedance,
4.9 megohms,.
Sweep Generator:
Range
20 cps to 500 kc in, 5 steps:
20- 100 cps, 100 cps -1 kc, 1 kc
10 kc, 10 kc- 100 kc, 100 kc- 500 kc.
External positive or negative signal
-
Synchronizing
Tube Complement
-
internally, or'rom line.
..1 -5UP1, 1 6AB4,
6AN8,
1- 12BH7, 6DT6, 3 12AU7,
1
1
V2, 1- 6C4.
.. 105 - 125 volta, 50-60 cycles at 80 watts.
8'/s" wide x 141/4" high x 16' deep.
201 pounds.
.. 22 lbs.
1
Power Requirements.
Dimensions
Net Weight
Shipping Weight
6X4,
1
1
Here is our very finest scope! The advanced design and performance
characteristics of the 0 -11 make it a professional piece of equipment.
It features wide band amplifiers which are essential for color TV
servicing, and for critical observations in the electronic laboratory.
Vertical frequency response extends from 3 CPS to 5 MC plus 1.5 db
minus 5 db without extra switching. The response is down only 2.2
db at 3.58 MC. The sweep circuit functions effectively from 20 CPS
to better than 500 KC in five steps, utilizing the Heath patented sweep
circuit, which gives you five times the usual sweep obtained in other
scopes. Another extra, developed by Heath engineers, giving you
the latest in circuit design. Amazing linearity and lock -in characteristics enables viewing of a single wave, even at upper frequency
limits. Both vertical and horizontal output amplifiers are push -pull
and the scope incorporates a peak -to -peak calibrating source. The
input to the veritcal amplifier has a three -step frequency compen-
sated input attenuator. Numerous other features include plastic
molded capacitors in all coupling and bypass applications-pre formed and cabled wiring harness -low capacity nylon insulated
bushings for the vertical and horizontal input terminal posts, and
other top -quality parts throughout.
The 11 -tube circuit features a 5UP1 cathode ray tube, and provision is made for Z -axis input for intensity modulation of beam. The
extremely short retrace time and efficient blanking action provides
"picture book" display of essential TV wave forms. Positive trace
position controls with no bounce or overshoot. Frequency response
of the horizontal amplifier is within db from CPS to 200 KC and
down only 3 db at 400 KC. Horizontal sensitivity is 0.6 volts RMS per
inch. Construction is simplified through the use of two etched metal
circuit boards, and preformed, cabled wiring harness which imparts a professional appearance to the oscilloscope wiring. In
addition, use of etched circuits reduces assembly time, and provides a firm mounting for all standard components soldered to the
circuit board. Wiring errors are virtually eliminated since all parts
are mounted individually, with each space clearly marked. Etched
metal circuit boards permit stability levels difficult to obtain in conventionally wired circuits. Stray capacities and RF fields are safely
controlled to eliminate undesirable effects.
The construction manual features schematics and pictorial diagrams and complete step -by -step instructions plus large size pictorials which can be pinned up over your work bench for easy reference. In addition to being an outstanding performer, the model 0 -11
is the kind of professional -looking instrument you will be proud to
display on your workbench. The panel is charcoal gray in color,
with "high contrast" white lettering. The panel is readable even
under subdued lighting conditions often required for oscilloscope
operation. Test leads and a calibrated grid screen are provided with
kit. Heath know -how in producing kit -form instruments assures you
of the best dollar value in performance. Shpg. Wt. 22 lbs.
1
1
H
EAT H K I T
By Daystrom
"GENERAL PURPOSE"
5"
Oscilloscope
KIT
FEATURES
Push -pull horizontal and vertical amplifiers.
Modern etched circuit design for stability.
Built -in IV peak -to -peak calibration reference.
MODEL
Full 5" cathode ray tube -Spot shape control.
0M-2
Easy to build from complete instructions supplied.
$42so
SPECIFICATIONS
Vertical:
Rise Time
Frequency Response
Sensitivity
Input Impedance
Horizontal:
Frequency Response
Sensitivity
Input Impedance
Tube Complement
Dimensions
Net Weight
Shipping Weight
1
HEATHKIT ETCHED CIRCUIT
SCOPE DEMODULATOR
Probe
NO. 337-C
1
kc.
18 lbs.
22 lbs.
push -pull types. This scope features a 5BP1 CRT, with provision for
external or internal sweep and sync, a built in IV peak -to -peak reference voltage for calibration purposes, and a calibrated grid screen.
The input to the vertical amplifier is through a three position step attenuated, frequency compensated circuit, allowing control of
signal levels applied to the amplifier. An adjustable astigmatism
(spot shape) control is provided to insure a sharp trace.
This scope is excellent for servicing, for use in the ham shack, or
for routine laboratory work. It is especially valuable for students, or
hobbyists. Designed to provide maximum performance at a minimum price, the model 0M -2 fulfills the need for a high -quality
general purpose instrument. In all, this oscilloscope incorporates
many "extras" definitely not expected at this price level. It's an
instrument you will be proud to own and use. Shpg. Wt. 22 lbs.
HEATHKIT LOW CAPACITY
Probe
KIT
$350
t
3 DB 2 cps to 425 kc.
6 DB 1 cps to 650 kc.
0 275 RMS volts per inch at
-
amplifier. Horizontal deflection amplifier.
1 -12BH7 vertical deflection amplifier.
1 -6BAS vertical cathode follower and
amplifier.
1 -12AX7 sweep multivibrator.
1 -6X4 low voltage rectifier.
1-1V2 high voltage rectifier.
105 -125 volts AC, 50/60 cycles, 65 watts.
834" wide x 1454s" high x 18" deep.
Power Requirements
0M -21
This fine scope features wide vertical amplifier frequency response, extended sweep generator operation, and improved stability.
The frequency response of the vertical amplifier has been extended
to within t3 db from 4 cps to 1.2 mc, or *6 db, from 3 cps to 2 mc.
Vertical sensitivity is.09 VRMS per inch at kc. The improved sweep
generator functions reliably from 20 cps to over 150 kc. Modern
etched circuit boards are featured in critical parts of the oscilloscope circuit. They not only permit a level of high stability but also
reduce assembly time considerably, Standard components are
mounted on these boards with each position clearly marked preventing wiring errors. Both vertical and horizontal amplifiers are
009 RMS volts per inch at 1 kc.
35 uufd shunting 1.5 megohms at X7.
25 uufd shunting 1.5 megohms at X10 & X100.
25 uufd shunting 10 megohms.
Multivibrator 20 cps to over 150 kc.
1 -5BP1 cathode ray tube.
2-12A1.17 horizontal cathode follower and
Sweep Generator
If you are looking for an "exceptional buy" in an oscilloscope for
general purpose applications, look at the features offered by the
0 25 microseconds.
= 3 DB 4 cps to 1.2 megacycle.
=6 DB 3 cps to 2 megacycle.
Extend the usefulness of your oscilloscope by observing modulation
envelope or RF or IF carriers in TV
and radio receivers. Functions like
AM detector to pass only modulation
of signal and not signal itself, Voltage limits are 30 V. RMS and 500
V. DC. Shipping Wt. lb.
1
KIT
Oscilloscope investigation of circuits encountered in television work requires the use of a
special low capacity probe to prevent loss of
gain, circuit loading or distortion. This probe
features a variable capacitor to provide correct
instrument impedance matching. Also, the
ratio of attenuation may be varied. Shipping
Wt.
1
lb.
NO. 342
$350
O
USE THIS HANDY ENVELOPE
WHEN ORDERING
Fold, enclose order blank with remittance
seal, stamp and mail.
FOLD
1
w
CC
w
0
o
HEATHKI'.
FOLD
Volt:
The model VC -3
wave signals of
the amplitude of
Employs preci:
)
TE,
i
E
.E
ó
;
coi
Ó
m
0n
um
°
-,,,
>
u
a)
O
yj
Ç Ñ
C
: VI
O
a)
a d
O
a)
vibrator circuit
U
1000 CPS. Outpu
0.3, 1,0, 3.0, 10,
N
o. w
provided so that
annoying lead ch
checking audio
valuable bench s
2
>
E
ÿ
I-° Vc
I
m
I-
0
Z
°c°
'>
v10í
CO
N
o Ñ V
y
¢
W
x
1C
a)
U
a1
a)
ó
>.
m
°
d
ÿ- w
Ú
a)
a,
a
>
t
O
T
C
á
1-
E
m
ó,
m
Ú
w
o
n
á
d
.L+
°
v óc
ac)
.°-'
a
a>i
3
cm
C-0
HEATH COMPANY
2
A
Subsidiary of Daystrom, inc.
CASH
LI
C. O. D.
BENTON HARBOR, MICHIGAN
PHONE
O
WALNUT
5
TIME PAY.
PLEASE PRINT OR WRITE NAME AND ADDRESS PLAINLY
RURAL ROUTE
BOX NO.
STREET
MAIL ZONE STATE
-
ADDRESS
O
CITY
SHIP TO ANOTHER ADDRESS? Give directions here.
STATE
TO SERVE YOU BETTER in the future, we would appreciate your answer ing the following questions:
OCCUPATION
NAME
Have you built other kits?
APPLICATION:
Radio /TV Service
Ill Hobby
Education Institution
Industrial U Other
SHIPPING ADDRESS
Yes
No
If yes, what kinds:
STATE
CITY
CHECK HOW YOU WANT
ORDER SHIPPED
Best
Way
Parcel Motor
Post Freight
Express
How did you first hear of
What new kits would you like Heath
HEATHKITS?
to bring out?
Ill Catalog
ON EXPRESS ORDERS If station Is in different town than your post office
address, show name of town where shipment should be sent:
TOWN
o
LAST ORDER
write your old address here:
CITY
ADDRESS
©
IF YOU HAVE MOVED SINCE YOUR
©
STREET
NAME
©
BLANK
-0051
Trade Show
Other
STATE
SECTION A
IF THIS IS YOUR FIRST ORDER TO US, please check here
QUANT.
MODEL
TIME PAYMENT ORDERS will
CASH ORDER
KIT DESCRIPTION
SEE REVERSE SIDE for time payment details.
be shipped only by Express
or Motor Freight.
PARCEL POST orders should include postage for weight
shown. Often orders for two or more kits can be shipped in a
larger single carton. On orders involving several kits, allow for a
few more pounds total shipping weight. Excess postage will be
promptly refunded.
EXPRESS and MOTOR FREIGHT ORDERS should not
include transportation charges -they will be collected at time of
delivery.
EACH
O
Total
amount
cash order.
Add 3% sates tax
on all deliveries In
the State of Mich.
TOTAL
SECTION B
á
0.J
a
t
TIME PAYMENT
PRICE
EACH
Cn
TOTAL
Total
amount
time pay order
O
Add 3% on total
order on all deliveries in Michigan.
Amount for parcel
post.
Do not remit for
express charges.
Amount due Heath
from previous order.
IMPORTANT. Please use a separate sheet for all correspondence. It will speed your order and assure a prompt reply to your
letter.
Magazine
Recommendation
TOTAL AMOUNT
Remitted.
Ship C.O.D.
TOTAL
DOWN PAYMENT
of
(at least
UNPAID BAL.
(total order less
down payment)
All nrices quoted are Net F.O.B. Benton Harbor. Michiaan.
All prices subject to change without notice.
Orders from FPO's, Canada and APO's must
by full payment including postage.
be accompanied
Time Payment Plan available in Continental United States and the Hawaiian
Islands only on orders having cash value of $90 or more. On Time Payment
Orders be sure to complete the Time Payment Plan Application on reverse side.
Heath's Easy Time Payment Plan
Time Payment Plan available only on orders having cash price of $90.00 or more.
Available in the Continental United States and the Hawaiian Islands only.
In order to assure prompt shipment of your new Heathkit under the
EASY PAYMENT CHART
Time Payment Plan, please observe the following instructions.
fill out section "B" of the Order Blank on the
OFirst
side of this sheet, designating the Heathkits you
reverse
wish to
buy. If your order totals $90.00 or more, you may use the
Time Payment Plan.
©
©
O
©
Up To
Insert the amount of your down payment in the Time
Payment Agreement below (at least 10% of your total
order). A larger down payment reduces carrying charge
and monthly payment.
Unpaid
Balance
Carrying
Charge
less than $50
$ 50.01 -60
$ 5
Refer to the amounts on the Easy Payment Chart which
correspond to the unpaid balance on your order (total
price of order less down payment). From this chart enter
your monthly payments on the Time Payment Agreement.
Sign your Time Payment Agreement in ink with your usual
signature, and fill in the credit statement completely.
Up To
Monthly
Payments*
Unpaid
Balance
12
$
Carrying
Charge
12
Monthly
Payments
5
$170.01 -180
$18
$17
6
6
180.01 -190
19
18
60.01 -70
7
7
190.01 -200
20
19
70.01 -80
8
8
200.01 -210
21
20
80.01 -90
9
9
210.01 -220
22
21
90.01.100
10
10
220.01 -230
23
22
100.01 -110
11
11
230.01 -240
24
22
110.01-120
12
11
240.01 -250
25
23
120.01 -130
13
12
250.01 -260
26
24
130.01 -140
14
13
260.01 -270
27
25
140.01 -150
15
14
270.01 -280
28
26
150.01 -160
16
15
280.01 -290
29
27
160.01 -170
17
16
290.01 -300
30
28
AII
monthly payments are for amount shown except for last
payment which is for the odd amount remaining due.
Send this application and your down payment to Heath
Company, Benton Harbor, Michigan.
WRITE FOR FURTHER INFORMATION IF YOU WISH TO ADD ON TO YOUR PRESENT ACCOUNT
TIME PAYMENT AGREEMENT
Please answer all questions fully to help establish your credit promptly. Write your order on the reverse side.
NOTE: Time payment agreement cannot be accepted from persons under 21 years of age. If you are under 21, have this form filled out by a person
of legal age, regularly employed or engaged in business. He can make the purchase for you, and will be responsible for payment.
TO: HEATH COMPANY BENTON HARBOR, MICHIGAN
Enclosed is a deposit of $
on the Easy Payment cost of the equipment on the reverse side. will pay $
each month to you at the above address starting 30 days after shipment, until the total time payment price is paid.
Title to and right of possession of said equipment shall remain with you until all payments have been made. Upon default on any payment due on
this contract, the full amount unpaid hereon, at your option, shall become immediately due and payable and you may either hold me liable for said
amount or repossess the equipment. If you shall repossess, all payments made may be retained as rent for the use and depreciation of said equipment.
The loss, injury or destruction of the equipment after have received it shall not operate as payment or in any manner release me from any obligation
hereunder.
If this order is not accepted, you shall refund the down payment with notice of non -acceptance. Acceptance shall be effected when the equipment
designated on the reverse side hereof is shipped to me. certify that all statements in the Credit Statement set forth below are true and complete and
are made for the purpose of obtaining credit. This contract is to be governed by the laws of the State of Michigan.
I
I
I
Enter Date
Sign Here
CREDIT STATEMENT
(IMPORTANT: Please fill in completely. Omissions and errors cause delays.)
Military
FULL NAME
-
(Print)
WIFE'S
_
_
NAME_
Serial No
(if serviceman)
Age
_
No of Children and names
(Print)
City
Residence
Own or Buying
Rent
Live with Parents
Landlords Name f If Owned
lMtg. Held By 1
and Address
Previous
Address
(If less than 3 years at present address)
No. of Rooms
How Long
State
Paid Monthly $
Phone No
Previous
Address
How Long
How Long
Previous
Landlord
Address
Business
Phone No
_Address
Employed by
Position
Previous
Employer --
Dept or
Badge No
How Long
Salary
Address
(If
$
How Long
less than 3 years at present employment)
Wife's
Employer
Address
CREDIT REFERENCE (Give Your Bank and
2
Phone
Dept. or
Badge No
How Long
Position
Other IncomeGive Details
Salary $
Total
Family Income
$
Merchants, Firms or Finance Companies with whom you do or have done business.)
Your Bank
Type of
Account
Address
First Credit
Reference
Address
Second Credit
Reference
Address
Nearest Relative
Present
Balance $
Present
Balance $
Address
(Do not list those with whom you are living)
Monthly
Payment
$
Monthly
Payment
Relationship
$
6
4 ----
1-EATHK IT
By Daystrom
TV ALIGNMENT
Generator KIT
FEATURES
Oscillator covers 3.6 mc to 220 mc entirely on fundamentals -complete
FM and TV coverage.
Center -sweep circ-iit swings up to 20 mc each side of center depending
on frequency.
Maximum RF output well over
.1
volt.
All- electronic sweep -no moving parts or mechanical vibration.
MODEL
TS -4A
Built -in crystal marker oscillator and variable marker oscillator.
Crystal supplied with kit.
$4950
SPECIFICATIONS
Frequency (MC)
Band
"A"
"B"
"C"
"D"
3.6to10
Output V (RMS)
0.23
0.22
Flat Within
t%
*%
4
db
db
db
0.08
*1/2 db
(Measured with H -P 410B High Frequency VTVM without compensation for pulse nature
of output, and for worst db deviation on each band at a fixed center frequency).
Output Impedance
50 ohms, terminated at both ends of cable.
Sweep Deviation
Continuously variable from 0 -4 mc lowest max.
deviation 0 -42 mc highest max. deviation (depending on base frequency).
10 to 26
30 to 80
80 to 220
Markers:
Crystal
Variable
External
Attenuators
Blanking
Tube Complement
Cables
Power Requirements
Dimensions
Shipping Weight
Many special design features have been combined in the TS -4A
Sweep Generator to make this instrument easy to operate and as reliable as possible. An entirely new type of sweep system is used,
which provides electronically controlled center sweep on fundamentals throughout the entire range of the instrument. Fundamental
output is used in the range of 3.6 mc, to 220 mc, and there is plenty
of output to align any type of circuit that may be encountered, hot
or cold. The marker and sweep oscillators are well shielded and
isolated from each other to prevent internal interference. A new
type of regulated power supply is used, providing much improved
output amplitude regulation. Marker accuracy is assured, since
it is calibrated against a 4.5 mc crystal, furnished with the kit. This
crystal also provides an accurate marker or signal for alignment of
sound IF strips in intercarrier type sets, as well as 4.5 mc spaced
markers for bandwidth identification.
The electronic sweep circuit has nothing to wear out or cause
trouble since no moving parts or vacuum tubes are used. The heart
of the system is a controllable inductor, which varies frequency by
magnetic means. Not only is this device trouble -free and consistent in performance, it also requires very little power to provide wide
range sweeps with excellent linearity. No "hot" controls or tubes
to worry about,
The oscillator circuit provides frequency coverage from 3.6 mc to
220 mc in four ranges, including the FM spectrum. Sweep deviation
is smoothly controllable from 0 up to as high as 42 mc, depending
on frequency. Fundamentals are used throughout the entire range,
eliminating spurious beats and parasitics that are so often troublesome in beat frequency type sweep generators. The use of funda-
0.11
multiples thereof (included in kit).
19 mc to 60 mc fúndamentals, 57 mc to 180 mc on
4 5 mc and
harmonics.
Panel terminals provided for external marker.
Step -switch controls sweep oscillator and marker
oscillator together, plus separate variable controls
provided for each output.
Effective two -way blanking elliminates return
trace. Phasing control also available.
6B07A Sweep osc. and buffer,12AT7 variable and
crystal marker osc., 12AX7 blanking and AGC
amplifier, 6CL6 shunt. regulator, 6X4 rectifier.
3 supplied: output, scope horizontal and scope
vertical.
110V AC, 50 -60 cycles. 50 watts.
13' wide x 81/2' high x 7' deep.
16 pounds.
mentais also gives much more output at all frequencies, up to .23
volts RMS on the lower band, and .08 volts RMS at 220 mc. Alignment
of tuners, IF strips, boosters, etc. is made easy due to this high
output. Cold alignment of tuned circuits, filters and ''raps is also
made possible by the TS -4A, used with a demodulator probe.
Fundamental operation allows smooth control of signal output so
that high gain stages can be aligned without danger of overloading.
Blanking is used to eliminate the return trace and provide a base
reference,
The time tested and proven Heathkit step -by -step instruction
procedure is employed in the construction manual, along with
sections pertaining to circuit description, theory of operation and
applications. Detailed information regarding various procedures
used in actual alignment work is also supplied. Alignment problems
are shown and carried through using the sweep generator and an
oscilloscope, and further mention is made of further equipment
such as RF signal generators, grid dippers, etc. The construction
manual fulfills two requirements, a complete construction assembly
and service manual, as well as an alignment procedure and service
technique reference. Many operational features make the new
TS -4A sweep generator unique in the service field. The built -in
crystal and variable markers afford a degree of flexibility rarely
obtainable in any instrument designed specifically for servicemen.
Ease of operation is enhanced by the new type of center sweep
system, for it is only necessary to set the dial to the appropriate
frequency and turn up the sweep dial to obtain a trace. A truly
outstanding number of features at a tremendous price saving!
Shpg. Wt. 16 lbs.
HEATH K I T
By Daystrom
COLOR BAR AND DOT
Generator KIT
FEATURES
All frequencies crystal controlled for steady locked -in patterns. (No
external sync lead required.)
New shading bar pattern for screen and background adjustment.
10- vertical
$599
5
MODEL
CD -1
color bars.
Choice of six different patterns.
RF and video output with separate level controls.
Crystal controlled sound carrier with off -on switch.
SPECIFICATIONS
RF
Output Frequency Range
Sound Carrier
Video Output
Modulation
Tube Complement
Power Requirements
Dimensions
Shipping Weight
TV channels 2 through 6. Output voltage variable
from 100 to 100,000 microvolts.
Crystal controlled unmodulated. 4.5 MC away
from picture carrier. Off-on switch provided.
Positive or negative output variable from 0-10
volts peak -to -peak open circuit. Source impedance
approx. 1,000 ohms.
White dot pattern, crosshatch pattern, horizontal
bars, vertical bars, 10 vertical color bars, shading
bar pattern.
12AT7,
12AU7, 1 -6807,1 -6CS6, 1 -062.
117 volts AC, 50-60 cycles, 70 watts.
13' W. x 8W H. X 7' D.
12 lbs.
6-
4-
tit:>rst:>is>t:ts>isfitis
Technicians by constructing the CD -1 will not only own a time and
labor saving instrument, but will also gain added knowledge of a
new and profitable field.
The CD -1 combines two basic units, the color bar generator and
white dot generator in one versatile portable instrument, which has
crystal controlled accuracy and stability, and yet the cost is within
most technicians budget. Produces white dot pattern, crosshatch,
horizontal or vertical bar patterns, 10 color bars and a new shading
bar pattern.
Ten vertical color bars are produced using the crystal controlled,
off -set carrier method, giving the following colors from left to right
when the hue control of the color set is in the center of its range.
1. yellow- orange, 2. orange, 3. red, 4. magenta, 5. reddish -blue,
6. blue, 7. greenish -blue, 8. cyan, 9. bluish -green, 10, green. Using
these bars, A.F.C., phase and matrix alignment may be performed.
A white leading edge and black trailing edge are provided on the
color bars to check color fit. A new type of pattern, called shading
bars, is provided for the adjustment of screen and background
controls to achieve correct gray -scale tracking. The CD -1 has RF
output on any channel from 2 to 6, with an RF level control to check
sensitivity and prevent overloading of the automatic gain control.
A crystal controlled sound -carrier with off -on switch is provided for
adjusting the fine tuning control. Either positive or negative video
output is available for trouble -shooting video circuits, and may be
adjusted with the video level control. This control also varies the
R.F. modulation which provides a check of color hue and sync with
different signal levels.
Horizontal and vertical sync pulses are crystal controlled to the
same "frame" rate as a TV station. These pulses provide the
necessary blanking and lock the various patterns firmly on the
screen, without jitter or crawl. The user, therefore, may be assured
that color receivers converged with the CD -1 will still be converged
properly on a television program from a station. Self- contained sync
pulses also eliminate the need for any bothersome external sync
leads, and any one of the six available patterns may be selected
with one switch, without any further adjustment to the generator
or receiver.
Dots are small sized and sharply defined, and are fixed as to size
and number. The cross -hatch pattern may be used for linearity
checks on either color or black- and -white receivers. The height
and width of the raster may be determined by counting the fixed
number of bars. Horizontal and vertical bar patterns are also avail ble for convergence adjustments.
The CD -1 is compact, light in weight, and has smooth control
action. The 13 tube circuit has been carefully laid out to allow ease
of assembly. The construction manual contains complete step by -step instructions and pictorial diagrams in addition to a detailed
circuit description, which will be helpful in understanding basic
color circuit principles. Easy to follow calibration instructions are
furnished with actual oscilloscope patterns to aid in alignment.
Convergence, screen and background adjustments of a color set
are also thoroughly covered in the manual. This kit is complete in
every respect including 3 crystals and test lead. The power supply
features voltage regulation and uses long life silicon diode rectifiers.
Compare with other generators on the market and you'll realize
what a tremendous dollar value it represents. Shpg. Wt. 12 lbs.
(s:
HEATHKIT
By
Daystrom
CATHODE RAY
Tube Checker KIT
FEATURES
Self- Contained power supply, transformer operated to furnish
normal test voltages for CRT.
Large 4W 3 color meter scale for quality readings, plus a neon
leakage indicator.
Luggage-type portable cabinet with plastic handle and removable cover.
Permanent test cable with CRT socket and anode connector.
Special spring -loaded switches for complete safety in operation.
SPECIFICATIONS
Checks.
Provides..
Tests
Power
Dimensions
ao
Cathode emission, beam current, shorted elements,
leakage between elements.
Magnified visual inspection of gun aperture. Indication of quality of fluorescent coating.
Electromagnetic deflection types with duo-decal
base, straight or bent guns, electrostatic or electromagnetic focus, clear or filtergiass faceplates,
plain or aluminized screens.
105 -125 volts AC, 50 -60 cycles, 15 watts.
712' high, 6%' deep, 1212' wide.
-err
Here is the ideal tool for checking TV picture tubes. It eliminates all
doubt for the TV service man and, even more important, for the customer. Carry it on service calls and clearly demonstrate the quality
of a customer's picture tube in his own home. This fine unit will
check all electromagnetic deflection -type tubes using the duo -decal
(12 -pin) base. You no longer have to worry about the type of focusing, electron gun or screen. Provision is made for testing for shorts,
leakage, and emission capabilities, with a separate test for beam
current. You can test tubes without removing them from the receiver or carton. Ion traps are not required for any test.
Special provision is made in the model CC -1 for the actual observation of the gun aperture on the face of the CRT. Irregularities
such as rough or burned edges show up clearly through the use of
unique "shadow- graph" method of projection. No special equipment is required; it's all contained in the CC -1. The projected spot
of light will show the customer the relative quality of the tube's
fluorescent coating and light- giving quality of screen phosphor. The
CC -1 is AC power transformer operated and supplies all operating
voltages to the cathode ray tube. It is designed to last a lifetime; no
tubes to burn out or replace. A permanent test cable with CRT socket
and anode connector is included. Quality indications are read on a
large 4X' three color meter scale; shorts on a neon leakage indicator.
You can be sure of its accuracy because the checker sets up all
proper test conditions for each tube element. It is housed in an attractive luggage -type portable cabinet with removable cover. Simple
operating chart provided. Operates in any position. Shpg. Wt. 10 lbs.
a
SAFE ARRIVAL ASSURED
THROUGH PROPER KIT PACKAGING
!
The photograph on the left shows one of our kit packaging lines in
operation. Experience gained in packing thousands of Heathkits
assures you of receiving your kit in top -notch condition. Carton size
is determined by chassis or cabinet dimensions, and these items
are placed in a strong corrugated carton and used as a liner for
additional strength. All other kit material is then packed inside the
cabinet or chassis for added protection. Delicate items are packed
separately to forestall possible damage. Before final sealing of the
kit carton, all unused space is firmly packed witn packing material
to prevent shifting of contents during transportation.
H EAT H K
IT
)
By Daystrom
ETCHED - CIRCUIT
VTVM KIT
FEATURES
Modern printed circuit design for faster, easier construction and stable
performance.
Logical and functional placement of controls for smooth, rapid
operation. I% precision resistors used for high accuracy.
$245
O
Measures ACV (Peak -to- Peak) -ACV (RMS) -DCV- resistance.
High impedance l megohm input.
MODEL
I
V -7A
Comprehensive construction manual for simplified assembly.
SPECIFICATIONS
Electronic D.G. Voltmeter:
7
Ranges
Input Resistance
Sensitivity
Circuit
Accuracy
Electronic A.C. Voltmeter:
T
RMS Ranges
Accuracy
7 Peak -to -Peak Ranges
Electronic Ohmmeter:
7
Ranges
Meter
Multipliers
Circuit Board
Tubes
Battery
Cabinet Size
Power Requirements
Kit Shipping Weight
0 -1.5, 5, 15, 50, 150, 500 and 1500 volts
full scale,
with accessory probe to 30,000 volts.
11 megohms (1 megohm in probe). On all ranges,
1,100 megohms with accessory probe.
7,333,333 ohms per volt on 1.5 volt range.
Balanced bridge (push -pull) using twin triode.
± 3% full scale.
0-1.5, 5, 15, 50, 150, 500, 1500 scales reading
RMS (.707 of positive peak).
± 5% full scale.
0 -4, 14, 40, 140, 400, 1400, 4000.
Scale with 10 ohms center X1, X10, X100, X1000,
X10K, X100K, X1 meg. Measures .1 ohm to 1000
megohms with internal battery.
41/2' 200ua movement, Polystyrene case.
1% precision type.
Printed circuit, etched metal process 3/y' XXXP
laminated phenolic .00135 copper foil.
12AU7, twin triode meter bridge.
1 -6AL5, twin diode full wave AC rectifier.
JIM
111/2
volt flashlight cell.
7%' highs 4 %' wide
x 41/2"
deep.
Charcoal gray panel, feather gray cabinet.
105 -125 volt, 50 -60 cycle AC, 10 watts.
7 lbs.
This exceptionally fine vacuum tube voltmeter will rapidly and conveniently measure AC volts (RMS), AC volts (peak -to- peak), DC
volts, resistance, and db. One switch controls the function selection,
while the other determines the range to be used. Convenient front
panel zero adjust and ohms adjust controls. Zero center operation
within the range of front panel controls. A low voltage scale on the
V -7A provides well over 2'/," of scale length per volt measured!
High input impedance in a vacuum tube voltmeter is valuable in
that the loading effect of the instrument is negligible, and the circuit
under test is not disturbed nor "loaded" by the test instrument.
This, along with the other advantages of a vacuum tube voltmeter,
and especially of the Heathkit V -7A, were formerly reserved for
laboratories because of price. Since the introduction of the brilliant
Heathkit VTVM, however, these advantages have been made available to all. It is especially valuable in all electronic applications. Use
it to measure all operating voltages and potentials such as B+
voltage in AC -DC, or straight AC power supplies -filament voltage
-bias voltage -AVC voltage -line voltage, etc. Ideal for measurements in all types of AM, FM and TV circuits. To check discriminator
or detector operation -AVC or AGC performance -use the ohmmeter
to measure circuit continuity, circuit resistances, to test out individual components with resistance measurements, or to trace out
circuit wiring through cables or chassis openings. The perfect all around instrument for either laboratory or service shop activities.
Functional in design and convenient to use, the time-proven Heathkit
vacuum tube voltmeter is the world's largest selling instrument of
its type and has rapidly become the accepted standard in the industry. You can enjoy the outstanding performance of a Heathkit
VTVM as thousands of others have done!
Adapted for printed circuit board operation, the model V -7A is
now better than ever. Gradual modification of our time-proven VTVM
circuit over the years has resulted in a trouble -free "polished" circuit which can be depended upon for maximum accuracy and stability. A 6AL5 tube operated as a full wave AC input rectifier permits
7 peak -to -peak voltage ranges with upper limits to 4,000 volts. Just
the ticket for you TV servicemen. A voltage divider in the 6AL5 input
circuit limits applied AC input to a safe level. This circuitry, and
isolation of the meter in the cathode of the 12AU7 bridge circuit,
affords a high degree of protection for the sensitive 200 microampere meter.
Extensive operational coverage is afforded by 7 AC (RMS) and
DC voltage ranges of 1.5, 5, 15, 50, 150, 500, 1500, 7 peak -to -peak AC
voltage ranges of 4, 14, 40, 140, 400, 1400, 4000, 7 ohmmeter ranges
of x 1, x 10, x 100, x 1000, x 10 k, x 100 k, x1 megohm, and a
zero -center db scale. Separate AC and DC test leads and probes
are provided for circuit efficiency, and polarity reversing switch is
employed for DC operation.
Most of the V -7A circuit is etched in copper foil and bonded to
The range switch of this instrument is es-
A high quality precision meter is employed in the VTVM. It is imprinted with
two -color black and red calibrations on a
white background. This makes for quick
identification of ranges and maximum
pecially designed for this specific application. Resistors fit conveniently between
decks, and no unused or blank terminals
exist to confuse the kit builder. Note that
precision resistors are used in multiplier
circuits.
legibility.
Time -proven etched metal circuit boards
are employed in the V -7A. These not only
simplify assembly and cut construction
time in half, but they permit levels of circuit stability not possible with ordinary
conventional wiring methods.
high -grade rigid 3/32" XXXP phenolic sheet. This board provides
the circuit, and the components are mounted and soldered to it.
Assembly time is virtually cut in half while assurance is provided
that the V -7A you build will be an exact replica of our laboratory
model. Simplified assembly and constant circuit performance are
important features for your consideration.
in addition, this rugged unit provides firm mounting of components, good, low- resistance conductor paths, and allows individual
standard components to be removed and replaced with new ones
should this become necessary.
A transformer -type power supply is used for the line-operated
model V -7A, with good filtering for improved circuit performance.
The meter is sealed against dust, and is a 4% ", highly readable, 200
microampere unit. Bracket construction behind the panel protects
the circuit parts and allows the VTVM to be placed in any position
without parts damage while construction is in progress. A self enclosed battery for the ohmmeter portion of the circuit fits neatly
into the space behind the panel.
Featuring high, 11 megohm input impedance, the model V -7A is
attractive in appearance also, with the charcoal gray, drawn aluminum panel and high definition white lettering for good readability.
The pilot lamp is recessed behind the panel and shines through the
edge of the plastic meter case for a very smart appearance.
All components used in the V -7A VTVM are of standard, first -line
HEATHKIT 30,000 VOLT
D. C. HIGH VOLTAGE
Probe KIT
quality. The multiplier circuits use deposited- carbon type 1% precision resistors instead of following the usual practice of supplying
matched pairs of ordinary carbon resistors. Switches have been
especially designed for this particular instrument, and represent
every possible consideration from the standpoint of simplified wiring and ease of assembly. Standard brand, commercially available
tubes, tube sockets, condensers, controls, etc., are employed to
minimize service problems in the event component replacements
be required.
The construction manual supplied with the model V -7A VTVM
sets a new standard in instruction material. In this manual we provide detailed step -by -step checkoff assembly procedure for the complete operation of constructing the VTVM. In addition, numerous
schematics, pictorial diagrams and illustrations are used .to insure
trouble -free construction. Besides outlining instrument assembly,
the manual describes the theory of instrument operation and actual
application in measurement work. For further convenience, large scale pictorials are provided which can be fastened to the area above
your work bench for quick reference.
The Heath Company is justifiably proud of the fact that the VTVM
manual is in demand for instruction work in various educational
programs and has set a new pattern level for the entire kit industry.
This kit is complete in every respect -even to the inclusion of test
leads and battery. Shpg. Wt. 7 lbs.
HEATHKIT ETCHED
CIRCUIT PEAK -TO -PEAK
Probe KIT
HEATHKIT ETCHED
CIRCUIT RF
Probe KIT
NO. 336
No. 338-C
No. 309-C
For TV service work or any similar application
where measurement of high DC voltage is required, the Heathkit high voltage probe will prove
invaluable.Aprecision multiplier resistor mounted
inside the two -color sleek plastic probe body provides a multiplication factor of 100 on the DC
ranges of the Heathkit 11 megohm VTVM. Plenty
of insulation for safety of operation, even at highest TV potentials. Shpg. Wt. 2 lbs.
Now read peak-to -peak voltages on the DC scale
of any 11 megohm VTVM with this new probe
employing printed circuits for circuit stability and
low loss. Readings can be made directly from the
VTVM scales without involved calculations. Measurements over the frequency range of 5 kc to 5
megacycles. Use this probe to extend the usefulness of your VTVM in radio and TV service work.
Note: Not required for the new Heathkit V -7A
VTVM. Shpg. Wt. 2 lbs.
The Heathkit RF Probe used in conjunction with
any 11 megohm VTVM will permit RF measurements up to 250 megacycles ± 10%. A useful, convenient accessory for those occasions when RF
measurements are desired. Uses printed circuits
for increased stability and ease of assembly.
Ideal for further extending service applications
of your Heathkit VTVM. Shpg. Wt.
lb.
$450
$550
$350
1
C
H
EAT HKIT
By Daystrom
i
4)
x
Tube Checker KIT
FEATURES
Simplified harness wiring.
Adequate roll chart illumination- easy -to-read panel lettering.
Individual tube element switches.
Attractive counter -style cabinet.
Large 41A" meter with 3 color "Good -Bad" scale.
SPECIFICATIONS
Checks for quality, emission, shorted elements,
open elements, filament continuity.
4, 5, 6, and 7 pin large, regular and miniature,
octal, loctal, Hytron, 9 -pin miniature and pilot
lamps.
Large 41/2' meter with "GOOD -BAD" scale.
Built in, illuminated, smooth action.
Switch selected, 14 different voltages from 0.75 to
Test
Tube Types
Meter
Roll Chart
Filament Voltage
117 volts.
Element Test Voltages
Dimensions
Power Requirements
0-250 volts.
14' wide x 11' deep x 41/2' high.
105 -125 volts, 50-60 cycles, line adjust control.
This modern tube checker is a favorite with service technicians all
over the country, as well as with the beginning novice. Outstanding
in both quality and performance the TC -2 will check all tube types
commonly encountered in radio and TV service work. Tubes can be
tested for open, short, leakage, heater continuity and quality. Tube
condition is indicated on the large 4%" meter with multi -color "good? -bad" scale. A neon bulb indicator shows filament circuit continuity, and leakage or shorts between elements. 10 three -position
lever switches check each tube element for open or short individually. The lever switch arrangement for each tube element is not only
rapid and flexible, but also insures the instrument against obsolescence. A blank socket is provided for future tube types. The
V
TC -2 wil check 4, 5, 6 and 7 -pin octal and loctal tubes, 7 and 9 -pin
miniature tubes, and the 5 -pin hytron tubes. Provision is made for
checking pilot lamps with a contact -type socket. Fourteen different
filament voltages are available from .75 to 117 volts. The line adjustment control incorporated offsets any variation in the line voltage.
An illuminated roll chart contains all necessary tube test data. A
top cap clip lead is provided for testing vacuum tubes with grid or
plate caps. Neat professional wiring and simplified construction is
assured through a color -coded cable harness and easy -to- follow
instructions, All parts supplied are of the highest quality for years
of dependable service. Eliminate guesswork, and save time by
having your own tube checker. Shpg. Wt. 12 lbs.
HEATHKIT PORTABLE
HEATHKIT PORTABLE
The TC -2P is identicattothe TC -2 except
Portable tube checker case may be purchased separately
for the TC -2, and will also fit the earlier Model TC-1 Tube
Checkers. See description in portable tube checker
advertisement on this page. Shipping weight 7 lbs.
Cabinet No. 91 -8. Worth every penny of the price.
Tube Checker KIT Tube Checker CABINET
MODEL TC -2P
$3450
that it is housed in a rugged carrying
case. This is a strikingly attractive and
practical two -tone case finished in
proxylin impregnated material. The cover
is detachable and the hardware is brass
plated. Topped off with a sturdy plastic
handle, this case imparts a professional
appearance to the instrument. Ideal for
home service calls or any portable application.
Carrying case also serves to protect
the tube tester when it's not in use. Seals
out dust, and protects the meter and
switches from injury. Only $34.50 complete. Shpg. Wt.
15
lbs.
NO. 91-8
$ 750
HEATHKIT TV PICTURE TUBE
Test Adapter...
The Heathkit TV Picture Tube Test Adapter is designed
to be used with the Model TC -2 Tube Checker. Check for
emission, shorts, etc. in TV picture tubes and thereby
determine tube quality. Consists of 12 -pin TV tube socket,
4 ft. cable, octal connector, and necessary technical data.
Not a kit, but a ready -assembled device. Shpg. Wt. 1 lb.
$450
HEATHKiT
By Daystrom
VISUAL -AURAL
Signal Tracer KIT
FEATURES
2
channel input for visual and aural signal tracing.
Built -in wattmeter, 30-500 watts calibrated- unique noise locator
circuit.
High RF sensitivity- permits signal tracing in all parts of radio receiver.
$2350
MODEL
Useful in AM, FM and TV sets-RF and audio probes furnished.
T -3
Substitution test speaker and output transformer.
SPECIFICATIONS
Channels
Indications
Tubes
with demodulator type probe,
1
hi -gain
1
lo -gain with audio probe.
Built -in speaker -electron
beam "eye" tube.
1208 amplifier, wattmeter rectifier;
12SH7 high gain pentode amplifier;
12A6 beam power output;
1629 electron beam visual indicator;
6X5 full wave rectifier.
Power
105 -125 volts AC, 50-60 cps. cycles.
Dimensions
91/2' wide,
61'
high, 5' deep.
TTT®Te
I"
Here is an instrument loaded with extras to make your work easier.
The model T -3 Signal Tracer permits visual and aural signal tracing
of RF, IF, and audio circuits in AM, FM and TV receivers. Also included is a built -in wattmeter (approximately 30 to 500 watts) which
provides a means of quickly checking a suspected circuit for unusual wattage consumption. A "noise locator" circuit permits you
to easily pick out resistors, condensers, controls, etc. that may be
causing noisy reception. The kit includes both audio and RF probes
so that you can trace a signal through a complete radio receiver
from antenna to speaker locating a defective stage immediately.
Signal strength is indicated by a built -in 4" PM speaker as well as
an electron beam "eye" tube. Two input channels are provided
(audio -RF) to take care of all sections of a receiver under test. The
speaker and output transformer can be used separately for test purposes when either or both of these items are missing from a receiver
being serviced. Panel binding posts are provided along with aspeaker
switch so that external connections can be made quickly to the
speaker voice coil or the output transformer primary or both. Detailed instructions are provided for assembly as well as information
on its use in various applications. The T -3 is a real wort horse, you
can use it for years and still discover new applications from time to
time. Shpg. Wt. 9 lbs.
MODERN FACILITIES TO SERVE YOU EVEN BETTER!
Soon after you receive this catalog the Heath Company will be moving into its
new plant now nearing completion. The modern factory and office will contain
140,000 square feet of floor area, which will enable us to do an even better job
of serving you in the future. New Office equipment and methods of order
handling as well as a smooth flow of materials from the receiving platform
through the production lines and to the shipping platform, will help us to
expedite your orders. New engineering facilities will alleviate overcrowded
conditions allowing us to more rapidly expand and improve our present line
of kits to continue giving you the most for every dollar you spend. Please
stop by and see us when you are in this area.
HEATHKIT
By Daystrom
RF SIGNAL
Generator KIT
FEATURES
Separate oscillator sub -chassis for uniform circuit characteristics.
160 kc to 110 me on fundamentals; 110 me to 220 me on calibrated
harmonics.
Prewound and precalibrated coils.
$195
MODEL
SG -8
6
3
vernier dial ratio.
outputs available: unmodulated
to
1
RF- modulated
RF-audio at 400
cps.
SPECIFICATIONS
Frequency
RF
output
Modulation
160 kc to 110 me fundamental on 5 bands,
110 me to 220 me on calibrated harmonics.
i
In excess of 100,000 microvolts at low impedance.
400 cps
internal; provisions for external modu-
lation.
Attenuation
AF
output
Step and fine types.
2
to
3
F
volts at approx. 400 cps.
-12AU7, -6C4.
Tubes
1
Power
105 -125 volts AC, 50/60 cycles.
Dimensions
9W
1
wide, 6W' high, 5' deep.
This instrument is "service man engineered" to fill the requirements for a reliable service instrument at moderate cost. Frequency
coverage extends in five bands from 160 kc to 110 me on fundamentals, and the dial is calibrated to 220 me for usable harmonics
of the fundamental frequencies. Prewound and precalibrated coils
make calibration unnecessary for service applications. Construction
is simple and straight- forward, and the comprehensive construction book with step -by -step assembly procedure assures success.
All parts are included in the kit, ready for assembly. Build your own
generator and save! A reliable signal generator should be among
the first test instruments purchased by the part -time serviceman or
beginning service shop operator. Any radio and TV service shop
without a good reliable signal generator is seriously handicapped.
Wasted time means less profit. The SG -8 provides a quick means of
alignment in RF, IF and tuned circuits of all kinds. Use it as a signal
source for signal tracing in a faulty RF, IF or audio circuit to quickly
locate the defective stage in the receiver under test. In a very short
time it will pay for itself in time saved.
The Heathkit model SG -8 Signal Generator kit provides a stable,
modulated or unmodulated output of at least 100,000 microvolts
which can be controlled by both the continuously variable attenuator
and a fixed step attenuator. Internal modulation is at a frequency
of 400 cycles, or the unit can be externally modulated at other frequencies. The 400 CPS signal can also be used separately for audio
tests if desired. AF output of 2 -3 volts is available for audio testing.
The model SG -8 uses a dual purpose 12AU7 as a colpitts oscillator
and cathode follower for stable, isolated, low impedance output,
and a type 6C4 tube for 400 cycle oscillator. The power supply is
transformer operated for safety and efficiency. A special sub -chassis
is provided for the installation of the entire oscillator circuit, thus
keeping control over all variables that would affect frequency.
The SG -8 has excellent stability due to the use of a cathode follower buffer stage between the RF oscillator and the output circuits.
Its low impedance is another desirable characteristic. Overall efficiency is assured by the use of top quality components throughout.
The kit is complete including output cable, alligator clips, and comprehensive instruction manual. Accuracy of calibration is most
important. Operation of the SG -8 is well within the limits normally
required for service work. Shpg. Wt. 8 lbs.
HEATHKMT
By Daystrom
LABORATORY RF
Generator KIT
FEATURES
Panel meter calibrated in output voltage and percent modulation.
Double shielding of oscillator circuits.
Operation on fundamentals from 100 kc to 30 me in five ranges.
$4895
MODEL
Output impedance termination 50 ohms.
Voltage regulated B plus supply- transformer operated.
LG -1
SPECIFICATIONS
Frequency
100 kc - 30 me in 5 calibrated bands.
Output
Attenuation
up to 100,000 microvolts.
.......
...10:1 ratio in
steps,
5
ratio continuous
10:1
metered.
Modulation
0 -504', metered,
400 cps internal, or 60- 10,000
cps external.
Termination...
Tubes
Power.
Dimensions....
The Heathkit LG -1 Laboratory Generator was designed for the professional service shop or laboratory, and is an instrument suitable
for use in design and development work as well as in servicing. It
established a new standard of performance for kit instruments.
Ideal for checking RF and IF stage gain, overall circuit sensitivity,
demodulator performance, or selectivity. Such applications are
possible because of the accurately calibrated 200 microampere
panel meter which will read the output voltage in microvolts or
percent modulation. The choice is provided by a meter switch. A
real timesaver for otherwise difficult alignment and adjustment
problems.
The frequency range of this fine instrument is from 100 kc to 30
me -all on fundamentals, and divided into five easy-to -read calibrated bands. The metered output is in excess of 100,000 microvolts,
and both fixed step and variable output attenuation are possible.
Circuit operation is stabilized by copper -plated double shielding,
plus voltage regulation in the power supply. A flexible instrument,
the LG -1 has provision for internal modulation or external modulation, and uses a colpitts RF oscillator followed by an amplifier which
is grid modulated by the colpitts AF oscillator and cathode follower
circuits. DC is fed through the meter switch from the fine attenuator
control for RF level and from the AF cathode follower for modulation
percentage. The output is obtained at a coaxial cable terminating
in a plastic "pod" provided with two binding posts for convenient
connection right at the circuit under test. The terminating resistance
is enclosed in the pod, and can be changed if desired. Modulation
50 ohms.
1
-6AF4, -6AV5,
1
1
- 12AU7,
1
-0B2.
105 -125 volts AC, 50 -60 cycles.
_13' wide,
81/2' high,
7'
deep.
is variable from 0 to 50 %, and is at a frequency of 400 cycles internally, or can be modulated externally at frequencies between 60 CPS
and 10,000 CPS. The power supply consists of the power transformer, line filter, selenium rectifier, L -C filter, and an 0B2 voltage
regulator.
The Heathkit Laboratory Generator is complete with all parts
furnished including output cable. The several sheet metal shields
and chassis are factory formed and punched for perfect fits. An
attractively finished and professional panel makes the LG -1 an
instrument that you can be proud to own. Construction and use are
simplified by the now famous Heathkit manual of instruction. Invest
a little time and money now and be rewarded by many years of
dependable service. The model LG -1 is a top-notch instrument all
the way through. Shpg. Wt. 16 lbs.
HEATH KIT
By Daystrom
20,000 OHMS /VOLT
ATOM
KIT
FEATURES
20,000 ohms per volt sensitivity DC, 5,000 ohms per volt AC.
Polarity reversal switch-eliminates transferring test leads.
All 1% precision multiplier resistors.
O
MODEL
Sensitive 50 microampere 41A" meter.
MM -1
Modern cabinet styling-attractive appearance.
SPECIFICATIONS
Sensitivity
Range, DC volts
Range, AC volts
Range, Direct Current
Range, Ohmmeter
Range, Decibels
Resistors
Controls
Batteries
Cabinet
Dimensions
Net Weight
Shipping Weight
20,000 ohm /volt DC, 5000 ohm /volt AC.
1 5, 5, 50, 150, 500, 1500, 5000.
1
5, 5, 50, 150, 500, 1500, 5000.
150 microamperes,
15 amperes.
15 -150 -500 milliamperes,
02 ohms to 20 megohms.
-10 to +65 db.
1% precision type.
Range switch, Output- AC -DC- Reverse DC switch,
Ohms adjust control.
1 type C cell, 4 Pentito cells.
Black Bakelite.
7W
X
5W
X
4'.
4 lbS.
6 lbs.
The Heathkit VOM provides wide voltage, current, resistance and
db ranges to cover hundreds of possible applications. Sensitivity is
20,000 ohms -per-volt DC and 5,000 ohms -per -volt AC. Function and
range switches provide full scale settings of 0 -1.5, 5, 50, 150, 500,
1500 and 5000 volts for both AC and DC. Current ranges are 0-150
ua, 15 ma, 150 ma, 500 ma and 15 a. Resistance ranges are R x
(15 ohm center scale), R x 100 (1500 ohm center scale), and R x 10 K
(150,000 ohm center scale). Measures resistance from as low as .2
ohms to as high as 20 megohms. Db coverage is -10 db to +65 db.
Maximum accuracy is assured on all ranges by the use of 1% voltage
divider resistors. The model MM -1 is insensitive to RF fields and may
be used in transmitter work as well as all other types of electronic
1
service, both at home and in the field. Each part used in the Heathkit
VOM was chosen for both quality and ease of construction. The
large 4%" 50 microampere meter has more than enough sensitivity
for even the lowest voltages on the 1.5 volt scale. Actually a single
volt on the lowest range will cause a deflection of 2'," for accurate
low -level indications. A polarity reversing switch is provided right
on the front of the instrument eliminating transferring of test leads
when alternately measuring + and
voltages. The sleek black
bakelite case not only keeps out dust and protects internal components but makes the instrument most attractive. Requiring no
external source of power, the MM -1 uses standard commercial
batteries that are easily replaced when necessary. Shpg. Wt. 6 lbs.
-
HEATHKIT
Handitester KIT
The Heathkit Handitester is an ideal first instrument for
the hobbyist, home experimenter, or home handyman.
Just the ticket for measuring line voltage, checking
batteries, testing continuity of circuits, doing automotive electric repairs, or repairing home appliances,
servicing high fidelity systems, or servicing radio or TV
sets at home. The instrument is completely portable in
that it requires no external source of power. Measures
AC and DC voltages, direct current. and resistance.
AC and DC voltmeter ranges are 0-10, 30, 300, 1000 and
5000 volts. Measures resistance from 0 to 300 ohms (30
ohm center scale), and from 0 to 300,000 ohms (3,000
ohm center scale). Also measures direct current from
0 to 10 ma, and 0 to 100 ma. Sensitivity is 1,000 ohms-
per -volt, 1% precision resistors employed. No calibration required. The physical dimensions of the M -1 are
such that it can be kept in your automobile glove compartment, desk drawer, tool box, or on the work bench.
Very handy for use in radio and TV service shops when
the main test instruments are occupied, and perfect
for quick checking on home service calls. The 3" meter
scale is easy to read and the combination function range switch simplifies operation. Equally valuable for
the beginner or the experienced service man or engineer. Easy to build from complete instructions supplied. Streamlined bakelite case measures 3" W. x 6" H.
x 2%" D. Test leads and 1% V. size C battery included
with kit. Shpg. Wt. 3 lbs.
MODEL M -1
x14"
HEATHKIT
By Daystrom
Condenser Checker KIT
FEATURES
Direct reading scales-measures capacity and resistance.
Leakage indicated on eye tube.
Calibrated power factor scale.
Checks paper, mica, ceramic, electrolytic condensers.
Safety spring- return test switch.
Five polarizing leakage test voltages.
ANEW
SPECIFICATIONS
Capacity:
4
ranges
.00001
.001
.1
mfd-.005 mfd
mfd-.5 mfd
mfd-50 mfd
20
mfd-1000 mfd.
DC Leakage Test
Polarizing Voltages: 5 ranges..
Resistance Ranges.
2
Circuit.
Cabinet Size
Power Supply
Power Requirements.
Shipping Weight
Here is an instrument that will measure those unknown condenser
and resistor values. All readings are taken direct from the calibrated
scales without the requirement of any involved calculation. Capacity
measurements on four ranges of 0.00001 mfd -O.005 mfd; 0.001 mfd
0.5 mfd; 0.1 mfd -50 mfd, 20 mfd -1,000 mfd. Checks paper, mica,
ceramic, and electrolytic condensers. A power factor control is
available for accurate indication of electrolytic condenser efficiency.
Leakage test provides switch- selection of five polarizing voltages,
25 volts to 450 volts DC to indicate condenser operating quality under
actual load conditions. Leakage is indicated directly on eye tube.
A spring- return test switch automatically discharges condenser
under test and eliminates shock hazard to the operator.
-
HEATHKIT CONDENSER
ranges
25 volts DC
150 volts DC
250 volts DC
350 volts DC
450 volts DC.
100 ohms to 50,000 ohms
10,000 ohms to 5 megohms.
AC powered bridge for both capacitive and resistive measurements. Maximum opening of electron beam indicator denotes bridge balance.
91/2' wide x 61/20 high x 5' deep.
Transformer operated -half wave rectifier.
110 -125 volts, 50-60 cycles AC.
7 pounds.
Resistance measurements can be made in two ranges from 100
ohms to 5 megohms. All values are read directly on the calibrated
scale. Increased sensitivity coupled with an electron beam null indicator increases overall instrument usefulness.
For safety of operation, the circuit is entirely transformer operated
and the instrument is housed in an attractively styled cabinet with
rounded corners and drawn aluminum panel. The outstanding low
kit price for this surprisingly accurate instrument includes necessary
test leads. Good service shop operation requires the use of this
specialized instrument for the express purpose of determining unknown condenser and resistor values as well as their operating
characteristics. Shpg. Wt. 7 lbs.
HEATHKIT RESISTANCE
Substitution Box KIT Substitution Box KIT
MODEL
CS -1
$550
The Heathkit Condenser Substitution Box
with an 18- position panel switch provides
individual selection of any one of 18 RTMA
standard condenser values ranging from
0.0001 mfd to 0.22 mfd. All capacity values
are rated at 600 volts with the exception of
the three largest which are 400 volts. Condensers are either silver-mica or plastic molded tubular types.
The CS -1 provides convenient selection
of individual substitution values. Aluminum
panel, bakelite cabinet, and 18" flexible
leads with alligator clips. Shpg. Wt. 2 lbs.
The Heathkit Resistance Substitution Box
provides quick, convenient switch selection
of any one of 36 RTMA 1 -watt standard 10e%
resistors ranging from 15 ohms to 10 megohms. Ideal for experimentally determining
desirable resistance values and for altering
circuit operating characteristics quickly.
Many applications in radio and TV work for
determining values of charred resistors,
unmarked values, etc.
This unit is housed in an attractive bakelite cabinet. Kit is priced lower than retail
value of resistors alone. Shpg. Wt. 2 lbs.
MODEL
RS -1
$550
-------H EAT H K I
T
By Daystrom
DIRECT READING
Capacity Meter KIT
FEATURES
Reads capacity directly on 412" 50 microampere meter.
Four ranges
-0 -100 mmf, 0-1000
Residual capacity less than
O
Power line
MODEL
CM -1
I
mmf, 0 -.01 mfd and 0 -0.1 mfd.
mmf -not affected by hand capacity.
operated- voltage regulation
for stability.
Precision condensers supplied for initial calibration.
SPECIFICATIONS
Ranges
0 to 100
mmf., 1000 mmf., 0.01 mfd. and
full scale.
Tubes..... ...
Meter...
Calibrating Condensers
Power Requirements
Dimensions
Net Weight
Shipping Weight
0.1
mfd.
6BX7GT Oscillator.
6X5GT Rectifier.
OA2 Voltage Regulator.
Easy to read 41' meter with linear scale and
streamlined case; 50 microampere movement.
±1% for 100 and 1000 mmf. ranges.
±2% for 0.01 and 0.1 mfd. ranges.
105 -125 volts AC, 50/60 cycles, 25 watts.
71' high x 4i ,As wide x 41/2' deep.
5 lbs.
7
lbs.
For quick, accurate checks of condensers on an assembly line, in
quality control, or in the service shop, the CM -1 is ideal. Extremely
easy to operate, it is only necessary to connect the condenser to be
checked to the terminals on the front panel, and select the proper
range. The value of the condenser is then read directly on the large
41A" 50 microampere panel meter calibrated in mmf and mfd. Calibration is linear with four ranges provided, 0 -100 mmf, 0 -1,000 mmf,
0 -.01 mfd and 0 -.1 mfd. The residual capacity is less than 1 mmf and
is not affected by hand capacity. The CM -1 features a transformer
operated power supply with voltage regulation for stability. Individual calibration potentiometers in conjunction with four precision capacity standards enable rapid full scale calibration in each
range. Once accomplished, calibration will hold constant over ex-
1_
tended periods of time. Standard calibrating capacitors are supplied
with each instrument in the following values: 100 mmf t1 %; 1,000
HEATHKIT DECADE
Resistance
KIT
Imagine having any resistance value between
ohm and 99,999 ohms at your fingertips and all at
1% accuracy. That's just what you have in the
Heathkit Decade Resistance Model DR -1. Twenty
1% precision resistors are neatly arranged
around 5 rugged switches labeled "UNITS ",
"TENS," "HUNDREDS," "THOUSANDS," AND
"TEN THOUSANDS." Various combinations of
switch positions will provide the total range in
ohm steps. Use it for ohmmeter calibration, in
bridge circuits, as test values in multiplier circuits
and for a multitude of experimental applications.
An unusually low price fora real precision device.
Shpg. Wt. 4 lbs.
1
$19so
mmf *1 %; 0.01 mfd t2 %; 0.1 mfd *2%. The field of application for
the CM -1 is extremely broad. Radio amateurs, audio engineers, experimenters, and hobbyists are all finding new uses for this remarkable instrument. Simplicity of operation makes bridge accuracy of
capacity measurement available. It will follow the capacity change
of a variable capacitor, smoothly and accurately, from the tiniest
trimmer to the largest broadcast capacitor. Research and development laboratories use the CM -1 in experimental work and television
receiver manufacturers are finding increasing uses for it on their
production lines and for quality control. Since operation is simple
and automatic, much time is saved in making repetitive capacity
measurements or adjustments. The chassis layout of components
allows ease of assembly. The small size and fine appearance of this
unit will fit in nicely with your other equipment. Measures 7%" H. x
4 %" W. x 4h" D. Shpg. Wt. 7 lbs.
HEATHKIT DECADE
1
MODEL DR -1
0
Condenser
KIT
This kit provides capacity values from 100 mmf
to 0.11 mfd in 100 mmf steps so that exact capacitor values are available for determination. of
capacitor values in compensating networks, filters, bridge impedances, tuned circuits, etc. It is
ideally suited for use in all types of design and
development work.
Precision 1% silver -mica capacitors are employed for high accuracy. Switches are ceramic
wafer types for minimum loss, and feature
smooth action and positive detent. It must be
used to appreciate its convenience, and the interesting design possibilities it presents. Shpg.
Wt. 3 lbs.
MODEL DC -1
$165°
H
EAT H KIT
By Daystrom
"IN- CIRCUIT''
Capaci- Tester KIT
FEATURES
Checks most capacitors without circuit disconnect.
Saves time by convenient, fast operation.
Electron beam "eye" tube used as indicator -quickly shows "open" or
"shorted" condition.
MODEL
CT -1
Function switch allows continuous check of tester operation.
Easy -to- build
-a pleasure to use.
$795
SPECIFICATIONS
Range:
Open Test
50 mmfd to infinity. (Shunted by more than' 2 k
ohm at 50 mmfd, 400 ohm at 100 mmfd, 30 ohm at
Short Test...
Test Frequencies:
Short Test
Open Test
Cabinet Size:
-
350 mmfd or more.)
Up to 20 mmfd. (Shunted by 10 ohm or more.)
60 cycles.
19 megacycles.
7%
high,
4ri/i6'
wide by 4i%' deep.
I
Anyone who has had the experience of hunting for a shorted or
open condenser in a television receiver or radio will appreciate the
advantages offered by the model CT -1 Capaci- Tester.
With the CT -1 it is no longer necessary to disconnect the capacitor
lead to check the part. You can check most capacitors for "open" or
"short" right in the circuit, saving a lot of valuable time in the service
shop or lab. The CT -1 is compact, easy -to- build, and inexpensive.
The capaci- tester detects open capacitors from about 50 mmf up,
so long as the capacitor is not shunted by an excessively low resistance value. It will detect shorted capacitors up to 20 mfd (not
shunted by less than 10 ohms). (Does not detect leakage nor check
electrolytic condensers.)
A five -position function switch is employed, which controls the
power to the instrument and selects the test being made, it also
provides a continuous check on the proper operation of the tester
itself. An electron beam "eye" tube is used as an indicator. The
front panel is attractively screened making the function of the switch
self-explanatory. A picture of the "eye" tube is shown for each test
so no other reference is required. Any deviation from the picture
shown would indicate a defect in that part being tested. The circuit
employs a 60 cycle frequency for the "short" test and a 19 megacycle frequency for the "open" test. The CT -1 is complete in every
respect including test leads. It will prove to be an invaluable aid
in locating the general run of capacitor troubles.
Checks all bypass, blocking, and coupling capacitors of the paper,
mica and ceramic types. At this low price you can hardly afford to
be without a CT -1 on your bench. It will pay for itself with the time
it saves. Shpg. Wt. 5 lbs.
HEATHKIT VARIABLE VOLTAGE
Isolation Transformer KIT
The Heathkit model IT -1 is another handy unit for
the service shop, home workshop, or laboratory.
This unit provides complete isolation from the
power line since there is no direct connection between the primary of the transformer and the
secondary. AC -DC sets may be plugged directly
MODEL
IT -1
$16"
into the IT -1 without the chassis becoming "hot ".
Ideal for use as a buffer between the power line
and a questionable receiver or a new piece of
equipment that has never been operated before.
Since the IT -1 is fused, it protects house fuses or
main fuses in the shop. The output voltage is
variable from 90 volts to 130 volts allowing checks
of equipment under adverse conditions such as
low line voltage. A panel meter monitors the output
voltage. The IT -1 can also be used to isolate interference- radiating devices from the AC line. The
transformer is rated at 100 watts continuously or
200 watts intermittently. Measures 8" H. x 4 %" W.
x 4%" D. Shpg. Wt. 9 lbs.
4
NßATMK1T
6
By Daystrom
-12 VOLT
Battery Eliminator KIT
FEATURES
Either 6 or
12
volt operation -useful also
as
battery charger.
Continuously variable voltage output.
Constant ammeter and voltmeter monitoring.
$ 315
co MODEL
Automatic overload relay -self resetting.
BE -4
18
plate split -type heavy duty rectifier unit.
SPECIFICATIONS
Conti
0
ly variable
voltge
-8 volts DC
.10 amperes continuously, 15 amperes maximum
intermittent.
0 -16
volts DC
5
amperes continuously, 7.5 amperes maximum
intermittent.
Dimensions..
Power Requirements...
131/4' wide x 71/2' deep
.
a
71/4' high.
105 -125 V, 50-60 cycles AC at 175 watts.
This modern battery eliminator is essential for all auto radio service
work. It supplies 6 or 12 volt output at a flick of the panel switch so
that conventional radios or those from the new automobiles with 12volt systems can be serviced on your work bench. This completely
eliminates the necessity of keeping a storage battery on the service
bench.
Voltage is continuously variable in the two output ranges; from 0
to 8 volts DC at 10 amperes continuously, or from 0 to 16 volts DC at
5 amperes continuously. It will deliver up to 15 amperes at 6 volts,
or up to 7 amperes at 12 volts.
Smooth DC output is assured through the use of two 10,000 micro farad filter capacitors. Two panel meters indicate voltage and current
output simultaneously.
Continuously variable output is especially valuable for determining receiver operation under other than ideal conditions. Voltage
can be lowered to determine the starting point of vibrators, or the
operation of the local oscillator in the receiver under adverse conditions. The power transformer winding is fuse - protected and for
additional safety, an automatic relay of self -resetting type is incorporated in the DC output circuit.
The BE -4 is housed in a heavy duty steel cabinet, ventilated to
allow cooling of rectifier and transformer when operating with
equipment requiring high current drain. Heavy duty binding posts
are provided to handle the large size wire necessary to carry the
high current involved. The BE -4 can also be used as a battery
charger in the auto radio service shop. Shpg. Wt. 17 lbs.
HEATHKIT
Ripple Filter KIT
The Battery Eliminator Filter model BF -1, is a ripple
smoothing device to be used in conjunction with
existing battery eliminators or other low voltage
power supplies. It is designed primarily for use with
the Heathkit model BE -4 Battery Eliminator or other
comparable units. The purpose of this unit is to add
extra filtering to the DC output of varous battery
eliminators or power supplies, so that they may be
used in servicing "hybrid" car radios and other devices that derive their tube plate voltages and transistor voltages directly from the storage battery. The
circuit consists of a choke and capacitor which connect to form an L- section filter. It will function at
6 or 12 volts, at up to 5 amperes maximum current. To
use merely connect the output of the battery eliminator or power supply on hand, to the input terminals
on the filter plus to plus and the minus to minus. The
output terminals of the filter are then connected to
the unit under test. This unit is very easy to build and
use. The instruction manual provided has complete
step -by -step instructions plus information on its use.
A copper wire table is also provided in the manual
giving full particulars on safe current handling
capabilities-of various sizes of wireMaximum current
capacity is 5 amperes continuously or 7.5 amperes
intermittently. The cabinet measures 7%" H. x
434" W. x 4%" D. A valuable accessory for any BE -4
owner. Shpg. Wt. 8 lbs.
MODEL BF -1
$10"
HEATHKIT
)
By
Daystrom
LOW RIPPLE
Battery Eliminator KIT
FEATURES
Extra low- ripple filter circuit -less than .3% AC ripple.
Separate lo -filter and hi -filter output.
Output voltage and current monitored on panel meters.
6 or 12 volt operation-continuously variable output.
Ideal for all kinds of transistor work.
MODEL
BE -5
$3995
SPECIFICATIONS
Continuously Variable Output:
0 -8 volts DC
0
-16 volts
DC
Filtered Output Ripple:
6 volts DC at 5 amperes
12 volts DC at 5 amperes
Power Requirements
Dimensions
Net Weight
Shipping Weight
This brand new Heathkit Battery Eliminator is modern in the fullest
sense of the word) It incorporates an extra low- ripple filter circuit
so it can be used to power all the newest transistor type circuits
requiring 0 to 12 volts DC, and the new "hybrid" automobile radios
using both transistors and vacuum tubes. Its DC output, at either
6 or 12 volts, contains less than .3% AC ripple.
The special filter circuit is built right in and the highly filtered
6 or 12 volt DC output is available at up to 5 amperes at a separate
pair of output terminals. "Hybrid" car radios and other similar
devices which power their tube and transistor stages directly from
the car battery, can tolerate only a small percent of ripple. In addition,
the model BE -5 has another pair of output terminals for output
10 amperes continuously, 15 amperes max.
inter-
mittent.
5 amperes
continuously, 7.5 amperes max. inter-
mittent.
Less than 0.3 %.
Less than 0.3 %.
105 -125 Volts, 50-60 cycles AC at 200 watts.
13' wide,
81'
high, 7" deep.
20 pounds.
23 pounds.
with a normal amount of filtering, for use as a battery eliminator on
conventional -type auto radios, etc. Here, the unit will supply up to
15 amperes on the 6 -volt range or up to 7 amperes on the 12 -volt
range. The output voltage is variable on both ranges, from 0 to 8
volts, or from 0 to 16 volts.
The BE -5 is ideal for servicing 6 or 12 volt car radios of the vibrator
type, transistor type, or "hybrid" types. It will double as a battery
charger, and is often used as a marine converter for small pleasure
boats, or will supply voltage for small DC motors (such as electric
trains), etc. It is housed in a modern case with rounded corners, and
two meters on the front panel constantly monitor output voltage and
output current. Shpg. Wt. 23 lbs.
HEATHKIT
6 -volt Vibrator Tester KIT
MODEL
VT -1
$1450
Your repair time is valuable, and the use of the Heathkit Vibrator Tester will save many
hours of service work. This tester will instantly tell you the condition of the vibrator being
checked, and in addition, the test is thorough and complete. Condition of the vibrator is
read directly on the simple "BAD- GOOD" scale. The Heathkit VT -1 Vibrator Tester checks
both interruptor and self- rectifier types of vibrators. Five different sockets are provided
for checking hundreds of vibrator types.
This vibrator tester operates from any battery eliminator capable of delivering continuously variable voltage from 4 -6 volts DC at 4 amperes. The Heathkit model BE -4 or
BE -5 Battery Eliminator is an ideal companion piece for this tester. The kit is supplied
complete, can be quickly assembled and will provide many years of time -saving service
in your shop. Construction book contains vibrator test chart, providing data for testing
popular vibrator types. Operating instructions printed on front panel of tester for convenient reference. Cabinet measures 10" L. x 7T W. x 3%" D. Shpg. Wt. 6 lbs.
-liCj
HEATHKIT
By Daystrom
Impedance Bridge KIT
FEATURES
Battery type tubes, no warm -up required.
12% precision resistors and silver-mica condensers.
$5950
i
Built-in phase shift generator and detector amplifier.
MODEL
IB - 2A
Slanted control panel for easy reading of controls and meter.
High accuracy and versatility at low cost.
SPECIFICATIONS
Circuit..
DC
...
.
_
.
_
Measurements
Meter
AC Measurements
impedance bridge.
Built -in power supply operates from 110V. AC
Binding posts provided for use of external supply.
100 -0 -100 microampere meter.
Built -in 1000 cycle generator. Terminals on pane
for connection of external generator for measurement at other frequencies.
Vacuum tube detector and rectifier make use of
built -in meter. Panel binding posts provide for
connection to external detector.
01 ohm to 10 megohm.
100 mmf to 100 mfd.
4 -arm
I
Detector
Resistance
Capacitance
Inductance
Dissipation Factor (D)
Storage Factor (CO ........
Accuracy
Tube Complement
Power Supply
Cabinet Size
Power Requirements
01 mh to 100 h.
0 002 to 1.
0.1 to 1000.
of 1% decade resistors used.
/-1U4
2
and 2 -1L4.
Power transformer and Selenium Rectifier.
8' high x.17' wide x 6' deep.
105 -125 volts, 50/60 cycles, 10 watts.
Because of the low price of the Heathkit model IB -2A, it is available
to the service shop, the radio amateur, and even the home experimenter.
The IB -2A is a self- contained, direct reading precision laboratory
instrument designed for rapid and accurate measurement of resistors, capacitance, inductance, dissipation factors of condensers,
and storage factors of inductors. It employs a Wheatstone Bridge,
a Capacity Comparison Bridge, a Maxwell Bridge, and a Hay Bridge
in one compact package. Measures resistance from 0 -.1 ohm to 10
megohms, capacitance from 100 mmf to 100 mfd, inductance from
0 -.1 millihenry to 100 henries, dissipation factor (D) from 0.002 to 1,
and storage factor (Q) from 0.1 to 1,000. A 100 -0-100 ua meter provides for null indications. The usual headset or other devices for
such measurements are not necessary although provision is made
for using an external detector when desirable. The decade resistors
employed are of %% tolerance for high accuracy.
The IB -2A has its own built-in power supply, 1,000 cycle phase
shift generator, and a vacuum -tube detector. A special 2- section
CRL dial insures convenient operation. Provision is also made for
connecting an external generator for measurements at audio frequencies other than
kc. Battery -type tubes are used so that a
warm -up period is not required and measurements can be made
quickly. They also eliminate changes in operating characteristics
due to thermal effects.
1
The instruction manual has entirely new schematics that clarify
circuit functions in various switch positions. A true laboratory instrument, that will provide you with many years of fine performance.
Shpg. Wt.
12
lbs.
HEATHKIT
Binding Post
KIT...
This sketch clearly shows the universal manner in which Heath
binding posts will accommodate
an alligator clip, banana plug, test
lead pin, spade lug or wire,
To accommodate customer requests a binding post kit is now
available. The kit is sold only in units of twenty complete binding
post assemblies; ten red and ten black insulator caps. Consists
of binding post base, fluted cap, flat fiber washer, shoulder fiber
washer, solder lug and 6 -32 nut; 120 pieces in all.
Shipping wt. pound. Binding post kit #362 -A at
1
$4.00
óóió
QQ
,
A
N N N N N N N r
m
d
no
0 0 0 0 0 0 0 0
_ _ = 7 = _ = n
ro
CD
(D
fD
CD
CD
V
Cr
tn A W
CD
fD
Im
=i
Aóò
ó c ó
=
N
CO
WO
<_
m
(T
ó
=
2
3 3 3 3 3 3 3
ó
°
C000AOOi(W
D
N
Q°J
0 0 0 0
a
'at,'D
O
000000
0000000d
CO
O
C
Z Z
=
a
a
m
ó
..=,....
ñ Z
ó'
Q
O.
D
A
Á
min WNO
OOC`°n:°°°ü,
""5-Rb
z
m
m
o
v
-i3 o
m
ToD
.
r
0
m
N
m
>z
r
m
N
o
z
m
Ñ
Ói
.
.
- Fá
iOinJVw iocn.- vw
oin.-w
iOónóOn
ñwiCwivGiW
v
óvcNi,
:oaioaoo
vio
o
ov°ówmm
»
v
o
.w
in
n,inoo.->
N
Ñ=
NI
w
m
~é
ti
b,pw
i.-om.-mo
v o- w
óóv,w,,
ó vivvn,
woowaorv
in
a,
Z
n
7O
apH
-11
n óN3
N
Q2 O Ñ
_
a
3 =
ó
°'
A
c
O
j.- á ¡O ä
Z
C
^
07
O
c
aW1v.- .-OtOmV
(n?WN
mvvm.
oo.-row wainmm
coca ~~
ári¡v
máivoo
ó-óáo
aivoo ç,aivo°
N
d
7
O
3-o
C
too
.OmmAiO
D o'
=
aW.-Om
btOi,ÁÁiml,
n
m
iDÿ ÁW
oovo, u,>w
PPP!'?'
.-a°Ow
rvvv
M
áÑó
a mÓO
N
QOrQ
á,Ñiwi,m
111
,., u', m
cawN-
.
re
=
á
m
N
Ñ
ci,
m
o
Ó
'm
,...9
o,
ó
3
NDy
N
a
°
Vrm ti
_
O
7
O
N
j
= N
a
'r
F m w m
=_ X
a»mó ó
73
W
CO
USE THIS HANDY ENVELOPE
WHEN ORDERING
Fold, enclose order blank with remittance
seal, stamp and mail.
FOLD
I
w
U
-J
0_
z
>
m
4
Z
m
0
4
-11
o
V
a.
ÁI
m
E
N
0
ri
m
I
4
E
0
r
m
re
z
0
=
z
o
i
a
I-
z
W
IW
m
z
FOLD
W
Ñ Ñ
O
7
Q
E
0
a
IN
y
Q.
ea
a
°
c
3°
N
IL
O
3
ta
L
c
ó
L
3
>.
ce
a'c
ur
=
3
O
0
W
ó 0a
x
3 ó> N
O
.
L
á° E>
c .,
U
m
v,
7
C
O
Ú
cU
y
U
Ñ L
W
E
c
N
en
s
U
j
C
U
7
a a T
c
N
l
C
7
x a
á
E
0
..-
O
T T
C
0
ó
J
O
E
á am aN
O
OU
N
.L.
N
O
O
ea
L
u>,
E
00
C
cO
O
a:
«O
.a
N
>-
N
C
2
C-
HEATH COMPANY
12
A
Subsidiary of Daystrom, Inc.
O
WALNUT
5
D C. O. D.
E TIME
BENTON HARBOR, MICHIGAN
PHONE
CASH
PAY.
PLEASE PRINT OR WRITE NAME AND ADDRESS PLAINLY
NAME
RURAL ROUTE
BOX NO.
STREET
ADDRESS
IF YOU HAVE MOVED SINCE YOUR LAST ORDER
write your old address here:
©
CITY
O
CITY
SHIP TO ANOTHER ADDRESS? Give directions here.
STATE
Tefollowing
lg the
BETTER in the future, we would appreciate your answer-
oR
OCCUPATION
NAME
Have you built other kits?
APPLICATION:
Yes
Hobby
Radio /TV Service
Education Institution
Industrial II Other
SHIPPING ADDRESS
CITY
No
If yes, what kinds:
STATE
CHECK HOW YOU WANT
ORDER SHIPPED
Best
Way
Parcel Motor
Post Freight
Express
How did you first hear of
What new kits would you like Heath
to bring out?
HEATHKITS?
E
ON EXPRESS ORDERS if station Is in different town than your post office
address, show name of town where shipment should be sent:
TOWN
o
-
STREET
ADDRESS
MAIL ZONE STATE
©
ORDER
-0051
IF
QUANT.
MODEL
SECTION A
E
be shipped only by Express
or Motor Freight.
PRICE
EACH
O
Total
amount
cash order.
Add 3% sales tax
PARCEL POST orders should include postage for weight
shown. Often orders for two or more kits can be shipped in a
larger single carton. On orders involving several kits, allow for a
few more pounds total shipping weight. Excess postage will be
promptly refunded.
EXPRESS and MOTOR FREIGHT ORDERS should not
include transportation charges -they will be collected at time of
delivery.
Y.
IMPORTANT. Please use
a separate sheet for all correspondence. It will speed your order and assure a prompt reply to your
letter.
SECTION
CASH ORDER
KIT DESCRIPTION
SEE REVERSE SIDE for time payment details.
TIME PAYMENT ORDERS will
Magazine
Recommendation
Other
STATE
THIS IS YOUR FIRST ORDER TO US, please check here
Catalog
Trade Show
on all deliveries In
the State of Mich.
Amount for parcel
post.
Do not remit for
TOTAL
co
B
TIME PAYMENT
.___o
G
ft--'
d
Lr
3
EACH
TOTAL
Total
amount
time pay order
O
Add 3% on total
order on all deliveries in Michigan.
TOTAL
express charges.
Amount due Heath
from previous order.
TOTAL AMOUNT
Remitted.
Ship C.O.D.
DOWN PAYMENT
(at least 10% of
total)
UNPAID BAL.
(total order less
down payment)
All prices quoted are Net F.O.B. Benton Harbor, Michigan.
All prices subject to change without notice.
Orders from FPO's, Canada and APO's must
by full payment including postage.
be accompanied
Time Payment Plan available in Continental United States and the Hawaiian
Islands only on orders having cash value of $90 or more. On Time Payment
Orders be sure to complete the Time Payment Plan Application on reverse side.
Heath's Easy Time Payment Plan
Time Payment Plan available only on orders having cash price of $90.00 or more.
Available in the Continental United States and the Hawaiian Islands only.
In order to assure prompt shipment of your new Heathkit under the
EASY PAYMENT CHART
Time Payment Plan, please observe the following instructions.
First fill out section "B" of the Order Blank on the reverse
side of this sheet, designating the Heathkits you wish to
buy. If your order totals $90.00 or more, you may use the
Time Payment Plan.
©
©
Up To
Unpaid
Balance
Carrying
Charge
less than $50
$ 50.01.60
$ 5
Insert the amount of your down payment in the Time
Payment Agreement below (at least 10% of your total
order). A larger down payment reduces carrying charge
and monthly payment.
Refer to the amounts on the Easy Payment Chart which
correspond to the unpaid balance on your order (total
price of order less down payment). From this chart enter
your monthly payments on the Time Payment Agreement.
Sign your Time Payment Agreement in ink with your usual
signature, and fill in the credit statement completely.
O
Monthly
Payments"
Unpaid
Balance
12
$
Carrying
Charge
12
Up To
Monthly
Payments
$18
$17
19
18
6
6
$170.01 -180
180.01-190
60.01 -70
7
7
190.01 -200
20
19
70.01 -80
8
8
200.01 -210
21
20
80.01 -90
9
9
210.01-220
22
21
90.01.100
100.01 -110
110.01.120
10
10
220.01 -230
23
22
11
11
230.01 -240
24
22
12
11
240.01 -250
25
23
120.01 -130
13
12
250.01 -260
26
24
130.01.140
14
13
260.01-270
27
25
140.01 -150
15
14
270.01 -280
28
26
150.01 -160
16
15
280.01 -290
29
27
160.01.170
17
16
290.01 -300
30
28
5
All
monthly payments are for amount shown except for last
payment which is for the odd amount remaining due.
Send this application and your down payment to Heath
Company, Benton Harbor, Michigan.
WRITE FOR FURTHER INFORMATION IF YOU WISH TO ADD ON TO YOUR PRESENT ACCOUNT
TIME PAYMENT AGREEMENT
Please answer all questions fully to help establish your credit promptly. Write your order on the reverse side.
NOTE: Time payment agreement cannot be accepted from persons under 21 years of age. If you are under 21, have this form filled out by a person
of legal age, regularly employed or engaged in business. He can make the purchase for you, and will be responsible for payment.
TO: HEATH COMPANY
BENTON HARBOR, MICHIGAN
on the Easy Payment cost of the equipment on the reverse side. will pay $
Enclosed is a deposit of $
each month to you at the above address starting 30 days after shipment, until the total time payment price is paid.
Title to and right of possession of said equipment shall remain with you until all payments have been made. Upon default on any payment due on
this contract, the full amount unpaid hereon, at your option, shall become immediately due and payable and you may either hold me liable for said
amount or repossess the equipment. If you shall repossess, all payments made may be retained as rent for the use and depreciation of said equipment.
The loss, injury or destruction of the equipment after have received it shall not operate as payment or in any manner release me from any obligation
hereunder.
If this order is not accepted, you shall refund the down payment with notice of non -acceptance. Acceptance shall be effected when the equipment
designated on the reverse side hereof is shipped to me. certify that all statements in the Credit Statement set forth below are true and complete and
are made for the purpose of obtaining credit. This contract is to be governed by the laws of the State of Michigan.
I
I
I
Sign Here
Enter Date
CREDIT STATEMENT
(IMPORTANT: Please fill in completely. Omissions and errors cause delays.)
Military
FULL NAMF
Serial No
(if serviceman)
Age
(Print)
No of Children and names
WIFE'S NAME
(Print)
City
Residence
Own or Buying
Rent
Live with Parents
No. of Rooms
How Long
State
Paid Monthly
Phone No
$
Landlords Name f If Owned 1
%Mtg. Held By
and Address
Previous
Address
Previous
Address
How Long
(If
How Long
less than 3 years at present address)
Previous
Landlord
Address
Position
Previous
Employer
Dept or
Badge No
How Long
Salary
3
years at present employment)
Phone
Address
Employer
Dept. or
Badge No
How Long
Salary $
Total
Family Income $
CREDIT REFERENCE (Give Your Bank and 2 Merchants, Firms or Finance Companies with whom you do or have done business.)
Type of
Account
Address
Your Bank
First Credit
Present
Balance
Present
Balance $
$-
Address
Reference
Second Credit
Reference
Nearest Relative
$
How Long
Address
(If less than
Wife's
Position
Other IncomeGive Details
Business
Phone No
_Address
Employed by
Address
Address
(Do not list those with whom you are living)
Monthly
Payment $
Monthly
Payment $
Relationship
H E AT H K I T
)
By Daystrom
"Q" Meter KIT
FEATURES
Variable oscillator permits testing components at normal operating
frequencies (150 KC- I8MC1.
Large 43/2" meter mounted in slanted panel for easy reading.
Pre -wound RF coils -all sheet metal formed and punched.
445O
MODEL
No special equipment required for calibration -test coil furnished.
QM -1
GALS
SPECIFICATIONS
Frequency
Inductance
150 kc-18 me on 4 banda.
1
microhenry to 10 millihenrya.
4
250 Full
Capacitance
Actual 40 mmf -450 mmf
Effective 40 mmf-400 mmf
Vernier
3 mmf.
Tubes
1- 12AT7,1- 6AL5,1- 12AU7,1 -6X5,
scale
1
or
2.
t
1
The Q Meter is not just a "prestige" instrument to be dusted off
each morning when opening the shop or lab. It is fully capable of performing many tasks in a matter of minutes that ordinarily require
considerable mechanical and mathematical dexterity. Originally
a Q meter was out of financial reach of the average service shop but
now Heathkit ingenuity has brought it into line.
Suspected components and parts being developed or manufactured can be tested at frequencies at which they normally are
used (150 kc to 18 mc). Wide ranges of inductance, capacitance and
Q will cover practically all values encountered. All indications are
read directly on a large 4% ", 50 microampere, panel- mounted meter.
-0D3/V R150.
Power
105 -125 Volta AC, 50-60 cycles, 30 watts.
Dimensions
8" high, 17" wide, 6" deep.
Surprisingly easy to use, the model QM -1 will take the guesswork
out of your electronic efforts.
The Heathkit Q Meter uses a 12AT7 oscillator with pre-wound
coils to obtain the full frequency range on four bands. Oscillator
output is metered to provide constant injection. A complete VTVM
circuit is used as a resonance indicator, using a 6AL5 twin diode
and a 12AU7 VTVM amplifier. Voltage regulated and transformer
operated power supply utilizes a 6X5 full wave rectifier and an OD3
regulator tube. All other components are of the highest quality.
Behind the attractive charcoal gray panel with white lettering is a
well laid out and factory- formed chassis. No "extras" are required
to build or operate this instrument. A special test coil is provided
for calibration purposes. Shpg. Wt. 14 lbs.
MAIL ORDER AND YOU!
The Heath Company is strictly a Mail Order firm and specializes in
sales directly between consumer and factory. Since this is not
merely a sideline with us we are geared for fast, efficient order
handling. Years of experience have developed new methods of
handling orders and material to give you the best service possible
yet each order is still given personal attention. Factory -to -you
sales also assure you of getting the latest type equipment available
instead of outdated equipment collecting dust on distributor
shelves. As a further saving, you pocket the middleman's profit. We
stand behind our product so your satisfaction is guaranteed.
-
HEATHKiT
By Daystrom
VARIABLE VOLTAGE REGULATED
Power Supply KIT
FEATURES
DC output variable from 0 to 500 volts.
Large 4 /3" meter monitors output voltage or current.
$355
Regulated
O
MODEL
PS -3
output-Low -ripple- Convenient
Provides filament voltage of 6.3 VAC at 4 amperes.
Professional performance and appearance.
SPECIFICATIONS
Output
Continuously variable from
Regulation
(With 117V AC Line)
Meter
Linear from 0 to 10 ma at 450 volts output
Linear from 0 to 20 ma at 400 volts output
Linear from 0 to 40 ma at 350 volts output
Linear from 0 to 70 ma at 300 volts output
Linear from 0 to 100 ma at 250 volts output
Linear from 0 to 130 ma at 200 volta output
41/2" streamlined case, 1 ma full scale,
0-500V
0 to 500 volts no load
o
1»t111
1
105 -125V AC, 50-60 cycles, 90 watts
Dimensions
81"
Shipping Weight
17 pounds
high, 13" wide, 7" deep
Experimenters and those involved in the design of electronic equipment, or new circuits, will find the PS -3 invaluable in their work. This
unit eliminates the need for building up a separate power supply for
each new circuit tried. It supplies DC plate voltage and AC filament
voltage. The DC output is continuously variable from 0 to 500 volts
no -load depending on setting of voltage control on the front panel.
The voltage is indicated on the large easy -to -read 4%" panel meter,
which also indicates current drawn by the load. A panel switch is
provided for voltage or current readings. The PS -3 provides up to 10
6
1
o
6ó
DC, 0 -200 ma DC
1
Power Requirements
HEATHKIT
JIM
-5V4G rectifier, -6X5GT rectifier, 2 -0A2
regulator tubes, 2 -1619 control tubes,
1-6SJ7 control amplifier
Tubes
operation.
1111
ma at 450 volts DC or up to 130 ma at 200 volts DC. Current progressively increases as voltage is lowered. Provision is also made for 6.3
volts AC at up to 4 amperes for filaments, with separate terminals
provided on the front panel.The output terminals are insulated from
ground so it may be used for AC -DC work. Voltage regulation is excellent, and a convenient standby switch is provided in addition to
the on -off power switch. The PS -3 features rugged, well -rated corn ponents throughout. Once you use a power supply like this one,
you'll want one for your own work bench, Shpg. Wt. 17 lbs.
-VOLT AND 12 -VOLT
Vibrator Power Supply
KIT
Now you can obtain either a 6 -volt or 12 -volt vibrator power supply in kit form. These
little power supply kits were designed to replace the power supplies of receivers,
small public address systems, or even miniature transmitters, so that they can be
used with conventional 6 or 12 volt batteries. They are ideal for use in boats, automobiles, light aircraft or in many field applications. Each unit provides 260 volts DC
output at up to 60 miliamperes. More than one power supply of the same model may
be connected in parallel for increased current capacity at the same output voltage!
Vibrator frequency is approximately 115 CPS, and each power supply measures
only 4%" H. x 4" W. x 3 %" D. Everything is provided, including vibrator transformer,
vibrator, tubes and filters. Easy to build in just a few hours. Shpg. Wt. 4 lbs.
6 -Volt
Model VP -1 -6
12 -Volt
Model VP -1 -12
$795 each
H
EAT H K IT
By
Daystrom
ELECTRONIC
Ignition Analyzer KIT
FEATURES
Checks ignition system electronically with engine in operation.
Displays ignition waveform on cathode-ray-tube--quickly indicates defect.
Use to locate ignition trouble or to adjust for best performance.
Easy -to- build -simple to operate.
A wonderful new tool for the
$5995
MODEL
IA -1
auto mechanic or auto hobbyist.
SPECIFICATIONS
RPM Range...
...400-5000.
Display Shows:
Directly
o
Indirectly
Screen Size
Voltage across breaker points.
Current in coil secondary.
3r
X
4'.
Standard Pattern Height:
6 -volt
12 -volt
power for the analyzer!
Since the IA -1 is primarily intended for mechanics who generally
11/2' approximately.
Test Lead Lengths
10 feet each to breaker points and to spark plug
Controls
wire.
Vertical position, intensity, focus, trigger level,
power and left edge position, coarse speed, fine
Tube Complement
Power Requirement
Dimensions Overall
Weight of Instrument
Shipping Weight of Kit
Here is a wonderful new tool for engine mechanics, tune -up men,
and auto hobbyists. It is ideal for the service and analysis of ignition
systems. The IA -1 traces the dynamic action of voltage in an ignition
system on a fluorescent cathode - ray -tube screen. Since the waveform produced is affected by the condition of the coil, condenser,
points, plugs, and ignition wiring. It can be analyzed, and used as
a "sign- post" to ignition system performance.
For example, this analyzer will show the existence of such conditions as inequality of spark intensity, a poor spark plug, defective
plug wiring -and will even identify the offending plug or wire. Also,
it will detect breaker-point bounce, an open condenser, or will allow
the setting of dwell -time percentage for the points. These are a few
of the most obvious applications. More subtle wave characteristics
will show other ignition system performance factors, as experience
is gained by the operator. The IA -1 is simple to use, with a minimum
of controls -yet is completely flexible for all types of internal combustion engines where breaker points are accessible. Use it on
automobiles, boats, aircraft engines, etc.
An important feature of this instrument is its ability to check the
dynamic performance of the ignition, with the engine in operation
(400 to 5,000 RPM). It will show the complete engine cycle, or just
one cylinder. The IA -1 is especially helpful in locating stubborn
defects which may show up only when the vehicle is in motion and
under load, if a vibrator -type converter is used to supply 115 VAC
1' approximately.
speed.
5BP1, 1V2, 6X4, 6AL5, 12AX7, (3) - 12AÚ7.
105 -125 volts AC, 50/60 cycle, 35 watts.
61/2' x 11' X 20e.
16 pounds.
20 pounds.
have not had previous experience with instruments of this type,
special attention has been given the construction manual. Easy to
understand step -by -step instructions are provided as well as plenty
of detailed drawings showing the exact placement and value of
each component. All components are marked as to their value for
easy identification. A wiring harness is also supplied, greatly simplifying the wiring procedure and also gives a professional appearance to the wiring. The IA -1 is ruggedly constructed. All chassis
components are made of heavy -gauge metal and an all -steel case is
provided to withstand rough usage. The cathode ray tube is protected by a sheet of clear plastic material. The front panel is attractively screened with the function of each control clearly marked.
The controls consist of: vertical position, intensity, focus, trigger
level, power and left edge position, coarse speed, and line speed.
Two test leads are supplied, each ten feet long, to reach the breaker
points and spark plug wire. The IA -1 can be conveniently located
either on a table next to the engine or can be placed on the fender
for easy viewing. Information on how to use the analyzer is also
given in the construction manual, such as how to connect it to the
engine under test, and what to look for in the waveform obtained.
Examples are given showing the normal waveform and the waveform obtained on a faulty engine. As the operator continues to use
the IA -1, operation of the controls will become second nature, as
will his interpretation of the waveforms. This easy -to -build instrument will help you make faster and more efficient engine tuneups or
repairs. Shpg. Wt. 20 lbs.
H E AT H K I T
By Daystrom
Band
Broadcast
RADIO KIT
FEATURES
Can be used as receiver, tuner, or phono amplifier.
Efficient, rod -type built -in antenna provides high sensitivity.
$1895
MODEL BR -2
(less cabinet)
High -gain IF transformers and miniature tubes for excellent performance.
Transformer operated power supply for safety and efficiency.
Slide -rule dial
-5 2" PM speaker.
SPECIFICATIONS
Radio
Tuning Range
IF Frequency
Antenna
Speaker (Included)
Tuner Operation Output
Phonograph Input
Tube Complement
Power Requirements.
Dimensions
550 kc to 1620 kc.
455 kc.
Built -in High Sensitivity Rod Type.
51/=" PM, 4-ohm Voice Coil.
High impedance to any amplifier input with resistance of 100,000 ohms or more. 110 V outlet
provided for amplifier, phono player, etc.
1 megohm high impedance for optimum performance with any good quality crystal or ceramic
phono pickup.
1 --5Y3 Rectifier.
1 -12A6 Beam Power Amplifier.
A.V.C. and Audio Amplifier.
1 -12AV6 Detector
1 -12BA6 IF Amplifier.
1 -12BE6 Pentagrid Converter.
105 -125 volts, 50-60 cycles, AC, 40 watts.
111/2" wide, 5 %" high, 63/4" deep.
If you have ever had the urge to build your own radio receiver, the
outstanding features of this popular Heathkit deserve your attention.
Designed as a completely useful radio construction project, and yet
capable of constant daily performance, the Heathkit BR -2 is designed especially for easy construction by the beginner without
sacrificing quality or performance in any way.
Your success is assured by the completely detailed information
contained in the construction manual. Not only does the manual
outline simple, easy -to-follow, step -by -step assembly procedure, but
a basic explanation of circuit theory is incorporated as the work
progresses and the receiver develops at your finger tips. This spe-
cially prepared construction manual represents a basic radio education course in itself and is of particular use to novices and students.
Large pictorial diagrams and schematic diagrams can be pinned
over the work bench during construction. The manual even contains
information on resistor and capacitor color codes, soldering techniques, use of tools, etc. Tunes from 550 kc to 1600 kc and features
a transformer operated power supply for safety of operation. High gain miniature tubes, sharply tuned IF transformers and a new rod type built -in antenna, result in high sensitivity, good selectivity, and
unusually fine tone quality. This unit can be wired for use either as
a receiver, tuner, or phono amplifier. Shpg. Wt. 10 lbs.
Cabinet: This attractive plastic- impregnated fabric covered plywood cabinet is available for the BR -2 Receiver. Complete with
aluminum panel, flocked reinforced speaker grille, and protective
rubber feet. Shpg. Wt. 5 lbs. Part no. 91 -9A. $4.95
HEATHKIT
Crystal Radio
KIT
This crystal radio is just the ticket for construction by young people interested in radio or electronics
-yet it is definitely not a toy. Employs high -quality standard components throughout. It is even
usable as an AM tuner in high fidelity applications.
Covering from 540 to 1600 kc, the CR -1 has two high -Q tank circuits that employ ferrite core coils
and conventional air tuned capacitors. Capacitors are tuned individually to the desired station. Tne
receiver is most attractively styled in a black bakelite case. IJses a sealed germanium diode for
detection -no critical "cats whisker" adjustment. Includes a pair of high impedance earphones.
Requires no external power. Could prove extremely valuable for emergency reception of civil defense
signals, should there be a power failure. The construction manual provides the builder with the
basic fundamentals of signal reception so that he understands how the crystal receiver functions.
An interesting and valuable "do -it- yourself" project for all ages. Shpg. Wt. 3 lbs.
MODEL CR -1
$795
H
ATHKtT
By Daystrom
TRANSISTOR
Portable Radio KIT
FEATURES
Six name -brand (Texas Instrument) transistors plus two diodes.
High- quality 4" x 6" speaker for "big set" tone.
Long battery life (500 -1000 hours) with standard flashlight cells.
Unbreakable molded plastic cabinet with "formed -in" handle.
$3495
MODEL XR -1
(less batteries, with cabinet)
SPECIFICATIONS
Tuning Range
Cabinet
538 -1680 kilocycles.
Size..
9"Lx8"Hx33/4 "D.
Loudspeaker
4" x 6", 1.47 oz. magnet.
Batteries...
6 Size
Unbreakable plastic with "formed -in" handle.
Holiday Gray with Gold Trim.
"D" flashlight
cells (not included).
500 -1000 hours average use.
Transistors
Heath engineers set out to develop a "universal" AM radio, suitable
for use anywhere. Their objective was a portable that would be as
much "at home" inside as it is outside, and would feature top
quality components for high performance and long service life. The
model XR -1 is the result of these efforts.
Six name -brand (Texas Instrument) transistors were selected for
good sensitivity and selectivity. A 4" x 6" PM speaker with heavy
magnet was chosen to insure fine tone quality. The power supply
was designed to use six standard, size "D" flashlight cells because
they are readily available, inexpensive, and because they afford
extremely long battery life (between 500 and 1000 hours). This power
supply also eliminates shock hazard since highest voltage in set is
only 9 volts. Unbreakable molded plastic was selected for cabinet
material because of its durability and striking beauty.
These important features make the XR -1 equal to the finest transistor portable radios you can buy, yet it sells for less than many
of the novelty portables that provide only minimum performance.
The Heathkit XR -1 Transistor Receiver emphasizes top performance at a low kit price. It features class B push -pull output for maximum efficiency and best battery economy. It costs you no more to
operate from batteries than what you would pay for operating a
small table -model radio from the power line. Built -in rod -type
antenna allows excellent reception in all locations. The IF circuits
are prealigned so the receiver is ready to operate as soon as construction is completed. Receiver can be peaked up on station if
desired for maximum efficiency by following simple instructions in
manual, and an alignment tool is furnished. No special alignment
equipment is required. The circuit is compact and efficient, yet
components are not excessively crowded, adding greatly to the ease
of construction.
6;
-2N252
1-2N238
1
Weight with Batteries
434 pounds.
Shipping Weight
6 pounds.
1
-2N253
2 -2N185
-2N254
plus 2 diodes.
1
Use the XR -1 as an automobile radio, for fishing and camping
trips, at the ball park, on vacation, or at the beach. Perfect for a
civil defense standby set, and a reliable source of signals in case of
power failure. It represents a new concept in design, in that you get
convenience and portability without the usual sacrifice in perform-
ance.
The attractive, light- weight, plastic cabinet is unbreakable with
a "formed -in" handle for ease of carrying. It resists scuffs, peeling,
chipping, chemicals and grease. Cabinet dimensions are 9" L. x 8"
H. x 3 %4" D. Comes in holiday gray with gold- anodized metal speaker
grille. Compare this portable, feature -by- feature, to all others on the
market, and you'll appreciate what a tremendous dollar value it
represents! Shpg. Wt. 6 lbs.
HEATHKIT
By
Daystrom
ELECTRONIC
Analog Computer KIT
MODEL ES -400
CABINET
FEATURES
One standard reference supply for amplifier DC voltages.
FULL COMPUTER
GROUP C
A nulling meter for accurate setting of computer voltages.
$94500
A unique patch -board panel which enables the operator to "see" his
computer block layout.
30
coefficient potentiometers
-2 -IO turn
precision auxiliary potentiometers.
Write for further information
TYPICAL GROUP
C $945
CONSISTS OF
One
One
Three
One
Fifteen
One
One
Three
Two
One
One
ES 2
ES 50
ES 100
ES 151
ES 201
ES 400
ES 401
ES 405
ES 447
ES 450
ES 505
a highly flexible and accurate analog computer, designed to fill
requirements not presently met by any commercial computer. It is an instrument suitable for use as a design tool in industry and universities. An
advance "slide rule" which permits engineering or research personnel
to simulate equations or physical problems electronically and save many
hours of calculation or experimentation. Ideal for solving practical problems in industry, and equally valuable for research, or instructional demonstrations, in colleges and universities.
Because it is a kit, and the labor and overhead cost found in present day
computers are eliminated, the Heath computer can be obtained for use in
situations where a computer was ruled out in the past because of cost.
Definitely not a "gadget" but a high quality, flexible, high -accuracy device
designed to work for you.
The ES-400 computer cabinet houses power supplies, amplifiers, and
computing components. It includes an accurate dividing network which
introduces voltages to a null meter. By means of a switch, a potentiometer
may be connected to the meter and read. This eliminates inaccuracy due
to potentiometer non -linearity, or loading.
The dividing network and meter may also be used to set up the initial
conditions, to offset bias diodes, and to read any voltage which appears
at the amplifier. The meter may be switched to any of the fifteen amplifiers
so they may be set to give full scale deflection of t2, 20 and 100 volts. The
board also has the plus and minus 100-volt standard available, which is
used in dividing the network.
The Heathkit Analog Computer is available in three different groups at
three different price levels, depending on the number of amplifiers required, etc. The basic computer group, with five amplifiers, sells for only
$495.00, there is a medium group for only $775.00, and the full computer,
with fifteen amplifiers and other extras is priced at only $945.00.
This is
FULL COMPUTER KIT -GROUP
Amplifier power surply kit
Reference power supply kit
Initial condition power supply kits
Relay power supply kit
Operational amplifier kits
Cabinet kit
Voltage regulator transformer kit
Patch cord kits
Coefficient potentiometer kits
Auxiliary coefficient potentiometer kit
Repetitive oscillator kit
OTHER GROUPS AVAILABLE:
BASIC COMPUTER KIT -GROUP A $495
MEDIUM COMPUTER KIT -GROUP B $715
MODEL ES -2
AMPLIFIER
POWER SUPPLY
MODEL ES -100
INITIAL CONDITIONS
POWER SUPPLY
ES -600 FUNCTION GENERATOR KIT
MODEL ES -151
RELAY
POWER SUPPLY
MODEL ES -201
AMPLIFIER
..`I
1
The model ES -600 Function Generator is designed
to be used with the Heath Analog Computer. The
unit approximates curves or functions by straight
line segments, five in the plus X direction and five
in the minus X direction. The break voltage and
slope of the segments are set by controls on the front panel. Power requirements are: +250 V at 16 MA; -250 V at 16 MA; 117 V AC at 100 MA.
FREE FOLDER:
MODEL ES -505
REPETITIVE
OSCILLATOR
Complete details concerning the Heathkit Electronic Analog Computer Kit
are available free on request. This folder explains exactly what each computer group consists of, and explains the function of each element in the
group. Send for your free copy now and get the complete computer story.
HEATHKIT
By Daystrom
PROFESSIONAL
Radiation Counter KIT
FEATURES
Completely modern design for maximum sensitivity and reliability.
Both visual (4%" meter) and aural (panel mounted speaker) indicators
for radiation level.
Meter calibrated in CPM and MR /HR. Four measuring ranges.
$7995
MODEL
Safe, radio- active sample provided for calibration.
RC -1
Employs 900 volt bismuth tube in beta /gamma sensitive probe.
SPECIFICATIONS
Time Constant
Ranges
Probe....
Batteries...
Tube Complement
0.5, 1, 5 and 10 seconds.
0-100, 600, 6000 and 60,000 counts per minute.
0 -.02, .1, 1, and 10 milliroentgens per hour.
Satin aluminum and chrome plated steel probe
contains extra sensitive type 6306 Bismuth geiger
counter tube.
1 -671/2 volt B battery (approximately 200 hours
to 40 volt end point), intermittent operation.
2-11/2 V A batteries (approx. 20 hours to 1V end
point), intermittent operation.
1
1
-3V4
Amplification, pulse
shaping and counting
tubes.
-5841 corona regulator tube.
-6306 Bismuth counter tube.
2 -11/5
1
1
1
Dimensions
a deluxe geiger
counter priced far below comparable units. You save by "building
it yourself ". Complete step -by -step instructions are combined with
giant -size pictorial diagrams showing the exact placement and value
of each component.
The RC -1 provides high sensitivity with ranges of 0 -100, 600, 6,000
and 10 milliroentgens per
60,000 counts -per- minute, and 0 -.02, .1,
hour. A 900 -volt bismuth tube is employed in a beta /gamma sensitive probe. Probe and 8 -foot expandable cable are included in kit
price, along with a safe radiation sample used for calibration. Response to radiation is indicated on a large 4%" panel meter and on
a self contained speaker which produces beeps or clicks on the
most sensitive range. The meter is calibrated in CPM or MR /hour.
The Heathkit model RC -1 Radiation Counter is
1
-2N109 transistor (oscillator).
High x 61/2' Wide x 5' Deep.
9W
The prebuilt "packaged" high voltage power supply has reserve
capacity above the 900 volt level at which it is regulated. A separate
control enables instant choice of time constant, from '/z to 10 seconds. Merely changing the regulator tube type would allow use of a
scintillation probe if desired for extra sensitivity. Provision is made
for use of an external meter when prospecting from a moving vehicle. The RC -1 employs five tubes (plus a transistor) to insure stable
and reliable operation. In addition to its value in prospecting for
uranium ore the RC -1 has found extensive use in radiological laboratories, and for civil defense to detect radioactive fallout, or other
unknown radiation levels. The RC -1 fulfills the requirements of the
seriously interested individual who wants a prospecting tool on
which he can rely. Kit price includes batteries. Shpg. Wt. 8 lbs.
SERVICE DEPARTMENT
..
.
An extra assurance of successful kit construction is the availability of our
consultation service or service department. You can write for additional
help in case of difficulty, or you can send equipment to our service department for a complete factory check of operation at a nominal fee. Factory trained technicians will quickly spot a wiring error or mistake and correct
it. Any damaged components are replaced with original components, and
the completed instrument is checked to make sure it is operating as specified. This includes alignment where necessary.
This department is maintained only for those few cases where some
difficulty might be encountered with a Heathkit after it has been built by
the customer. Although you may never have occasion to use this service,
it is reassuring to know it is available and that the Heath Company will
stand behind each and every kit sold.
HEATHKiT
By Daystrom
Enlarger Timer KIT
FEATURES
Easy -to -read, linear dial scale-front -panel calibrate control.
Compact plastic case resists photographic chemicals.
Handles up to 350 watts at enlarger or safelight receptacles.
Timer does not have to be reset after each cycle.
MODEL
ET -1
All- electronic circuit for greater accuracy.
SPECIFICATIONS
Timing Range
Controls
minute, continuously variable.
Off-On/Timing
Receptacles
Calibration.
Enlarger and Safelight 350 watts maximum each.
0 -1
Focus /Print
Tube
Power Requirements
Cabinet Size
Kit Net Weight
Kit Shipping Weight
Construction Time
1-6D4.
105 -125 V 50-60 Cycle AC, 3 watts.
6i/e" long
plastic.
1i/2 lbs.
x
334" wide x 2° deep Non -corrosive
3 lbs.
1
Evening.
The model ET -1 is an easy -to -build electronic device to be used
by amateur or professional photographers in timing enlarger operations.
The calibrated dial on the timer covers O to 1 minute, in five -second
graduations. The continuously variable control allows setting of the
"on" cycle of your enlarger, which is plugged into a receptacle on
the front panel of the ET -1. A "safe" light can also be plugged in
so that it is automatically turned "on" when the enlarger is turned
"off". An internal relay handles up to 350 watts at enlarger or safe
light receptacles.
The all- electronic timing cycle assures maximum accuracy. To
start the timing cycle the timer dial is first set to the desired number
of seconds and the spring- return lever switched to "print ". The
timer does not have to be reset after each cycle, merely flip the
switch to print, to repeat the timing cycle. When the lever switch is
moved in the opposite direction to the focus position the enlarger
will remain "on" for focusing and masking A control is provided
for the initial calibration so that the timing cycle will correlate with
the panel calibration. The ET -1 requires only 3 watts for operation
so very little heat is generated. This results in long life of the components and no undue heating of small dark rooms. Once the timing
cycle is started, the operator is free to do "dodging" or process
already- exposed prints without fear of over -exposure. The timer is
housed in a compact plastic case that will resist attack of photographic chemicals, Its small size enables it to be placed almost anywhere at the enlarging position. Top -quality components are used
throughout to insure many years of troublefree performance. This
timer can be built in just one evening. Shpg. Wt. 3 lbs.
HEATHKIT
Battery Tester
KIT
The model BT -1 is a special battery testing device that actually "loads" the battery (draws current
from it) while it is being tested. Weak batteries often test "good" with an ordinary voltmeter, but the
built -in load resistance of the BT -1 automatically draws enough current from the battery to reveal its
true condition. Simple to operate, and no complicated meter readings to interpret.
To use the model BT -1 just set the voltage selector, connect the leads to the battery, and read the
condition of the battery on the three -color "good -weak- replace" scale. Test batteries in a way your
customers can understand and stimulate battery sales. Ideal for testing dry cell hearing aid, flashlight,
portable radio, and model airplane batteries. Provides test ranges of 0 -15 volts and 0 -180 volts. A slide
switch provides for either 10 ma or 100 ma load, depending on whether you're testing an A or B battery.
Not only determines when battery is completely exhausted, but makes it possible to anticipate failure
by noting weak condition. Shpg. Wt. 2 lbs.
MODEL
BT -1
$850
A
Dr
HEATHKIT
By Daystrom
Grid Dip Meter KIT
FEATURES
Prewound coil kit and rack.
Continuous frequency coverage from
2
MC to 250 MC.
Compact -Simplified one -hand operation.
500 microampere meter
$1995
MODEL
GD -1B
variable sensitivity control.
Jack for headphone monitoring-precalibrated dial scale.
SPECIFICATIONS
2 -250 me using 5 plug -in coils supplied
Frequency Range
with kit
(350 kc -2000 kc with additional coil set.)
Meter Movement
500 microampere.
Circuit.
6AF4 or 6T4 high frequency triode in a Colpitts
oscillator circuit.
Radio amateurs and servicemen have proven the value of this grid
dip meter many times over. Indispensable in the service shop, the
laboratory, or the ham shack, for locating parasitics, spurious
oscillations, neutralizing, determining RF circuit resonant frequencies, aligning IF stages, traps and filters, and correcting TVI.
Can also be used to roughly determine capacitor and inductance
values, and to provide a relative indication of power in transmitter
stages. Originally the grid dip meter found its greatest application
in the amateur radio field, but now it is used extensively in radio
and TV servicing and in experimental laboratories.
With the oscillator not energized, the instrument acts as an absorption wave meter on high signal level circuits. Plugging headphones into the phonejack further extends the instrument's usefulness through operation as an oscillator- detector for determining
the frequency of other oscillator circuits through zero beating.
Many factors were considered in the design of this outstanding
instrument, resulting in a grid dip meter that is packed with de-
Power Supply
Transformer operated with selenium rectifier.
Physical Specifications
Length 7", Width 2%", Depth 31/4".
Power Requirements
117 Volts,
50/60 cycles at 5 watts.
sirable features. Notice that one hand operation is possible. The
grid dipper may be held in one hand and tuned, leaving the other
hand entirely free for making circuit adjustments. A variable sensitivity control assures adequate range of sensitivity throughout the
entire frequency range. Plug -in coils can be quickly changed, and
cover the frequency range from 2 me to 250 me continuously.
Spare, blank dial scales are supplied for the builder who wishes to
hand -calibrate this particular instrument, or desires maximum accuracy at specific frequencies.
The GD -1B incorporates its own power supply and is transformer
operated from the power line. Shpg. Wt. 4 lbs.
ADDITIONAL PLUG -IN COILS
. . .
A set of two additional plug -in coils is available for the GD-1 B. This
set is the 3 -prong mounting type and provides continuous extension of low frequency coverage down to 350 kc. Dial correlation
curves are included. Shpg. Wt. 1 lb. Na. 341 -A. Only$3.00 complete.
401
HEATHKIT
12"
Utility Speaker
Hams, servicemen, and high fidelity enthusiasts will find many varied applications for this 12"
utility speaker. Use it to replace a small speaker in a radio or TV set to obtain better tone quality,
or as an auxiliary speaker for testing purposes. It can be used in a hi -fi or public address system
to pipe sound into other rooms, etc. The speaker will handle up to 12 watts with a frequency
response of
5 db from 50 to 9,000 CPS. Speaker impedance is 8 ohms and has an eight
ounce magnet. Well worth the low Heathkit price. Shpg. Wt. 7 lbs. No. 401-6. $7.50.
By Daystrom
COMMUNICATIONS- TYPE
All Band Receiver KIT
FEATURES
Covers 550 KC to 30 MC in four bands.
Slide -rule dial -electrical band -spread -ham bands marked.
Slug -tuned coils and efficient IF transformers for good sensitivity and
selectivity.
MODEL AR -3
$2995
Transformer operated power supply for safety and high efficiency.
(lessabinet)
1
SPECIFICATIONS
Frequency Range
Tube Complement
550 kc to 30 me on
1
1
1
Audio Amplifier and Reflex BFO.
Beam Power Output.
1 -5Y3 Full Wave Rectifier.
105 -125 volts AC 50/60 cycles 40 watts.
111/2" wide x 5334" high x 6 %" deep.
12 lbs.
1
Power Requirements
Dimensions..
Shipping Weight
Amateur bands plainly marked
on dial.
four bands.
-12BE6 Oscillator and Mixer.
-12BA6 IF Amplifier.
-12AV6 Second Detector, AVC, First
-12A6
CONTROLS
Phone -Standby -CW Switch
RF Gain Control /AVC On -Off
Antenna Trimmer
AC On /Off-Audio Gain
Band Switch
Accessory Socket
Noise Limiter On /Off
Headphone Jack
Sockets for connecting Heathkit Model QF -1 Q Multiplier on rear of chassis.
General Coverage Tuning
Band Spread Tuning
The Heathkit model AR -3 Receiver features proven circuit design
and physical layout. The net result is good sensitivity and selectivity,
coupled with more flexible overall operation. Performance of the
AR -3 is really outstanding, especially in view of its low kit price.
High Q slug -tuned coils are used in the front end and an antenna
trimmer has been added so that the front end may be peaked to a
particular signal on any of the bands. The coil layout permits easy
alignment from above the chassis. Predesigned oscillator coils result in increased conversion transconductance through the mixer
circuit, and new -type IF transformers allow a better band pass curvi,
and more gain. The tuning capacitor is shock mounted, and the
overall layout eliminates ground loops, shortens important lead
lengths, and makes for easy assembly.
The physical layout of the AR -3 is designed for high circuit efficiency, and for convenience in construction. Frequency coverage
is from 550 kc to 30 me in four bands clearly marked on a slide -rule
dial. The ham bands are also plainly marked. The circuit employs a
12BE6 oscillator and mixer, a 12BA6 IF amplifier, a 12AV6 second
detector, AVC, first audio amplifier, and reflex BFO, a 12A6 beam
power output tube, and a 5Y3 rectifier. The power supply is transformer operated for safety and high efficiency. A band switch eliminates coil changing, and provision is made for main tuning- band spread tuning -phone- standby -CW switch- headphone jack
antenna trimmer -noise eliminator -RF gain control and AF control. Two dial lights are provided to illuminate the tuning dial softly.
-
Accessory sockets are provided on the rear of the chassis for using
the Heathkit model QF -1 Q Multiplier. The accessory socket is handy
also, for operating other devices that require plate and filament
potentials. It will supply +205 volts DC at 15 ma and 12.6 volts AC at
300 ma. Slug -tuned coils allow close tracking adjustments. The BFO
(beat- frequency oscillator) circuit is more stable and delivers greater
audio output when receiving CW signals. The standby switch prevents voltage surges and resulting audio blasting during switching.
Ceramic bypass capacitors have been used freely to reduce stray
coupling in signal circuits. In all, the model AR -3 offers tremendous
improvements over the previous model and is a fine receiver for the
beginning amateur, short wave listener, or for anyone whose listening interest extends beyond the standard broadcast band. No special
antenna is required. Any long wire end fed antenna can be used for
maximum signal pickup. A signal generator is recommended for
final alignment for best results. Shpg. Wt. 12 lbs.
CABINET:
The 91 -15A cabinet for the AR -3 is both attractive and practical. It
provides protection of all components of the completed receiver as
well as improving its appearance. The tone quality of the speaker is
also improved by the cabinet. This pyroxylin impregnated fabric
covered cabinet includes the aluminum front panel, reinforced
speaker grille, and protective rubber feet. Front panel is screened,
indicating function of the various controls. Measures 121/s" W. x 6 %"
$4.95
H. x 7 %" D. No. 91 -15A. Shpg. Wt. 5 lbs.
By Daystrom
"AUTOMATIC"
Conelrad Alarm KIT
FEATURES
Use with any receiver for conelrad alarm.
Automatically turns off transmitter and gives visual signal.
Heavy -duty, 6- ampere relay.
Sensitivity control to adjust to various AVC levels.
MODEL
CA -1
$1395
SPECIFICATIONS:
Tube Complement
2021 thyratron.
AVC Sensitivity
-2
Operating Power
115 volts AC, 60 cycles 7 watts.
volts to
-20 volts.
Power Capability
115 volts AC, 60 cycles 700 watts.
Cabinet Size
7%" wide
Net Weight
3
lbs.
Shipping Weight
4
lbs.
Cv
The model CA -1 Conelrad Alarm Kit is a simple, easy to build device
that will allow you to fully comply with FCC regulations without a
large dollar investment. Use it with any radio receiver (AC -DC,
transformer operated, or battery powered) as long as the receiver
has AVC. When the monitored broadcast station goes off the air,
the Heathkit model CA -1 automatically removes AC power from
your transmitter, and lights a red indicator on the front panel. A
manual "reset" button reactivates the transmitter again. An external alarm device such as a bell, gong, etc. can be used in place
of the transmitter if desired. The CA -1 features its own heavy -duty
six -ampere relay, a thyratron tube to activate the relay, and its own
x 4111,{6"
high
x 41%"
deep.
built -in power supply with transformer isolation. A neon lamp on the
front panel of the conelrad alarm verifies the fact that it is in operation, by indicating the presence of B+ in the alarm circuit. Very
simple to install. Your transmitter plugs into the AC receptacle on
the CA -1, and a cable connects from the conelrad alarm to the receiver AVC circuit. A sensitivity control adjusts to various AVC
levels. Receiver volume control can be turned up or down without
affecting alarm operation. Build the Heathkit "automatic " Conelrad
Alarm Kit in one evening and comply with FCC regulations now!
A list of all Conelrad key stations is given in the construction manual.
Shpg. Wt.
4
lbs.
HEATHKIT
"Q"
MODEL QF -1
$995
Multiplier KIT
The Heathkit Q Multiplier is the kind of device that must be used to be appreciated. It provides
additional selectivity or signal rejection as desired when used with a communications receiver. A
tremendous help on crowded phone and CW bands. The peak or null effect of the Q Multiplier
may be tuned across the receiver's IF bandpass so its operation is more flexible than that of a
crystal filter. The QF -1 may be used with a receiver which already has a crystal filter to obtain two
simultaneous functions. The receiver's crystal filter could be set to peak the desired signal and the
QF -1 to null an adjacent signal. Can be used with any AM receiver having an IF frequency between
450 and 460 kc, that is not AC -DC type. It obtains its power from the receiver with which it is used,
and requires only 6.3 volts AC at 300 ma (or 12 volts AC at 150 ma) and 150 to 250 volts DC at 2 ma.
It is simple to connect with cable and plugs supplied following instructions in the manual. It provides an effective Q of approximately 4,000 for extremely sharp "peak" or "null." Tunes by means
of a convenient tuning knob on the front panel. This Q Multiplier is "top quality" all the way through.
Cabinet measures7%" Wx41%6" H x 4 %" D. Shpg. Wt. 3 lbs.
HEATHKIT
PHONE
&
By Daystrom
CW
DX -100 Transmitter KIT
FEATURES
Phone or CW on 160, 80, 40, 20, 15, 11 and 10 meters.
Built in VFO, modulator, and power supplies. 5 -point TVI
suppression.
Kit includes all parts -tubes hardware- cabinet, etc.
Easy-to- build.
Coils are pre -wound and cable is pre- harnessed.
High quality components are used throughout for reliable
performance.
-
$18950
MODEL
DX -100
SPECIFICATIONS
RF Power
Output
Output Impedance
Output Coupling
100 -125 watts phone, 120-140 watts CW.
50 -600 u (non-reactive).
Pi network (coaxial).
Operation
Crystal -VFO, CW- Phone, Local- Remote.
Band Coverage
160, 80, 40, 20, 15, 11, 10.
85 watts at 300 -3000 cycles.
Audio Output
Tube Complement:
Power Section
Audio Section
RF Section ..
6AL5 bias rectifier.
5V4 low voltage rectifier.
2 -5R4GY high voltage rectifier.
0A2 regulator.
12AX7 speech amplifier.
12BY7 audio driver.
2 -1625 modulator.
6AU6 VFO.
12BY7 crystal oscillator- buffer.
5763 driver.
2 -6146
Power Requirements
Standby
CW
Phone
Cabinet Size
Net Weight
Shipping Weight
parallel power amplifier.
6AQ5 clamp.
115 volts AC, 50 to 60 cycles.
150 watts.
400 watts (intermittent).
450 -600 watts.
20 %s" wide x 13 %" high x 16" deep.
100 lbs.
107 lbs.
This transmitter is a completely proven piece of ham gear. Amateur
radio operators in the field are enthusiastic in praising its performance under actual operating conditions. It provides the latest and
most desirable design features, and combines high quality with
real economy.
The model DX -100 is a completely bandswitching rig for phone
or CW operation on 160, 80, 40, 20, 15, 11 and 10 meters. It has a
built -in VFO, or may be excited from crystals. Crystal sockets are
built in. The easy -to -build kit contains all parts necessary for construction, including tubes, cabinet, hardware, etc. The detailed
step -by -step instruction manual features plenty of pictorial diagrams
for easy assembly. Pi network output coupling allows matching
non -inductive loads from 50 to 600 ohms, and is only one of the
design features of this outstanding performer.
This transmitter employs push -pull 1625 tubes modulating parallel
6146 tubes. RF output is in excess of 100 watts on phone, and 120
watts on CW.
The VFO circuit consists of a 6AU6 tube operating as a clapp
oscillator in the frequency ranges of 1750 to 2000 kc, 7000 to 7425 kc
and 6740 to 6807.5 kc. An 0A2 regulator tube stabilizes the B supply
to the oscillator screen grid.
A 12BY7 tube is used either as a modified Pierce crystal oscillator,
or as a buffer, depending on whether the function switch is on crystal or VFO. The plate circuit of this stage is untuned when operating
160 or 80 meters, slug -tuned to 40 meters for operation at 40, 20, or
15 meters, and slug -tuned to 20 meters when operating on the 10 -11
meter band.
A 5763 tube drives the parallel 6146 final. Pi network interstage
coupling is employed between this stage and the final grid.
The 6AQ5 clamp tube serves to protect the 6146 tubes by reducing
screen voltage automatically if grid drive to the final tubes is removed.
A single 12AX7 tube provides two stages of resistance -coupled
triode speech amplification in the audio section. A 12BY7 driver
provides input voltage to the 1625 modulator tubes, The speech
amplifier and the modulator stages have been designed to restrict
the audio speech range. This provides a "hard hitting" audio
modulation with plenty of punch.
Separate power supplies are used for low-level and high -level
functions. The low voltage transformer contains all the filament
windings, including the filament for the high voltage rectifiers. It
has a tapped secondary to supply voltage for the bias rectifier. A
12 -volt center tapped winding supplies audio and RF stage filaments.
The low voltage supply delivers 360 volts at 150 ma to the low power
audio and RF stages. The bias rectifier voltage is 75 volts. The high
voltage supply provides plate and screen potential for the final RF
and modulator stages. The entire power section of the transmitter
is fused (both sides of the line) at the line plug. All power supply
components, including transformers and chokes are well rated for
their service.
The DX -100 has been "amateur designed" to incorporate all of
the most desirable features for convenient and effective amateur
communications.
High quality parts are used throughout construction for reliability
and service. Notice the aluminum heat -dissipating plate caps, extensive shielding, copper plated chassis, heavy duty "potted" transformers, etc. All these features insure top performance on the air.
LAYOUT: The view above shows the under -chassis layout of the
DX -100. Notice that the parts are not crowded together and that
plenty of "elbow room" is provided . The transmitter is easy -to- build,
even for the beginner. "Unitized" constructional procedure allows
work on chassis plate or other sub - chassis before they are attached
to main chassis frame.
The DX -100 transmitter is easy to build and attractively styled. Assembly is sub -divided into several stages. This allows the construction to proceed smoothly from one section of the transmitter to
another. Sub-units are assembled and then added to the complete
chassis. The chassis is extra -strong 16 -gauge copper -plated steel.
Construction is further simplified by the use of a pre- formed wiring
harness, pre- formed coils, etc.
The VFO dial is illuminated for easy reading under subdued lighting conditions, and the meter is illuminated as well.
A remote control socket is provided on the back chassis apron.
This will provide AC voltage for operating an antenna change -over
switch or a receiver muting relay. Also the circuit can be arranged
to bring audio voltage out to this connector socket for driving an
external modulator, in case the transmitter were used as a driver
for a higher powered rig.
In addition to all the extra features incorporated in this transmitter,
features definitely not expected at this price level, the rig is also
most attractive. Modern cabinet design in two -tone gray and interesting panel treatment with modern knobs lend a real "professional" look to the transmitter. It's the kind of transmitter you will
be proud to display in your ham shack. Needless to say, its performance is very much in keeping with its modern appearance.
Inspection of the "inside" photographs above will give an in-
dication of the high quality parts used in the DX -100. Notice that all
the transformers are of the "potted" type and that other components
are top -notch items selected for their reliability and service. Capacitors are either disk -ceramic or plastic -molded types, except for
the electrolytic units used in power supplies. The aluminum heat dissipating plate caps used on the 6146 tubes are typical of the
"extras" that can be expected in this transmitter. Porcelain and
ceramic insulation is used wherever necessary, and silver -plated,
and even solid coin silver switch terminals are used in critical circuits. The entire chassis and sub -chassis units are copper plated
for better conduction and more effective shielding. Another feature
of the transmitter is its five -point TVI suppression. Pi network inter
stage coupling is employed to reduce harmonic transfer from one
stage to another. Pi network output coupling reduces harmonic
radiation to the antenna. Extensive shielding isolates RF stages and
prevents undersirable intercoupling, All incoming and outgoing
circuits are filtered to keep RF inside the cabinet. Interlocking cabinet seams prevent RF leakage. Even the meter is provided with a
panel shield to prevent RF radiation through the meter hole in the
panel.
Just check over the schematic, and the specifications for this
transmitter, and you'll see what a really outstanding value it represents. Shpg. Wt. 107 lbs.
HEATHKIT
Balue Coil KIT
The Heathkit Balun Coil Kit model B -1 is a convenient transmitter accessory, which has the capability of matching unbalanced coaxial lines, used on most modern transmitters to balance lines
of either 75 or 300 ohms impedance. The design of the bifilar wound coils will enable transmitters
with unbalanced output to operate into balanced transmission lines such as used with dipoles,
folded dipoles, or any balanced antenna system.
The balun coil set can be used with transmitters and receivers without adjustment, over the
frequency range of 80 through 10 meters, and will handle power inputs up to 200 watts.
The balun coil cabinet dimensions are 9" square by 5" deep and it may be located any distance
from the transmitter or from the antenna. Can be mounted inside or outside of the "ham shack ".
A protective cover is supplied with the balun coil set to prevent damage to components by
weather or other causes in outdoor installations. Very easy to build, the B -1 can be put together
in less than an hour, and it will help you get a more efficient match between your transmitter
and antenna. Shpg. Wt. 4 lbs.
MODEL
B -1
$895
H
EAT H K IT
By Daystrom
DX -40 PHONE AND CW
Transmitter KIT
FEATURES
6146 final amplifier for
full
75 -watt
plate power input.
Phone and CW operation on 80, 40, 20,
work output coupling.
15,
11
and
10
meters. Pi net-
Switch selection of three crystals-provision for external VFO excitation.
D'Arsonval movement panel meter indicates final grid or plate current.
AIL ;AMIN&
SPECIFICATIONS
Power Input
Output Impedance
Output Coupling
Operation
Band Coverage
Tube Complement
Power Requirements
Cabinet Size
Net Weight
Shipping Weight
75 watt CW, 60 watt peak controlled
carrier phone.
50 -1000 ft.
Pi network (coaxial).
Crystal -VFO, CW, Phone.
80, 40, 20, 15, 11, 10 meters.
5U4GB Rectifier.
12AX7 Speech Amplifier.
6DE7 Controlled Carrier, Modulator.
6CL6 Crystal Oscillator.
6CL6 Buffer.
6146 Final Amplifier.
117 volts AC, 60 cycles, 175 watts.
13" wide x 81/2" high x 9" deep.
21
lbs.
26 lbs.
The DX -40 is an entirely new transmitter, featuring increased power,
clean keying characteristics and stability made possible by the efficient circuit design. An ideal rig for the novice who intends to operate on phone as soon as he gets his general -class ticket, yet needs
a CW rig in the meantime. Experienced hams also will find the DX40 appealing since it provides the phone and CW facilities desired
in a low -power rig.
The plate power input of the model DX -40 is 75 watts on CW, and
peaks to 60 watts with controlled- carrier phone modulation. It covers
80, 40, 20, 15, 11 and 10 meters with single -knob bandswitching. Pi
network output coupling is employed for easy antenna loading. Pi
network coupling is also featured between the buffer circuit and the
final amplifier thus improving stability and attenuating the higher
order harmonics, reducing the possibility of television interference.
A line filter is incorporated to prevent RF radiation through the
power line. The efficient oscillator and buffer circuit provides adequate drive to the 6146 amplifier from 80 to 10 meters even with an
80 meter crystal. A drive control adjustment provides excellent
maximum to minimum drive requirements. A five -position function
switch provides an extra "tune" position, allowing you to switch
on the oscillator without the final amplifier being on, so the operator
can locate his own signal on the band. Tuning the buffer stage to
proper drive level before the final is on also prevents the possibility
of damage to the final amplifier tube.
The tube lineup features a 6CL6 Colpitts oscillator, 6CL6 buffer,
6146 amplifier, 12AX7 dual- triode speech amplifier, 6DE7 dual triode modulator, and a heavy -duty 5U4GB rectifier. The modulator
circuitry features an audio frequency shaping network allowing a
higher average output level on voice frequencies where it is required. Provision is made for three crystals. A four -position switch
selects any of the three crystals or a jack for external VFO. The crystal
sockets are easily accessible through a "trap door" in the back of
the cabinet. An external VFO (variable frequency oscillator) can
also be used to excite the transmitter for the general or advanced class ham. Power for the VFO is available at a socket on the rear
apron of the chassis.
Top -quality components are used throughout. The transformers
are potted types, ceramic switches are used in the final RF circuits,
all coils are pre -wound, etc. The circuit features liberal shielding
and careful physical placement of components and leads for stable
operation. The circuit design has been extensively tested "on the
air" with excellent reports, assuring you of the best possible performance. Besides being carefully designed both electrically and
physically, the styling of the DX -40 is outstanding. Two large knobs
on the front panel provide smooth antenna and final tuning. Between them is a switch for the easy -to -read front -panel meter with a
D'Arsonval movement that indicates final grid or plate current. The
function switch is at the lower left, providing selection of off, tune,
standby, phone and CW. The drive control is in the center. The key
jack is at the extreme left, and a pilot light is at the extreme right.
Its attractive and professional appearance is in keeping with the
fine operation it can provide for you in your ham shack. You can
build this rig yourself and be proud to show it off to yourfellow hams.
Assembly instructions are complete in every respect. The manual
contains complete step -by -step instructions that are tied -in closely
with large pictorial diagrams, to prevent costly mistakes. Assembly
proceeds smoothly from start to finish even for an individual who
has never built electronic equipment before. Whether you are a
newcomer or an old- timer, you will find the DX -40 a very worthwhile
addition to your ham shack. Shpg. Wt. 26 lbs.
By
Daystrom
DX-20 CW
Transmitter KIT
FEATURES
watts plate power input to 6DQ6A final.
Straight -CW operation-maximum efficiency and clean output signal
Crystal controlled-or may be excited from external VFO.
50
Covers
80-40-20- 15 -11 -10 meters.
Single -knob band switching-no coils to change.
$3595
MODEL
DX -20
SPECIFICATIONS
RF Power Input ....
Output Impedance
Output Coupling
Operation....
..
...
Pi network (coaxial).
Crystal -external VFO.
Band Coverage
80- 40-20- 15-11 -10.
Tube Complement
5U4GB rectifier.
6CL6 oscillator.
6006A final amplifier.
115 volts AC, 60 cycles, 150 watts,
Power Requirements.
Cabinet Size
Net Weight
Shipping Weight
Here in the model DX -20 is a transmitter that has been designed without compromise, exclusively for CW work. It features an entirely new
circuit over the preceding model, and is one of the most efficient
little transmitters available today. It's the ideal rig for the novice or
for the advanced -class CW operator. Just the ticket for any radio
amateur interested in CW work who appreciates a good clean signal,
and wants the most "watts- per -dollar" in his ham shack.
The plate power input of the model DX -20 is 50 watts, and the rig
covers 80, 40, 20, 15, 11 and 10 meters. It is designed for crystal excitation but an external VFO may be used. A pi network output circuit
is featured for matching antenna impedances between 50 and 1000
ohms. It employs a 6DQ6A final amplifier, a 6CL6 oscillator, and a
5U4GB rectifier. A great deal of thought went into the design of this
rig. It features short leads, horizontal tube mounting, a very efficient
band change switch arrangement, and many other evidences of
careful design. The transmitter incorporates single knob band
switching, uses potted transformers, and high quality components
throughout. Truly, the CW man's transmitter. Top performance for
minimum investment.
Measuring only 13" W. x 8%" H. x 7" D., the DX -20 is enclosed in a
tight steel cabinet to minimize TVI. The front panel was designed
with full consideration for convenience of operation. The two large
knobs at each side of the panel are for tuning the oscillator and the
final amplifier. The band change switch is in the center of the panel,
just below the meter switch. The easy -to -read meter indicates final
grid current or final plate current. Across the bottom of the panel,
from left to right, are the main "on -off" switch, the "on- standby"
switch, the variable "loading control ", to match various antenna
50 watts CW.
50 -1000 ohms.
13° wide
x
8ie
high x 7" deep.
16 lbs.
18 lbs.
impedances, the "tune- operate" switch, and the key jack. The
"tune- operate" switch provides a means of switching on the oscillator
without the final amplifier being on; so the operator can locate his
own signal on the band without going on the air, and tune the
oscillator stage before the final is on. The crystal socket is located
inside of the cabinet, and a "snap -out" plug is provided on the left
panel of the case for convenient access while still maintaining "tight"
construction. This minimizes radiation outside of the case, lessening the possibility of television interference. The antenna output is
on the back chassis apron. In addition to being an attractively styled
transmitter, and featuring an "optimized" circuit, the DX -20 is very
easy to build. This probably would not be of great concern to the
"old- timer ", but it is important to the novice or beginning ham. The
construction manual contains complete step -by -step directions for
assembly. Large pictorial diagrams are referenced all the way
through, and it is not necessary to read a schematic dliagram. We
are sure you will agree that this CW transmitter cannot be matched
for over -all quality and efficiency on the market today. Shpg. Wt.
18 lbs.
TIME PAYMENTS
The Heath Time Payment Plan was designed for your convenience. Now you can order the kits of your choice, and pay
for them over a 12 -month period. Use this plan for any purchase amounting to $90 or more, whether it consists of a
single kit or a group of kit items. See order blank for details.
HEATHKIT
By Daystrom
VARIABLE FREQUENCY OSCILLATOR
VFO KIT
FEATURES
Covers
160- 80- 40-20- 15 -11 -10 meters.
Smooth -acting, illuminated and precalibrated dial.
0A2 voltage regulator tube for stability.
$195
O
6AU6 electron- coupled Clapp oscillator.
MODEL
VF -1
-
Copper plated chassis -aluminum case -extensive shielding
ceramic coil forms, switch wafers, and tuning condenser insulation.
SPECIFICATIONS
Output Frequencies
1750 -2000 kc, 7000 -7425 kc, 6740 -6808 kc.
Calibrated Bands
160- 80- 40- 20- 15 -11 -10 meters.
RF
Output
Approximately 10 v. on fundamentals.
Output Termination
50 ohm coax.
Tube Complement
6AU6 Oscillator, 0A2 Voltage Regulator.
Power Requirements
250 -350 VDC
Dimensions
7r high x 6','
Net Weight
4 lbs.
Shipping Weight
7
to plug for
i
r crystal socket.
t4 15-20 ma. and 6.3 VAC
wide
x
14 .45 A.
7' deep.
lbs.
Enjoy the convenience and flexibility of VFO operation by obtaining
the Heathkit model VF -1 Variable Frequency Oscillator. It features
voltage regulation for frequency stability and covers 160--80-4020 -15 -11 and 10 meters with three basic oscillator frequencies.
Better than 10 volt average RF output on fundamentals. Plenty of
output to drive most modern transmitters. More than 2 feet of dial
calibration available, and the dial is illuminated for maximum readability. Vernier reduction is used between the main tuning knob
and the tuning condenser for smooth dial action. Requires a power
source of only 250 volts DC at 15 to 20 miliamperes and 6.3 volts AC
at 0.45 amperes available on most transmitters.
Extra features include copper-plated chassis, ceramic coil forms,
extensive shielding, etc. High -quality parts are used throughout.
It's easy to build, too, because of the complete construction manual
supplied. Calibration instructions are also provided in the manual.
All adjustments are easy to reach through appropriate holes provided in the cabinet.
VFO operation allows you to move out from under interference
and select a portion of the band you want to use without having to
be tied down to only two or three frequencies through the use of
crystals. "Zero in" on the other fellow's signal and return his CQ on
his own frequency! Crystals are not cheap, and it takes quite a
number of them to give anything even approaching comprehensive
coverage of all bands. The cost of the Heath VF -1 is far below that
of crystals, so if you want complete coverage of the amateur bands
from 160 meters through 10 meters, why hesitate? The model VF -1
with its low price and high quality will add more operating enjoyment to your ham activities. Shpg. Wt. 7 lbs.
HAMS WITH YOUR INTERESTS IN MIND
...
All of these licensed radio amateurs work at the Heath Company, and each
of them makes his own important contribution to the Heath line of fine
ham kits. In a sense, they are your representatives within the company,
since their design ideas and performance preferences reflect not only
their own "on-the -air" experiences, but those of the amateur fraternity
with which they are in constant contact.
Perhaps you have already met some of them on the bands. In the back
row, from left to right, are Al (K8BLL), Dar (K8ADS), Rog senior Ham
Engineer (W8MWZ) Doug (K8GNA), Chuck (K8CJI), Al (W8HTX), Clell
(K8DKY), and Dick (K9BMJ /8). In the front row are Fred (K8GMY), Wayne
(W8YRW), Frank (W8WUN), Rex (K8GND), and Gil (W8QAH /K9BRK).
Ernie (W8VPN), Carl (W8UVK), and Don (W8LTB) are not pictured.
With this group representing you in Benton Harbor you can rely, as
always, on high -performance equipment designed by hams for hams!
,
HEATHKIT
By
Daystrom
REFLECTED
Power Meter KIT
FEATURES
Completely self-contained- requires no external power for operation.
Forward or reflected power and SWR (Standing wave ratio)
measured directly on calibrated meter.
Designed for operation on 50 or 75 ohm lines.
Handles well over
I
$1595
MODEL
kilowatt of power-introduces no insertion loss.
AM -2
Easy -to- assemble and use.
SPECIFICATIONS
INPUT
NOTE
OUTPUT
N =
-Q
1000 or
Two
Power Handling
Capabilities
R. F.
15011
resstors
and two
t500 resistors are Included to
We Mt.
The loon
resistors
a
for 150 input and output.
wed
The 1500 resistors are used
for 500 Input and output.
ODI
Input and Output Impedance
Power Requirements
Band Coverage
Meter
Operation
Cabinet Size
Net Weight
Shipping Weight
50 K
UNEAR
SPOT
SWITCH
One full kilowatt.
50 and 75 ohms.
None externally.
160 through 2 meters.
100 microamperes, full scale.
Indicates percentage, forward and reflected power,
and standing wave ratio from 1:1 to 6:1.
%'
73
x
41/2' x 45%'.
pounds.
pounds.
11/2
3
NEATHKIT REFLECTED POWER
AND STANDING WAVE RATIO BRIDGE
MODEL AM-2
With the Heathkit Reflected Power Meter, model AM -2, you no
longer have to worry about the efficiency of your antenna system.
The AM -2 is ideal for checking the match of the antenna transmission system, by measuring the forward and reflected power or
standing wave ratio. It is designed to handle a peak power of well
over
kilowatt of energy and may be left in the antenna system
feedline at all times. Band coverage is 160 meters through 2 meters.
Input and output impedances provided for 50 or 75 ohm lines. No
external power is required for operation. Meter indicates percentage
forward or reflected power, and standing wave ratio from 1:1 to 6:1.
A control is provided in the meter circuit to adjust the reading from
off -scale to full scale reading without the necessity of reducing the
transmitter output to acquire the proper "on- scale" level.
1
H
Another application for the AM -2 is matching impedances between exciters or RF sources and grounded grid amplifiers. Power
losses between transmitter output and antenna tuner may be very
easily computed by inserting the AM -2 in the line connecting the
two. No insertion loss is introduced into the feeder system, due to
the fact that the AM -2 is a portion of coaxial line in series with the
feeder system and no internal connections are actually made to the
line. Input and output coaxial connections are provided at the rear
of the AM -2 cabinet. A complete circuit description and operation
instructions are provided in the manual. Cabinet size is 7%" x 4%"
x 4% ". This unit can be conveniently located at operating position
and will provide an accurate reading of the function of the antenna
configuration at all times. Shpg. Wt. 3 lbs.
EATHKIT
Antenna Impedance Meter KIT
Use the Heathkit model AM -1 Antenna Impedance
MODEL
AM -1
$14so
Meter for measuring antenna impedance, for line
matching purposes, and adjustment of beam and
mobile antennas. Match the complete antenna receiver- transmitter system for optimum overall
operation. Used in conjunction with a signal
source, such as the Heathkit model GD -1 B Grid
Dip Meter, the AM -1 will determine antenna resistance and resonance, match transmission lines
for minimum SWR (standing wave ratio), determine
receiver input impedance and provide a close
approximation of SWR. Will also double as a phone
monitor, or will function satisfactorily as a relative
field strength meter.
Uses precision resistor, germanium diode and
100 microampere meter. The dial covers the range
from 0 -600 ohms so as to include the popular 600
ohm transmission line. Operates up to 150 megacycles.
Housed in a shielded aluminum cabinet which
is 7" L. x 2%" W. x 3X" D. A valuable instrument
around the ham shack. Shpg. Wt. 2 lbs.
\
61-EATHKIT
/
\
By
Daystrom
ELECTRONIC
Voice Control KIT
FEATURES
Voice -operated receiver and transmitter switching.
Variable time control relay.
5
$239
MODEL
VX -1
Completely self -contained-including power supply and cables.
SPECIFICATIONS
Switched Circuits
No Voltage Output....
1-13
1-5
Switched Circuit
With Voltage Output
Tube Complement
Adaptable for remote control operation.
Requires no transmitter or receiver alterations to operate.
Voice controlled antenna relay voltage available.
1
1
1
1
1
amperes.
amperes.
-117 volts AC at 5 amperes.
-12AX7 speech amplifier.
-12AT7 audio driver and anti -trip amplifier.
-6AL5 bias voltage rectifier.
-12BY7 relay switch tube.
Power Requirements...
Cabinet Size
117 volts AC, 50-60 cycles.
73/aß W. x 4%" H. x 4" D.
Shipping Weight
5 lbs.
Attention all ham operators! Here is a new and exciting kit that will
add greatly to your enjoyment in the ham shack. The model VX -1
Electronic Voice Control allows you to switch from receiver to transmitter merely by talking into your microphone. Instead of making
long transmissions and risking possibility of losing the other fellow
-this unique device lets you operate "break -in" even with ar ordinary AM transmitter. You get the advantage of "telephone -type
conversation" as in SSB but with regular AM transmission. The
VX -1 represents a new concept in AM radio transmission.
The VX -1 combines an electronic voice operated relay with a
receiver "muting" stage. This circuitry performs several operations.
During listening periods, the receiver audio must be isolated from
the microphone. This is accomplished by the anti -trip amplifier
which causes an out -of -phase condition between the receiver audio
and the operator's voice, allowing operation only when the operator
speaks. When the operator talks into the microphone, the receiver
is automatically muted by opening the voice coil of the speaker. At
the same time, it will actuate your antenna relay switch on the transmitter. The unit is adjustable to all conditions by sensitivity and gain
controls provided. In addition, a variable time delay control is incorporated to modify the "hold" time to suit the requirements of
the individual operator.
The power supply, which furnishes the heater and high voltages,
is built in for simplicity of operation. No external power is required.
The controls consist of: time delay, VOX- standby -manual switch,
Ilk10o 1
._..
=
o
,
4
/1
off -on switch, receiver and transmitter sensitivity controls. The
microphone input connector is also located on the front panel. A
terminal strip is provided on the rear chassis apron for receiver and
speaker connections and also for a 117 volt antenna relay. This unit
is very easy to build with complete instructions provided for assembly and operation. Connection between the various units is also
covered in detail with all necessary cable supplied.
The small size and attractive appearance of this fine unit will
blend with your other equipment and will greatly simplify operation.
Although designed primarily for operation with the DX -100 Transmitter, the VX -1 can also be used in many other applications. Due
to the preamplifier, which is built -in, and the associated circuitry,
it may very easily be combined with a single sideband exciter, intercom system, recorder or dictaphone, etc. A current -carrying
capacity of 15 amperes is available across pins 3 and 4 of the octal
plug, and a current capacity of 5 amperes is provided across pins
8 and 1. A potential of 117 volts AC at 5 amperes is also available.
The VX -1 may also be used as an auxiliary speech amplifier for
feeding audio to an existing modulator or modulator driver stage.
A length of microphone cable is furnished with the VX -1, to couple
its output to the transmitter "mike" input connector. By making the
connections as described in the manual a two -stage audio amplifier
results.
Modernize your ham shack now and enjoy the convenience of
automatic operation. Shpg. Wt. 5 lbs.
^
.. ._
HEAT H K T
M
By Daystrom
TRANSISTOR RADIO
Direction Finder KIT
FEATURES
Light, compact and self-powered.
Use
6
it for radio -compass
or as
a
portable radio.
$5495
name -brand (Texas instrument) transistors.
MODEL
DF -1
Directional ferrite loop antenna -built -in speaker.
Prealigned IF transformers
vernier dial tuning.
SPECIFICATIONS
Frequency Rangs
Sensitivity, at
50
reference level:
Antenna
Converter Base
Broadcast Band (540 to 1620 Kilocycles).
mw. output
120uv /meter.
0 44uv /meter.
Power
9
Current Drain
9 ma. with no signal.
20 ma. with 50 mw output.
Direction Indicator
Null and Tuning Indicator
Antenna
Transistor Complement
volt battery (spare included with kit).
Adjustable compass rose, calibrated in degrees.
meter.
High "Q" ferrite, rotated from panel.
2N252 -RF amp, local OSC., & converter.
2N308 -First IF amp.
0-1 ma
2N309- Second IF amp.
Dimensions Overall
Net Weight
Shipping Weight
The Heathkit Transistor Radio Direction Finder model DF-1 is a
self- contained, self -powered, super heterodyne broadcast radio
receiver incorporating six name brand (Texas Instrument) transistors, a directional loop antenna, indicating meter, and integral
speaker. It is designed primarily as an aid to navigation when out
of sight of familiar landmarks. The DF -1 can be used not only aboard
yachts, fishing craft, tugs, and other vessels which navigate either
out of sight of land or at night, but the hunter, hiker, camper, aviator,
etc., can use it as a radio compass in unfamiliar territory and use it
as a portable radio as well.
The DF -1 is powered by a 9 -volt battery (a spare is included with
the kit which can be kept in the special clip provided for it in the
cabinet). The frequency range covers the broadcast band from 540
to 1620 kc. The broadcast band was selected for this unit since
broadcast stations are numerous, easy to identify and tune in.
A directional high -Q ferrite antenna is incorporated which is
rotated from the front panel by a nylon right -angle gear drive to
milliampere meter serves as the null
obtain a fix on a station. A
and tuning indicator. The DE -1 is very easy to operate. You simply
select a station and rotate the antenna for minimum deflection on
the tune portion of the meter. To find the direction of a station you
set the sensitivity control and rotate the antenna for maximum
reading on the null portion of the meter. The maximum null will
occur when the antenna is in line with the station being received.
Direction can be read on the compass rose or antenna index incor1
2N238 -First AF amp.
2N185 (pair) -push -pull AF output.
71/2" W. a 57/e" H. x 53/8" D.
31 lbs.
5lbß.
porated. The controls consist of: tuning, volume and power (on -off),
sensitivity, heading indicator (compass rose), and bearing indicator
(antenna index). A six -to -one vernier is provided on t'le tuning
condenser to allow precision tuning.
The DF -1 is supplied with slip -in -place mounting brackets, which
allow easy removal from ship bulkheads or other similar places.
Overall dimensions are 7%" W. x 5%" H. x 5%" D. Highest quality
components are used throughout in construction with each part
clearly marked to aid in identification. In addition, moisture and
fungus -proofing lacquer is supplied with the kit to coat all components after assembly and prevent corrosion. Construction is simplified through the use of detailed step -by -step instructions and
pictorial diagrams. Even the beginner with little or no electrical
experience can build this unit successfully. The IF transformers are
prealigned so it is ready to operate as soon as construction is
completed. For best results however, a slight touchup of alignment
would be recommended to compensate for minor variations in
components and wiring as explained in the manual. Calibration
instructions are simple and easy to accomplish with alignment tool
furnished. No special equipment is required for alignment. Information is also given on the proper use of the completed unit. The
bibliography section of the manual lists bulletins and publications
which can be obtained for additional navigation information.
This light, compact unit will provide you with a means of enjoyment as well as serving a very useful function. Shpg. Wt. 5 lbs.
Di
H
EAT H K IT
By Daystrom
MARINE BATTERY
Charge Indicator KIT
FEATURES
Indicates condition and charge of batteries for safe cruising.
Hermetically sealed waterproof meter.
$169
5
Chrome plated, solid brass panel.
Checks one, or as many as eight storage batteries.
MODEL
CI -1
Easy to
install- requires minimum space on instrument panel.
SPECIFICATIONS
Operation..
Checks.
Meter
Panel
Dimensions
Shipping Weight
Indicates proper charging rate and condition of
batteries in 6 or 12 volt systems.
to 8 separate batteries of lead acid type, regardless of size. All wire and cable supplied.
...Special- design, hermetically sealed.
1
Chrome plated, solid brass.
2 %s' W. x 5%' H. x 2° D.
3 lbs.
POSITIVE
-W
8
WHITE
k
7
BLUE
W
6
GREEN
#
5
YELLOW
W
a
ORANGE
.W
7
-e
O
2 BROWN
O
I
BLACK
7
n
r)
OFF
YELLOW
-W a ORANGE
o -#3
RED
#
WHITE
-W 6 GREEN
O
CABLE
B
_AI 7 BLUE
-W2
BROWN
-b
SLACK
I
NEGATIVE
CABLE
RED
TO BATTERIES
The Heathkit model CI -1 Marine Battery Charger Indicator was designed especially for the boat owner. It is intended to replace the
hydrometer method of checking storage batteries, and to eliminate
the necessity for working with acid in small, below -decks enclosures.
Now it is possible to check as few as one, or as many as eight
storage batteries, merely by turning the switch and watching the
meter. A glance at the meter tells you instantly whether your batteries are sufficiently charged for safe cruising. State of charge is
indicated on a four -color scale. Operates on either 6 or 12 volt
systems using lead acid batteries, regardless of size. The simple
installation can be accomplished by the boat owner in fifteen
minutes. Dimensions are 2 %" W. x 5%" H. x 2" D. Although designed
mainly for marine use the CI -1 has also found extensive use in service stations, power stations, and radio stations where banks of bat-
teries are kept in reserve. It can also be used in new automobiles
that do not have an ammeter, to note the actual condition of the
battery instead of only indicating whether it is charging or discharging. Continuously indicates precentage of charge without running
the battery down. It also locates defective or weak batteries and indicates the proper charging rate. A nine -position switch is provided
so that the state of charge of each battery can be read in turn, as the
switch is rotated. If less than eight batteries are in the system, only
those switch positions corresponding to the number of batteries will
be in use, and only on these will a reading be noted. Only the highest
quality of components are used in marine kits such as hermetically
sealed waterproof- meter, and chrome plated, solid brass panel.
Engineered in accordance with Navy requirements to insure long
service life. Shpg. Wt. 3 lbs.
1111111111111
HEATHKIT
Electrolysis Detector KIT
The Heathkit model ED -1 Electrolysis Detector indicates the extent of electrolysis currents between
the boat's common ground and underwater fittings,
except on boats having metal hulls. These currents,
undetected, could cause gradual corrosion, and
deterioration of the propeller or other metal fittings.
It is particularly helpful when installing electrical
equipment of any kind, or to determine proper
polarity when power is obtained from a shore sup-
ply. Easy-to- build, the model ED -1 consists of a
hermetically -sealed waterproof meter, a special
sensing plate, and sufficient wire to install, including the necessary hardware. Mounts on instrument
panel where it can be easily seen. Nautically styled
to match other instruments. The ED -1 is equally
applicable for salt or fresh water. Requires no
power for operation, and gives instant warning to
guard your boat for a life -time. Shpg. Wt. 2 lbs.
MODEL
ED -1
$1995
By Daystrom
Fuel Vapor Detector KIT
FEATURES
Hermetically sealed meter -chrome -plated panel.
Simple "safe- dangerous" indicator scale.
Explosion -proof detector unit with spare element.
35h
MODEL FD -1 -6
(6 volt)
MODEL FD -1 -12
Complete with heavy -duty neoprene -insulated cable.
Easy to build and install on your boat.
(12
volt)
SPECIFICATIONS
zw
Operation
Detector
311
CALIF RATE
Cable
Meter
scale.
2011
Panel......
Brass- chrome plated.
Power requirements
FD -1 -6
FD -1 -12
Dimensions
Shipping Weight
TO BOATS
IONITION SYSTEM
OPTIONAL
ONO.
I
Indicates explosion potential of fuel vapor. Protects an area of approximately 1000 cubic feet.
Two glass -enclosed filaments encased in an
explosion -proof monel metal screened housing
(spare detector filament unit included with kit).
Heavy duty, neoprene insulated.
Hermetically sealed waterproof meter with 3 -color
31/4"
W. x
6 volts DC at
12 volts DC at
7 74,"
H.
x 31/4"
1
1
amp.
amp.
D.
4 lbs.
NOT
Ev EATTENI
I
1
All boat owners are safety conscious -particularly when it comes to
the very real dangers of explosion from combustible fumes accumulating in the engine compartment, or in other sections of the craft.
The Heathkit Fuel Vapor Detector has been designed to set your
mind at ease concerning fuel vapor problems by indicating the explosion potential in whatever part of the boat the detector unit is
placed.
The indicator mounts on or near your instrument panel -so the
presence of fumes can be seen on the meter, before the ignition is
turned "on ". A three -color "safe- dangerous" scale immediately
shows if it is safe to start the engine. A pilot light on the front panel
shows when the detector is operating, and it can be left on continuously, or just used intermittently. Having this reliable indicator
right at hand is more than
a convenience; it is a necessity, for the
safety of everyone aboard, and as protection for your investment in
the boat itself.
The detector is connected to the indicator by a heavy -duty
neoprene -insulated cable, highly resistant to the effects of oil and
gasoline. A panel control enables initial calibration of the detector
when installed. The indicator features a hermetically -sealed meter
and a chrome -plated brass panel. It is very simple to build and install, even by one not having previous experience.
The FD -1 -6 (6 volts DC) and FD -1 -12 (12 volts DC) operate from
your boat batteries. The kit is complete in every detail, even to the
inclusion of a spare detector unit. It constitutes a small price to pay
for the safety of yourself, your family, and your boat) Shpg. Wt. 4 lbs.
HEATHKIT RF POWER METER KIT
MODEL
PM -1
$1495
The Heathkit RF Power Meter Kit is designed to sample the RF field in the vicinity of your
transmitter, whether it be marine, mobile, or fixed. it requires no batteries, electricity, or
direct connection to the transmitter. The power meter is merely placed in some location
close to the transmitter, to pick up RF radiation from the antenna which is then indicated
on a panel meter. It provides you with a continuous indication of transmitter operation.
You can easily detect if power is dropping off by comparing present meter readings with
past ones.
The PM -1 operates with any transmitter having output frequencies between 100 kc and
250 megacycles, regardless of power. Sensitivity is 0.3 volts RMS full scale, and a special
control on the panel allows for further adjustment of sensitivity. The meter is a 200 ua
unit, mounted on a chrome -plated brass panel. Housed in a plastic case the entire PM -1
measures only 3 %" W. x 614" L. x 2" D. An easy way to put your mind at ease concerning
transmitter operation. Shpg. Wt.'2 lbs.
buy from the
pioneer in "do-it-yourself" electronics
and save
HEATH COMPANY BENTON HARBOR, MICHIGAN
a subsidiary of Daystrom, Inc.
UTHO
IN
U.S.A..
MOSSBERG A COMPANY.
INC..
SOUTH BEND,
IND.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement