®
SW8 World Band Shortwave Receiver
with Selectable Sideband Synchronous Detector
Owner's Manual
Downloaded by
Amateur Radio Directory
www.hamdirectory.info
SW8 World Band
Shortwave Receiver
AGC S AM SYNC LSB
+60
+40
+20
9
7
5
3
1
TIMER
MEM
SW
METER
KHz
6.0
TONE
BAND
1
2
L
H
VOLUME
POWER
push
TUNING
3
SW
F
SSB
BW
SCAN
MEM
ATT
AGC
9
LAMP
STORE
VFO
DEL
SKIP
CLEAR
BEEP
TIMER
CLOCK
BCB
AIR
4 AM
SYNC
5
7
8
6
0
® is a registered trademark of the R. L. Drake Company
© Copyright 1997 R. L. Drake Co.
P/N: 3851295F-4-1997
Printed in the U. S. A.
Declaration of Conformity
We, Manufacturer/Importer
(Full address)
R. L. Drake Company
230 Industrial Drive
Franklin, Ohio 45005 United States of America
declare that the product
(description of the apparatus, system, installation to which it refers)
SW8 World Band Shortwave Receiver
1295
is in conformity with
(reference to the specifications under which conformity is declared)
in accordance with 89/336/EEC-EMC Directive
EN 55011
Limits and methods of measurement
of radio disturbance characteristics of
industrial, scientific and medical (ISM)
high frequency equipment
EN 55013
Limits and methods of measurement
of radio disturbance characteristics of
broadcast receivers and associated
equipment
Limits and methods of measurement
of radio disturbance characteristics of
household electrical appliances,
portable tools and similar electrical
apparatus
EN 55014
Limits and methods of measurement
of radio disturbance characteristics of
flourescent lamps and luminaries
EN 55015
EN 55020
immunity from radio interference of
broadcast receivers and associated
equipment
EN 55022
Limits and methods of measurement
of radio disturbance characteristics of
information technology equipment
EN 60555-2
Disturbances in supply systems caused
by household appliances and similar
electrical equipment "Harmonics"
EN 60555-3
Disturbances in supply systems caused
by household appliances and similar
electrical equipment "Voltage fluctuations"
EN 50081-1
Generic emission standard Part 1:
Residual, commercial and light industry
EN 50082-1
Generic immunity standard Part 1:
Residual, commercial and light industry
EN 50081-2
Generic emission standard
Part 2: Industrial environment
EN 50082-2
Generic immunity standard
Part 2: Industrial environment
EN 50065-1
Signalling on low-voltage electrical
Installations in the frequency range of 3kHz
to 148.5kHz
Part 1: General requirements, frequency
bands and electromagnetic disturbances
EN55104
Immunity requirements for household
appliances tools and similar apparatus
DIN V VDE 0855 Cabled distribution systems; Equipment
for receiving and/or distribution from
part 10
sound and television signals
part 12
CE marking
(EC conformity marking)
The manufacturer/importer also declares the conformity of above mentioned product
with the actual required safety standards in accordance with LVD 73/23 EEC.
EN 60065
Safety requirements for mains operated
electronic and related apparatus for
household and similar general use
Manufacturer/Importer
Signature:
®
Date:
(Stamp)
January 01, 1997__Name:
Date: April 26/1996
EMC Tested by
electronic GmbH
___________________
Ronald E. Wysong____
Signature: ______________________
Ref. No. 963732
Name:
P. Kraßowski Dipl.-Ing.
Important Safeguards
WARNING: TO PREVENT FIRE OR
ELECTRICAL SHOCK DO NOT
EXPOSE THIS PRODUCT'S AC ADAPTOR TO
RAIN OR MOISTURE
¡CAUTION!
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK,
DO NOT REMOVE COVER OF AC ADAPTOR
NO USER-SERVICABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
i
An appliance and cart combination should be moved
with care. Quick stops, excessive force and uneven
surfaces may cause the appliance and cart combination to overturn.
The lightning flash with arrow head symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated "dangerous voltage" within
the product's enclosure that may be of sufficient
magnitude to constitute a risk of electric shock to
persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS PRODUCT'S
AC ADAPTOR TO RAIN OR MOISTURE. DO NOT OPEN THE AC ADAPTOR CASE, REFER
SERVICING TO QUALIFIED PERSONNEL ONLY.
CAUTION: TO PREVENT ELECTRIC SHOCK, DO NOT USE THE AC ADAPTOR WITH AN EXTENSION CORD
RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES OF THE AC ADAPTOR CAN BE FULLY
INSERTED TO PREVENT BLADE EXPOSURE.
ATTENTION: POUR PREVENIR LES CHOCS ELECTRIQUES, NE PAS UTILISER CETTE FICHE POLARISEE
AVEC UN PROLONGATEUR, UNE PRISE DE COURANT OU UNE AUTRE SORTIE DE COURANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSER AUCUNE
PARTIE A DECOUVERT.
1. Read Instructions—All the safety and operating instructions
should be read before the appliance is operated.
2. Retain Instructions—The safety and operating instructions
should be retained for future reference.
3. Heed Warnings—All warnings on the appliance should be
adhered to.
4. Follow Instructions—All operating and use instructions should
be followed.
5. Cleaning—Unplug this appliance from the wall outlet before
cleaning. Do not use liquid cleaners or aerosol cleansers. Use a
damp cloth for cleaning.
6. Do Not Use Attachments—not recommended by the manufacturer or they may cause hazards.
7. Water and Moisture—Do not use this product near water—for
example, near a bathtub, wash bowl, kitchen sink, laundry tub, in
a wet basement, or near a swimming pool—and the like.
8. Accessories—Do not place this product on an unstable cart,
stand, tripod, bracket, or table. The product may fall, causing
serious injury to a child or adult, and serious damage to the
appliance.
9. Ventilation—This product should never be placed near or over
a radiator or heat register. This product should not be placed in a
built-in installation such as a bookcase or rack unless proper
ventilation is provided or the manufacturer’s instructions have
been adhered to. Any slots or openings in the cabinet are provided
for ventilation.
To ensure reliable operation of the product and to protect it from
overheating, these openings must not be blocked or covered. The
openings should never be blocked by placing the product on a
bed, sofa, rug, or other similar surface. KEEP CURTAINS AND
OTHER FLAMMABLE MATERIALS OUT OF DIRECT CONTACT WITH THE AC ADAPTOR.
10. Power Sources—This product should be operated only from
the type of power source indicated on the marking label of the
supplied AC Adaptor. If you are not sure of the type of power
supplied to your home, consult your appliance dealer or local
power company.
11. Lightning—For added protection for this product during a
lightning storm, or when it is left unattended and unused for long
periods of time, unplug the AC adaptor from the wall outlet.
12. Power Lines—An outside antenna system should not be
located in the vicinity of overhead power lines, other electric light
or power circuits, where it can fall into such power lines or circuits.
When installing an outside antenna system, extreme care should
be taken to keep from touching such power lines or circuits as
contact with them may be fatal.
13. Overloading—Do not overload wall outlets and extension
cords as this can result in a risk of fire or electric shock.
ii
Important Safeguards, continued
14. Servicing—Do not attempt to service the AC adaptor yourself
as opening or removing covers may expose you to dangerous
voltage or other hazards. Refer all servicing to qualified service
personnel.
15. Damage Requiring Service—Unplug this product from the
wall outlet and refer servicing to qualified service personnel under
the following conditions:
a. When the AC adaptor cord or plug is damaged.
b. If the AC adaptor has been exposed to rain or water.
c. If the product does not operate normally by following the
operating instructions. Adjust only those controls that are covered
by the operating instructions. An improper adjustment may result
in damage and will often require extensive work by a qualified
technician to restore the product to its normal operation.
d. If the product has been dropped or the cabinet has been
damaged.
e. When the product exhibits a distinct change in performance—
this indicates a need for service.
16. Replacement Parts—When replacement parts are required,
be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the
original parts. Unauthorized substitutes may result in fire, electric
shock or other hazards.
17. Safety Check—Upon completion of any service or repairs to
this product, ask the service technician to perform safety checks
to determine that the product is in proper operating condition.
18. Outdoor Antenna Grounding—Before attempting to install
this product, be sure the antenna or cable system is grounded so
as to provide some protection against voltage surges and built-up
static charges.
a. Use No.10 AWG (5.3mm2) copper, No.8 AWG (8.4mm2) aluminum, No.17 AWG (1.0mm2) copper-clad steel or bronze wire or
larger, as ground wire.
b. Secure antenna lead-in and ground wires to house with standoff insulators spaced from 4 feet (1.22m) to 6 feet (1.83m) apart.
c. Mount antenna discharge unit as close as possible to where
lead-in enters house.
d. A driven rod may be used as the grounding electrode where
other types of electrode systems do not exist. Refer to the National
Electrical Code, ANSI/NFPA 70-1990 for information.
e. Use jumper wire not smaller than No.6 AWG 13.3mm2) copper
or equivalent, when a separate antenna grounding electrode is
used.
" INSTALL WIRING ACCORDING TO THE CANADIAN ELECTRICAL CODE"
"EFFECTUER LE CABLAGE CONFORMEMENT AU CODE CANADIEN DE L' ELECTRICITE"
EXAMPLE OF ANTENNA GROUNDING
ANTENNA
LEAD IN
WIRE
GROUND CLAMP
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
ELECTRIC
SERVICE
EQUIPMENT
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
NEC - NATIONAL ELECTRIC CODE
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
Table of Contents
iii
Thank you for purchasing a Drake SW8 World Band
Shortwave Receiver. This receiver has been designed
and manufactured to high quality standards, and will
provide reliable operation for many years.
Please carefully read the Owner's Manual in order to
take advantage of the many interesting features that
will provide enjoyable listening to radio broadcasts
around the world.
Important Safeguards
i
Table of Contents
iii
Introduction - General Description
1
Memory Functions
Memory Location Programming
Recalling A Memory Location
Deleting A Memory Location
13
13
13
13
Introduction - Specifications
Optional Accessories
2
2
Scan Functions
Memory Channel Skip
14
14
Introduction - Battery Operation and
Installation
3
Installation
Unpacking
Location
Adjusting Carrying Handle
Fixed Installation
Portable Operation
Antenna Requirements
Installation Diagram
4
4
4
4
4
4
4
5
Clock and Timer Functions
Time Display
Setting The 24 Hour Clocks
Timer Operation
Setting Timer On/Off Times
Example for Setting Timer
Enabling / Disabling Timer
Example for Setting Overlapping
Events
Example for Setting Events On Two
Different Memory Channels
15
15
15
15
15
16
16
Front Panel Description
Telescoping WHIP Antenna
6
7
18
18
Front Panel Display
8
Rear Panel Description
Aircraft Band Squelch
Master Power Switch
9
9
9
Special Use Features and Functions
Lock All Entry to Keypad
10 kHz/9 kHz Broadcast Band Tuning
Step Size
Delete All Memory Channels
Automatic Bandwidth Setting with
Mode Selection Disable (Enable)
Quick Reference Guide
19
Getting Started
General Operating Information
Microprocessor Reset
Beep Tones
Direct Frequency Entry
Shortwave METER Band
Designator Entry
Frequency Resolution
Front Panel Lock (Unlock)
AM Synchronous Operation
SSB Operation
FM Operation
AGC Operation
10
10
10
10
10
Memory Channel Log
21
Suggested References
24
Glossary of Terms
25
11
12
12
12
12
12
12
Troubleshooting
26
Service and Warranty
27
17
17
18
18
18
iv
Introduction - General Description
1
SW8 World Band
Shortwave Receiver
AGC S AM SYNC LSB
+60
+40
+20
9
7
5
3
1
TIMER
MEM
SW
METER
KHz
6.0
TONE
BAND
1
2
BCB
L
H
VOLUME
POWER
push
The SW8 is a microprocessor controlled, synthesized,
world band receiver with continuous coverage capability from 500 kHz through 30 MHz which includes the
AM broadcast and shortwave bands. Reception also
includes FM broadcast (87 - 108 MHz) and Aircraft
(118-137 MHz). The SW8 offers excellent sensitivity,
selectivity, dynamic range and features that permit easy
tuning of desired stations. Conveniently located front
panel controls allow for rapid operator programming
and ease of use. The unit can be operated from either
the supplied AC Adaptor or from six “D” cell batteries
(not supplied) for portable operation. A low battery
voltage indication is displayed when that condition
exists.
TUNING
3
AIR
4 AM
SYNC
5
7
8
SW
6
F
SSB
BW
SCAN
MEM
ATT
AGC
9
LAMP
STORE
VFO
DEL
SKIP
CLEAR
BEEP
TIMER
CLOCK
0
Reception modes include Lower/Upper Sideband
(LSB), (USB), and AM in the Shortwave, AM broadcast
and Aircraft bands. For the Shortwave and AM
broadcast bands, a selectable synchronous detector
(SYNC) allows for enhanced reception by eliminating
or reducing distortion due to fading signals. During FM
broadcast use, stereo reception is available through the
use of headphones.
Other built-in reception aids include selectable slow or
fast AGC, RF attenuator for use in strong signal
handling conditions and TONE control.
Three electronically switched IF filters are provided.
Two independent, real time clocks provide a local and
alternative time selection. Also provided is a two event
timer.
The front panel liquid crystal display provides feedback
of the current status of the receiver. The seven digit
frequency display provides resolution to 100 Hz
accuracy in the AM broadcast, Aircraft and Shortwave
bands. Resolution to 20 kHz is displayed in the FM
broadcast band mode. Backlighting of the display is
selectable by a front panel button. To prolong battery
life with internal battery operation, the backlighting
automatically turns off after a short delay following a
function change or retuning of the receiver.
A programmable memory area allows for 70 independent receiver set up memories. These memories do
not require battery backup and are thus unaffected by
power interruptions. All parameters associated with a
particular memory channel are stored including the
frequency, mode, bandwidth, fast or slow AGC, RF
attenuator and synchronous detector. These memory
channels may be accessed manually or through a time
scan with each channel monitored for a 5 second
period.
2
Introduction - Specifications
Frequency Range
100 - 30,000 kHz (0.1 - 30 MHz)
87 - 108 MHz, 118 - 137 MHz
AM, USB, LSB modes (0.1 - 30 MHz)
AM mode only for 118 - 137 MHz
FM mode only for 87 - 108 MHz
Sensitivity: SSB
(10 dB S+N/N)
Less than 0.5 µV, 0.1 - 30 MHz
Sensitivity: AM
(10 dB S+N/N)
(1000 Hz, 30% Mod)
Less than 2.0 µV, 0.1 - 30 MHz
Less than 4.0µV, 118-137 MHz
Sensitivity: FM
(20 dB S/N)
Frequency Stability
Less than 4 µV, 87 - 108 MHz
(monaural)
+/-10 ppm, 00 to 500 C
Frequency Accuracy
Better than +/-100 Hz, @ 250 C
Selectivity- SSB, AM:
6 kHz @ -6 dB, less than 12 kHz
@ -60 dB
4 kHz @ -6 dB, less than 9 kHz
@ -60 dB
2.3 kHz @ -6 dB, less than 5 kHz
@ -60 dB
IF Frequency- SSB, AM:
1st IF 55.845 MHz
2nd IF 455 kHz
FM:
1st IF 10.7 MHz (Single Conversion)
Image Rejection
IF Rejection
Dynamic Range
IP3 - Intercept Point
(@ 50 ohm Ant. input)
(Attenuator Off)
AGC Performance
Greater than 60 dB, 0.1 to 30 MHz
Greater than 60 dB, 118 to 137 MHz
Greater than 50 dB, 87 to 108 MHz
Greater than 80 dB, 55.845 MHz
Greater than 80 dB, 455 kHz
Greater than 95 dB, 0.1 to 30 MHz
@ 20 kHz spacing (SSB, 2.3 kHz BW)
Greater than +10 dBm @ 20 kHz
spacing
Greater than -20 dBm @ 5 kHz
spacing
Threshold: 1.0 µV
Attack Time: 1 mSec.
Release Time - SLOW: 3 sec.
- FAST: 300 mSec.
Less than 4 dB change in audio output
for 100 dB RF input change referenced
from the AGC threshold point.
OPTIONAL ACCESSORY:
MS8 - A complementary styled external speaker.
Internal Antenna 41 inch length telescoping whip
(for use on all bands).
Antenna Inputs:
0.1 - 30 MHz SO-239, 50 ohm connector or 3terminal compression connector for
either 50 OHM or 500 OHM input
with ground.
87 - 108 MHz, 2-terminal compression connector,
118 - 137 MHz 300 ohm balanced input
External Speaker
Output
Line Audio Output
Headphone Jack
2.0 Watts into 4 ohm speaker @ less
than 5 % THD with a 9 VDC supply
voltage. Output is a bridged amplifier,
(DO NOT GROUND).
300 mVolts, 4.7K ohms
1/8 inch stereo/mono type
DC Power
Requirements Input: 7-10 VDC @ 1 Amp, supplied
from AC Adaptor Wall Transformer,
external DC Power Supply or
5.7 to 9.0 VDC supplied by (6)
internally mounted “D” cell (1.5V)
batteries (not supplied).
Current requirements (approximate) from 9.0 VDC
Supply or Batteries with 1/4 W average Audio Output:
MODE
BACKLIGHT
AM
AM SYNC
SSB
FM
OFF
ON
570 mA
600 mA
700 mA
730 mA
600 mA
440 mA
730 mA
570 mA
Operating
Temperature 00 to +500 C
Weight 10 lbs. (includes AC Adaptor)
(batteries NOT included)
Size Width: 11-1/2 “ (29.2 cm)
(including retractable bail)
Height: 5-1/4" (13.3 cm)
(including retractable bail and feet)
Depth: 13" (33 cm), (including
front knobs and rear panel connectors)
Supplied AC Adaptor
Wall Transformer Input: 120 VAC ±10%, 15 Watts
Output: 9 VDC @ 1 Amp maximum
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Introduction - Battery Operation and Installation
3
The SW8 receiver is supplied with an AC adaptor to
power the SW8 indoors. The AC ADAPTOR is
designed to be plugged into a wall outlet that supplies
nominal 120VAC, 60 Hz power. Keep curtains and
other flammable materials out of direct contact with
the AC ADAPTOR to avoid overheating.
The SW8 receiver is designed to operate from either
the supplied AC ADAPTOR or from six "D" cell
batteries (not supplied). NOTE: Check the batteries
periodically for leakage. IF UNIT IS TO BE STORED
OR OTHERWISE NOT USED FOR AN EXTENDED
PERIOD OF TIME, REMOVE THE BATTERIES TO
PREVENT CORROSION AND POSSIBLE DAMAGE
TO THE RECEIVER.
Battery Installation
1) Position receiver with bottom cover up and front
panel towards you.
2) Remove battery access cover by loosening the
thumb screw and sliding cover toward you.
3) Place 6 "D" cell alkaline type batteries into holder.
Make sure the batteries are in the proper polarity
position as illustrated.
4) Replace access cover and tighten the thumb screw
to secure cover and batteries.
NOTE:
The SW8 does not rely on the batteries for retention
of memory channels. To insure that clocks and timers
are maintained following the loss of AC power or
battery removal, the SW8 must first be connected to a
source of AC power or have batteries installed for a
minimum of 10 minutes. If power is lost after this
minimum 'charge' time, clocks and timer settings are
maintained for a time period of approximately 30
minutes.
REAR PANEL OF SW8
BATTERY SUPPLY: 9 VDC
6 X IEC-LR20 OR IEC-R20 OR 'D' CELLS
DO NOT LEAVE BATTERIES IN UNIT
FOR EXTENDED PERIODS.
CHECK BATTERIES OFTEN
Battery Cover
Battery Compartment Cover Thumb
Screw
TOWARD FRONT OF SW8
FIGURE 1 - BATTERY COVER REMOVAL AND INSTALLATION
4
Installation
UNPACKING
Carefully remove the SW8 and included AC Adaptor
wall transformer from the shipping carton and examine
them for evidence of damage. If any damage is noted,
immediately contact the transportation company
responsible for delivery or return the unit to the dealer
from whom it was purchased. Keep the shipping
carton and all packing material for the transportation
company to inspect. The original carton and packing
material should be retained for repackaging should it be
necessary to return the receiver. Inspect the packing
material for any accessories or printed material before
storing the box. Locate the registration card, fill it out,
and immediately return it to the R.L. Drake Company
to insure registration and validation of warranty.
LOCATION
The location of the SW8 is not critical. For added
operating convenience, the carrying handle may be
adjusted to elevate the front of the unit or positioned
behind the front feet. To adjust the handle, disengage
the detents at both sides of the handle at its pivot
points and adjust to desired position until detents are
engaged. To detach (or reinstall) handle from the
receiver, adjust handle to the vertical up position and
bow handle outward at both sides. See Figure 2.
For fixed locations, the SW8 should be operated from
the AC Adaptor. Keep curtains and other flammable
material away from direct contact with the AC Adaptor
to avoid overheating the transformer which could
result in failure or fire.
Vertical Up Position
Side View of SW8
FIGURE 2 - ADJUSTING CARRYING HANDLE
FIXED INSTALLATION
After unpacking the unit, connect the antenna system
to the appropriate antenna input. Connect system
ground to the compression terminal marked ‘GND’.
Plug the output cable of the AC Adaptor into the
‘External DC Input’ connector on the rear panel of the
SW8 receiver. Plug the AC Adaptor into a source of
120 VAC, 60 Hz power. Refer to Figure 3 for the
diagram of a typical fixed installation.
PORTABLE OPERATION
For use in a portable environment, the SW8 is operated from six (6) internally mounted “D” cell batteries.
These batteries are not supplied and must be installed
prior to portable operation of the SW8. See Figure 1
in the `BATTERY INSTALLATION’ section of this
manual. For longest battery life, alkaline batteries are
recommended for this product.
NOTE: REMOVE THE BATTERIES IF THE SW8 IS
TO BE STORED OR OTHERWISE NOT OPERATED
FOR AN EXTENDED PERIOD OF TIME TO AVOID
DAMAGE TO THE SW8 DUE TO POSSIBLE BATTERY LEAKAGE OR CORROSION EFFECTS. The
SW8 does not rely on the batteries for retention of
memory channels. To insure that the clocks and
timers are maintained following a loss of AC power or
battery removal, the SW8 must first be connected to
an AC power source or have batteries installed for a
minimum of 10 minutes. If power is lost after this
minimum 'charge' time, clocks and event timer settings
are maintained for a period of approximately 30
minutes.
ANTENNA REQUIREMENTS
(Refer to Figure 3, page 5)
The SW8 incorporates rear panel switches to select
between the internal whip antenna and various types of
external antennas. The built-in ‘WHIP’ antenna is
available for use on all bands. For 500 kHz to 30 MHz
operation, two antenna connectors are also provided.
‘ANTENNA 1’ is a 50 ohm, SO-239 coaxial input
requiring a mating PL-259 connector. This input would
typically be used as the primary AM broadcast and
shortwave band antenna input. Antennas such as
dipoles, trap dipoles, verticals and beams will provide
the best results depending upon the desired receiving
frequency. ‘ANTENNA 2’ is a compression terminal
type connection, providing a choice of high-impedance
(500 ohms typical) or low-impedance (50 ohms
typical). Antennas such as long wires or end-fed Zepps
will provide the best results. For reception in the 87108 and 118-137 MHz range, the ‘FM/AIR’ terminals
are also provided. Outside TV antennas, folded dipoles
or coaxial antennas will provide the best results with
this input for reception of the FM broadcast and
Aircraft bands. Depending upon the particular type of
antenna feed, connect to one of the 'FM/AIR' terminals
and the 'GND'terminal for an unbalanced 75 ohm
input, or, connect to the two '300 ohm' terminals for a
balanced 300 ohm input. The best antenna for any of
the previously mentioned inputs will depend on the
frequency range and time of day for the particular
signal in question. Refer to publications such as the
ARRL Handbook or ARRL Antenna Manual (available in
most public libraries) for help on selection and/or
construction of the antennas mentioned above.
Installation, continued
LOW IMPEDANCE
ANTENNA
5
BUILT-IN
TELESCOPING
WHIP ANTENNA
HIGH IMPEDANCE
ANTENNA
OR
50 OHM COAXIAL CABLE
OR
PL-259
CONNECTOR
TV/FM
SPLITTER
ANTENNA 1
50
ANTENNA 2
FM / AIR
EXT DC
INPUT
SHORTWAVE
ANTENNA
SELECT
300
9VDC/
1Amp
ON
+
OFF
GND
500
2 WHIP
EXT WHIP
MASTER
POWER
- NOTE CHECK INTERNAL
BATTERIES PERIODICALLY
IF INSTALLED
EXTERNAL
SPEAKER
AIR
SQUELCH
4
/ 8
CAUTION:
BALANCED OUTPUT.
DO NOT GROUND.
BATTERY COMPARTMENT
MADE IN U.S.A.
AC
ADAPTOR
PLUG INTO 120VAC,
60Hz AC POWER
LINE
AUDIO
OUT
50
1
750
FM / AIR
ANTENNA
SELECT
MS8 Speaker
TO
TAPE RECORDER
INPUT
EXTERNAL SPEAKER
DO NOT GROUND
NOTE:
Grounding of either speaker
output wire will limit maximum
available audio output and
damage the SW8.
FIGURE 3 - INSTALLATION DIAGRAM
6
Front Panel Description
Pivot Point of
Telescoping
Whip Antenna
8
5
1
SW8 World Band
Shortwave Receiver
AGC S AM SYNC LSB
+60
+40
+20
9
7
5
3
1
TIMER
MEM
SW
METER
KHz
6.0
TONE
BAND
1
2
BCB
L
H
VOLUME
7
6
and
buttons are the primary tuning controls of the SW8.
Clockwise rotation of the dial increases frequency and
counterclockwise rotation decreases frequency. The
dial also incorporates variable speed tuning. The faster
the dial is rotated, the faster the tuning speed.
The
button increases and the
5
7
8
button decreases
the frequency by fixed steps (10 kHz or
9 kHz, selectable on the AM broadcast band, 5 kHz on
the Shortwave band, 100 kHz on the FM broadcast
band and 25 kHz on the Aircraft band) with each
depression. Pressing and holding either button will
allow continuous stepping up or down as long as the
button is depressed.
' F ', then press the desired function button. With
the SW8 not in the SCAN mode, pressing and holding
the F button locks all keypad entries, display
settings and tuning knob entries.
BCB - Press to select between the AM or FM
BCB
broadcast band. Repeated pressings toggle between
AM and FM. The secondary function of this button is
the digit ‘1’.
1
AIR - Press to select the Aircraft band. The
AIR
secondary function of this button is the digit ‘2’.
2
6
F
BW
SCAN
MEM
ATT
AGC
9
LAMP
STORE
VFO
DEL
SKIP
CLEAR
BEEP
TIMER
CLOCK
3
2
SW - Press to select the Shortwave band. The
SW
secondary function of this button is the digit ‘3’.
3
AM SYNC - Press to select the AM mode of
operation. Successive depressions toggles the synchroAM
nous detector on and off. Press 4SYNC
to turn the
synchronous detector off before selecting SSB modes.
The ‘AM/AM SYNC’ modes are not accessed in the FM
band. The 'AM SYNC' mode is not accessible in the
Aircraft band. The secondary function of this button is
the digit ‘4’.
4 AM
SYNC
SSB - Press to select the SSB mode of operation
SSB
('SYNC' must be turned off). Successive depressions
select alternately the ‘LSB’ or ‘USB’ modes as displayed. The SSB mode of operation is not accessed in
either the FM or Aircraft band modes. The secondary
function of this button is the digit ‘5’.
5
BW - The bandwidth setting can be programmed
to be automatic with mode selection or manual. The
default setting is for automatic selection. Press to
select the desired bandwidth: 6.0 kHz, 4.0 kHz or
2.3 kHz. This function has no action in the FM mode.
The 6.0 kHz bandwidth is automatically selected in the
AM mode. The 2.3 kHz bandwidth is the default for
the SSB modes. All three bandwidths are selectable by
successive depressions of this button for the AM
broadcast, Shortwave and Aircraft bands. To disable
the automatic bandwidth selection with mode, start in
the POWER 'OFF' mode and press and hold the 6 BW
button while pressing the POWER button to put the
SW8 in the POWER ‘ON’ mode. To enable the
automatic bandwidth selection with mode operation,
repeat the same procedure. The secondary function
for this button is the digit ‘6’.
6
3)Program Buttons F
(Function) - Pressing this button accesses the
secondary functions, printed in orange, on the program
buttons. Press the F button first to display
SW
SSB
4
1)Display - The backlit, liquid crystal display provides
the current status of the SW8 such as frequency,
mode, bandwidth, etc. Refer to the 'FRONT PANEL
DISPLAY' section of this manual for a full description.
2)TUNING (VFO) - The dial and the
4 AM
SYNC
0
POWER
push
TUNING
3
AIR
BW
Front Panel Description, continued
7
ATT - Press to turn on the built-in 20 dB attenuator to reduce the received signal strength in the AM
broadcast and Shortwave bands as required. The
attenuator is not active in the FM and Aircraft bands.
Successive depressions of the button toggles the
attenuator on and off. The secondary function of this
button is the digit ‘7’.
ATT
8
AGC
AGC - Press to select either the Slow or Fast
AGC setting for the AM broadcast, Shortwave and
Aircraft bands. The AGC is not selectable in the FM
mode. The secondary function of this button is the digit
‘8’.
9
LAMP
LAMP - Press to turn the display backlighting on
or off. With internal battery operation, the backlighting
automatically turns off after a short delay following a
function change or retuning of the receiver to prolong
battery life. Also, the receiver senses Battery or AC
operation, and allows the lamp to remain lit if on AC.
The secondary function of this button is the digit `9'.
0
DEL
DEL - Press and hold for three seconds to delete
a selected memory channel. Audible beep indicates that
the selected memory channel has been deleted. The
secondary function of this button is the digit ‘0’.
SKIP - In the memory mode, press to skip the
current memory channel for a Scan operation. An ‘S’
will be displayed to the right of the selected memory
channel number. When an ‘S’ is displayed next to a
selected memory channel number, press this button to
restore the memory channel for scan operation. The
secondary function of this button is the decimal point
(‘.’) which is used when entering a frequency.
SKIP
CLEAR/BEEP - The ‘beep’ tone is provided to
indicate that entries have been accepted or to notify of
error. Press this button to enable or disable the 'beep'.
CLEAR
BEEP
Pressing the F button first, clears an incorrectly
entered frequency or other value.
SCAN/MEM - To recall a memory channel at any
time, press the ‘MEM’ button and within three seconds
of the button depression, enter a two-digit number
between ‘00’ and ‘69’. With ‘MEM’ displayed, other
adjacent memory channels can be recalled by use of the
/ buttons. The Tuning wheel may be used to tune
from the recalled frequency of the selected memory
channel. Please note that digit entries are interpreted as
frequency entries if the ‘MEM’ channel number is not
SCAN
MEM
flashing. Pressing the F button first, starts scanning
of the current block of 10 channels. The receiver will
stop at each programmed channel for 5 seconds, then
increment to the next memory channel. Channels
programmed for 'SKIP' will not be scanned.
Press this button to stop the scan operation.
7
STORE/VFO - Press to place receiver in the normal
variable frequency tuning mode (VFO). Select desired
frequency, mode, attenuator, Synchronous detector, AGC,
bandwidth, etc. Pressing the F button first, followed
button, switches the keypad to
by depression of the STORE
VFO
the numeric mode. The ‘MEM’ symbol will flash in the
display. Enter a two digit number between '00' and '69'
for the desired memory channel. An audible beep will
indicate that the memory channel has been stored with the
newly entered settings.
STORE
VFO
TIMER/CLOCK - Pressing this button once will
display the current time of the current clock. After three
seconds, the display will revert to the current frequency.
Pressing and releasing this button while the time is
displayed will toggle the time display between the two
clocks (local or alternate). The timer will operate according to the last displayed clock time. See the 'SETTING
THE 24 HOUR CLOCKS' section of this manual. Pressing
the F button first, followed by the TIMER button, will
activate the timer mode. If the Timer has been activated,
the ‘TIMER’ symbol will be displayed even after the
receiver is turned off. Receiver will automatically turn on
and off as programmed. See the “SETTING TIMER ON/
OFF TIMES” section of this manual.
TIMER
CLOCK
4) VOLUME/POWER - Push in on this control to turn the
receiver On or Off. With receiver power on, adjust this
control clockwise to increase the audio level from the
receiver’s speaker. Be certain to leave the volume setting
at the desired level for TIMER use. The POWER switch
may be disabled by the rear panel 'MASTER POWER'
switch. See the 'Rear Panel Description' section of this
manual.
5) TONE - This control is used to modify the tonal quality
of the audio. Counterclockwise rotation increases the bass
response. Flat response occurs at the 12 O’Clock setting.
Clockwise rotation increases the treble response.
6) SPEAKER - This is the opening for the internal speaker
of the SW8.
7) HEADPHONE JACK - This connector accepts a 1/8"
stereo/mono headphone connector. Stereo reception is
possible only in the FM mode. All speaker outputs are
automatically switched off when using the headphones.
8) WHIP ANTENNA - The receiver has a built-in telescoping antenna that can be used on all bands. Note that
the pivot point section of the antenna must be exposed
out of its nesting tube to permit vertical extension of the
antenna. Extend the telescoping sections and position the
antenna for best signal reception. Be sure the corresponding rear panel antenna select switch is set to the 'WHIP'
position for WHIP antenna reception.
8
Front Panel Display
1
2
3
4
LOCK
+60
+40
+20
9
7
5
3
1
TIMER
ON OFF
5
6
7
8
15
10
BATT AGC SF AM SYNC USB FM
F
MEM
SCAN
S AIRSW
L
ST
6.0 4.0 2.3
16
9
11
METER
12
KHz
MHz
14
1) Bar Graph - This bar graph display indicates the
relative received signal level in S-units and dB above S9.
Each S-unit between S1 and S9 equals an approximately
5 dB change in received signal strength. Each S-unit
above S9 equals an approximately 10 dB change in
received signal strength.
2) TIMER - This annunciator indicates the state of the
Timer as either Active or Inactive. Refer to the
'CLOCK AND TIMER FUNCTIONS' section of this
manual.
3) LOCK - When illuminated, this annunciator
indicates that the Main tuning wheel and keypad are
not active.
4) F Indicates that the F button has been pressed
on the keypad to enable the alternate functions
(printed in orange) of the keypad buttons to be active.
5) MEM
- This annunciator indicates current
memory location from 00 to 69. MEM will light when
the receiver enters the memory mode. Refer to the
'MEMORY FUNCTIONS' section of this manual.
6) BATT - When operating on internal batteries,
'BATT' blinks to indicate a low charge on batteries.
ATT Indicates that the built-in attenuator is activated.
7) AGC SF - Indicates the AGC setting, Slow or Fast.
8) AM SYNC - Indicates that the AM mode of reception is on. If SYNC is also illuminated, then the
synchronous AM mode of detection is on.
9) USB - Indicates that the Upper sideband mode of
detection is on.
LSB Indicates that the Lower sideband mode of
detection is on.
10) FM - Indicates that the FM mode of detection is
on. This mode is selectable only on the FM broadcast
band (87 - 108 MHz).
13
11) SW
METER - Indicates the Shortwave
band designators that define a range of frequencies for
each band as follows:
Shortwave Band Designators
120 METER: 2300 - 2500 kHz
90 METER: 3200 - 3400 kHz
75 METER: 3900 - 4000 kHz
60 METER: 4750 - 5060 kHz
49 METER: 5800 - 6200 kHz
41 METER: 7100 - 7600 kHz
31 METER: 9500 - 9900 kHz
25 METER: 11600 - 12100 kHz
22 METER: 13570 - 13870 kHz
19 METER: 15100 - 15800 kHz
16 METER: 17480 - 17900 kHz
13 METER: 21450 - 21850 kHz
11 METER: 25600 - 26100 kHz
12) AIR - Indicates that the Aircraft band (118 - 137
MHz) has been selected.
13) 7-Digit Readout - This display indicates the
operating frequency of the receiver. The frequency is
displayed in 'kHz' for the AM broadcast and Shortwave
bands. The FM and Aircraft band frequencies are
displayed in ‘MHz’. In the clock mode, these digits
indicate time in 24 hour format i.e. HH:MM. In the
TIMER mode, indicates time in 24 hour format i.e.
HH:MM. 'L' Indicates that Local Time is being displayed in the clock mode. If the 'L' is not illuminated,
alternate time is displayed in the clock display mode.
14) SCAN
S - Indicates that the receiver is in the
memory channel SCAN mode and displays the number
of the currently scanned channel, from 00 to 69. In the
MEMORY mode, the 'S' illuminates to indicate that a
particular memory channel will be skipped over when
the SCAN operation is activated.
15) 6.0 4.0 2.3 - Indicates which IF filter is selected.
There is no indication in the FM mode.
16)
ST
- Indicates that a stereo FM broadcast
station is tuned in when stereo headphones are
plugged into the receiver’s headphone jack.
Rear Panel Description
1
2
3
4
5
6
7
8
9
9
ANTENNA 1
50
ANTENNA 2
FM / AIR
EXT DC
INPUT
SHORTWAVE
ANTENNA
SELECT
300
9VDC/
1Amp
ON
+
OFF
GND
4
75
500
FM / AIR
ANTENNA
SELECT
LINE
AUDIO
OUT
EXTERNAL
SPEAKER
AIR
SQUELCH
50
/
1
2 WHIP
MASTER
POWER
EXT WHIP
4
/ 8
CAUTION:
BALANCED OUTPUT.
DO NOT GROUND.
10
MADE IN U.S.A.
BATTERY COMPARTMENT
1) EXT DC INPUT - Connect the AC Adaptor wall
transformer output cable to this connector. The SW8
requires 9 VDC power at approximately 1 Amp
current. With external DC power applied, the internal
batteries are not used.
2) ANTENNA 1 - This connector is used when
attaching receiving antennas with coaxial feed lines of
50 ohm nominal impedance. Accepts a standard
PL-259 plug. If selected by the ‘Shortwave Antenna
Select’ switch (Item 5), this input operates for the AM
Broadcast and Shortwave (100 kHz to 30 MHz) bands
only.
3) FM/AIR Antenna - This input is designed for either
an unbalanced 75 ohm input connection that is encountered with coaxial feeds, for example, or, for a two
terminal balanced antenna feed with 300 ohm nominal
impedance. Connect to the FM connection of a TV/FM
outdoor antenna feed (splitter), if available. Folded
dipoles or coaxial antennas will also provide good
results with this input for reception of the FM broadcast and Aircraft bands. Depending upon the particular
type of antenna feed, connect to one of the ‘FM/AIR’
terminals and the ‘GND’ terminal for an unbalanced 75
ohm input, or, connect to the two ‘300 ohm’ terminals
for a balanced 300 ohm input. If selected by the ‘FM/
AIR Antenna Select’ switch (Item 6), this input operates
for the FM broadcast (87-108 MHz) and the Aircraft
(118-137 MHz) bands only.
4) ANTENNA 2 - This connector can be used to
attach either a low impedance (50 ohm nominal) or
high impedance (500 ohm nominal) antenna. Use the
‘GND’ and ‘50 ohm’ terminals for a 50 ohm antenna;
use the ‘GND’ and ‘500 ohm’ terminals for a 500 ohm
antenna. If selected by the ‘Shortwave Antenna Select’
switch (Item 5), this input operates for the AM Broadcast and Shortwave (100 kHz to 30 MHz) bands only.
5) SHORTWAVE ANTENNA SELECT - This switch
selects one of three possible antennas to be used for
the 100 kHz to 30 MHz antenna input. The WHIP
antenna is built-in to the receiver and is located at the
upper left-hand corner of the receiver’s front panel.
‘ANTENNA 1’ and ‘ANTENNA 2’ are described in
Items 2 and 4 on this page.
6) FM/AIR ANTENNA SELECT - This switch allows
selection of either the built-in WHIP antenna, or the
external 75 ohm antenna or 300 ohm antenna connected at the ‘FM/AIR’ terminals (Item 3) for the 87-108
MHz and 118-137 MHz frequency ranges.
7) LINE AUDIO OUT - This RCA connector provides
a constant low level audio source that is independent of
the front panel volume and tone control settings. It is
designed to interface to a tape recorder, CW/RTTY
demodulators, amplifiers, etc.
8) EXTERNAL SPEAKER - This connector accepts a
standard 1/4" diameter, 2-circuit, (monaural) phone
plug for connection of an external 4/8 ohm speaker.
DO NOT GROUND!
NOTE: Grounding of either speaker output wire will
limit maximum available audio output and damage the
SW8.
9) AIR SQUELCH - This control is operational only for
the Aircraft band. The control allows muting of the
receiver's audio when no signals are present. Adjust
the control until background noise just disappears
when no signal is being received.
10) MASTER POWER - This is a master power switch
which protects against accidental activation of front
panel power control. If the receiver is operated on
batteries and is not to be used for an extended period
of time, set this switch to the 'OFF' position. For
normal usage of on/off power control from the front
panel, set the 'MASTER POWER' switch to the 'ON'
position.
10
Getting Started
Whip Antenna
SW8 World Band
Shortwave Receiver
AGC S AM SYNC LSB
+60
+40
+20
9
7
5
3
1
TIMER
MEM
SW
METER
KHz
6.0
TONE
BAND
1
2
BCB
L
H
VOLUME
POWER
push
Tone
Power/Volume
GENERAL OPERATING INFORMATION
The SW8 has been designed for ease of use. Please
take a few moments to read through this section and
familiarize yourself with general operating information.
MICROPROCESSOR RESET
A power-up reset routine will be activated anytime
after the SW8 COMPLETELY loses power, either
internal batteries or external DC input. This will be
observed by the front panel display illuminating all
annunciators for 3 seconds, followed by the clock
display. However, short term power failures of up to
30 minutes are masked by an internal back-up capacitor. This will allow ample time for battery replacement
without loss of the internal clock. Note: Any
programmmed memory locations will NOT be lost
under a power-up reset due to the memory design of
the SW8.
BEEP TONES
The SW8 responds to all key depressions with an
audible beep unless the beep has been disabled by the
button. No beep is generated under any
condition for depressions of the TUNING keys. Beep
tones indicate the following:
One short tone for a key depression.
One long, high tone when storing a memory channel.
One long, low tone for any illegal key depression.
CLEAR
BEEP
GETTING STARTED
Please refer to the front panel illustrations and set the
controls as shown.
1) Install 6 “D” batteries or connect AC adaptor.
2) Fully extend whip antenna, adjust to a vertical
position and engage in holder, or connect an external
antenna to appropriate rear panel terminals. Set rear
panel 'ANTENNA SELECT' switch(es) to appropriate
position(s).
TUNING
3
AIR
4 AM
SYNC
5
7
8
F
SW
6
SSB
BW
SCAN
MEM
ATT
AGC
9
LAMP
STORE
VFO
DEL
SKIP
CLEAR
BEEP
TIMER
CLOCK
0
Numeric Keypad
Tuning Keys
Tuning Knob
3) Press POWER and adjust VOLUME to comfortable
level.(NOTE: Be sure the 'MASTER POWER' switch
on the rear panel is in the 'ON' position.)
4) Select the desired band by pressing one of the
1
, 2 AIR , or 3 SW buttons.
BCB
5) Enter the desired frequency by using one of several
methods covered below.
DIRECT FREQUENCY ENTRY
Direct entry of a desired frequency is possible using the
orange numeric keys 0-9 and decimal key. While
entering a frequency, if an incorrect frequency is
button will clear the entry
entered, pressing the CLEAR
BEEP
in progress and return the SW8 to its previous settings.
** The second depression of the decimal SKIP button
acts as an ‘ENTER’ and causes immediate response to
the entered frequency. If you do not press the decimal
button a second time at the end, the SW8 will
SKIP
automatically enter the frequency after a slight delay.
Press the F button to shift keyboard to numeric
entry.
Enter frequency as follows:
A) Shortwave and AM broadcast enter in kHz (kilohertz). A maximum of 6 digits may be entered.
Example:
700 kHz
Press
F
7
**
0
0
ATT
DEL
AIR
9
LAMP
DEL
SKIP
SKIP
29660 kHz
Press
F
2
6
6
BW
**
0
BW
DEL
SKIP
SKIP
Getting Started, continued
14258.1 kHz
Press
1
F
AIR
1
8
5
2
4 AM
SYNC
BCB
AGC
SSB
SKIP
OR
F
1
BCB
4 AM
SYNC
AIR
1
8
5
2
BCB
AGC
SSB
*
* When the maximum number of allowed digits is
entered, the decimal point will be automatically placed
between the 1 kHz and .1 kHz digits and need not be
entered.
B) Aircraft and FM broadcast enter in MHz (megahertz). A maximum of 5 digits may be entered for FM.
A maximum of 7 digits may be entered for Aircraft.
Example:
BCB
SHORTWAVE ‘METER’ BAND DESIGNATOR
ENTRY
To facilitate tuning to particular sections of the shortwave band that contain many worldwide broadcasts of
news, information and music, the SW8 permits entry of
the ‘METER’ band designator. In some cases, the
worldwide broadcast station may not announce its
exact operating frequency, but will announce the
‘METER’ band in which it is operating or to which band
it will move to improve worldwide reception at a
particular time of day. By entering this ‘METER’ band
number, the SW8 automatically tunes to the low
frequency end of the corresponding ‘METER’ band.
The search for the new station location is thus limited
to a particular smaller section of the entire shortwave
band spectrum. The Shortwave Band Designators and
corresponding frequency range is as follows:
Shortwave Band Designators
120 METER: 2300 - 2500 kHz
90 METER: 3200 - 3400 kHz
75 METER: 3900 - 4000 kHz
60 METER: 4750 - 5060 kHz
49 METER: 5800 - 6200 kHz
41 METER: 7100 - 7600 kHz
31 METER: 9500 - 9900 kHz
25 METER: 11600 - 12100 kHz
22 METER: 13570 - 13870 kHz
19 METER: 15100 - 15800 kHz
16 METER: 17480 - 17900 kHz
13 METER: 21450 - 21850 kHz
11 METER: 25600 - 26100 kHz
97.7 MHz
Press
9
LAMP
F
**
7
7
ATT
SKIP
ATT
SKIP
SKIP
9
LAMP
121.9 MHz
Press
F
2
1
BCB
1
AIR
BCB
**
SKIP
** The second depression of the decimal SKIP button
acts as an ‘ENTER’ and causes immediate response to
the entered frequency. If you do not press the decimal
button a second time at the end, the SW8 will
SKIP
automatically enter the frequency after a slight delay.
Attempting to enter a frequency outside the tuning
range of the SW8 will cause the ERROR annunciator to
flash along with the error beep to be heard. The SW8
will then return to its previous settings.
Downloaded by
Amateur Radio Directory
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11
3
Press the SW button to enter the shortwave band
tuning mode. At this point, you can enter a frequency
with the numeric buttons, or use the Tuning wheel
and’ or
buttons to change frequency.
To enter a shortwave band ‘METER’ designator, press
the 3 SW button a second time to display a flashing
‘METER’ number entry prompt. Enter one of the
listed two or three digit numbers corresponding to the
desired ‘METER’ band designator using the numeric
buttons. While the 'METER' annunciator is flashing, the
and
buttons can also be used to step
quickly from band to band. After selection of the
Meter band, use the Tuning wheel or
and
buttons to change the frequency, or press the F
button followed by the desired numeric frequency
entry.
12
Getting Started, continued
FREQUENCY RESOLUTION
The SW8 tunes in the following steps:
Mode
Broadcast
Band:
AM
Shortwave
Band:
AM
USB, LSB
FM
AIR
Display
Resolution
Tuning
Resolution
100 Hz
100 Hz
10 kHz/9 kHz
100 Hz
100 Hz
10 kHz
100 Hz
100 Hz
50 Hz
20 kHz
100 Hz
5 kHz
5 kHz
100 kHz
25 kHz
FRONT PANEL LOCK (UNLOCK)
All keyboard entries, display settings, and entries from
the tuning knob can be locked if desired. First, be sure
the SW8 is not in SCAN. Press and hold the F
button. The LOCK annunciator will light indicating the
front panel controls are locked out. Power ON/OFF will
still function as well as volume and tone controls. Press
and hold the F button to unlock.
AM SYNCHRONOUS OPERATION
For general tuning and listening, normal AM is best. If,
however, the received signal sounds distorted, or
interference from adjacent stations is present, AM
synchronous should be engaged. The synchronous
detector in your receiver can greatly reduce the severe
audio distortion that can occur due to signal fading. The
detector also permits selectable tuning to either the
upper or lower sideband portion of an AM signal. Since
most all AM (LW, MW and SW) broadcasting generally
uses double-sideband transmission, detection of either of
the two sidebands results in full reception of the transmitted information. The selectable sideband tuning and
detection not only aids reception by permitting tuning to
the stronger or less distorted sideband, but also permits
rejection of the sideband nearer to the interfering
signal(s). For Example:
Select LSB to
receive this
side only
CARRIER
LSB
USB
interference from
adjacent station
The synchronous detector will lock to the strongest
signal that is within the IF passband when it is activated.
Most of the time, the strongest signal will be the carrier
of the desired signal. First, be sure the main tuning is set
to within 1 kHz of the desired station’s transmitting
AM
frequency. Press the 4SYNC
button to activate synchronous operation. If adjacent channel interference or any
other undesired signal is sufficiently strong, the synchronous detector may lock to it instead. In that case, press
AM
the 4SYNC
button to turn the synchronous detector off
and repeat the tuning process. For severe cases of
fading, set the audio bandwidth to 4 kHz. If interference
is present, press the SSB button to select the sideband
with the least interference. If the interference is sufficiently severe to prevent reception, select a narrower IF
bandwidth and retune to the desired signal. After
reception is obtained, select a wider bandwidth and/or
alternate sideband if desired. When AM/SYNC has been
activated, moving the main tuning knob will cause the
SYNC circuit to momentarily disengage (indicated by
‘SYNC’ flashing), then back on again when tuning has
stopped. AM SYNC does not function on the AIR band,
and will not operate properly on intermittent transmissions such as those encountered on CB radio bands, for
example. For those types of transmissions, use the AM
AM
button to turn the synchronous
mode. Press the 4SYNC
detector off before selecting LSB or USB modes.
SSB OPERATION
Tuning in a single sideband (SSB) signal can be somewhat
frustrating for the first time listener. In either of the
SW8’s SSB modes, LSB (lower sideband), or USB (upper
sideband), the receiver will select the 2.3 kHz bandwidth
automatically (the SW8 may be programmed to NOT
automatically select a bandwidth. Refer to 'Automatic
Bandwidth Setting With Mode Selection DISABLE
(ENABLE)' in the 'Special Use Features and Functions'
section of this manual). Generally, LSB is used below 10
MHz and USB is used above 10 MHz. When initially
tuning in the desired station, tune slowly. If the station is
unintelligable, try the other sideband, again tuning slowly.
A station tuned in on the wrong sideband is totally
unreadable but a station mistuned on the correct
sideband may sound like ‘Donald Duck’. Further tuning
will result in a more normal voice pitch.
FM OPERATION
FM reception is perhaps the easiest mode to use on the
SW8. The AGC and BANDWIDTH settings are not used
in FM. In fact, attempting to activate these buttons will
result in an ‘ERROR’ beep. All FM stations in the U. S.
end in an odd 100 kHz, i.e., 97.7 MHz, and are spaced
200 kHz apart. The SW8 has the ability to tune in 20 kHz
steps to allow tuning in between stations to help eliminate interference to weaker stations that could be
covered up by stronger adjacent stations. Additionally,
when headphones are used, true stereo reception is
possible. The front panel S T annunciator will light
when a stereo station is tuned in with the stereo headphones plugged in. The SW8 will automatically switch to
stereo and provide left and right audio from the headphone jack only. If the headphones are removed while
listening to a stereo broadcast, the SW8 reverts to
monaural audio from the internal or external speaker.
AGC OPERATION
The SW8 provides the ability to select a Slow or Fast
AGC setting. Either of the two settings will permit
automatic control of the receiver’s gain thereby producing a constant audio output free of distortion. Generally,
the Slow AGC setting is preferred for reception of AM
and SSB signals. The Fast AGC setting allows more rapid
automatic receiver gain adjustment to quickly fading
signal levels.
The AGC does not function in the FM mode.
Memory Functions
13
SW8 World Band
Shortwave Receiver
AGC S AM SYNC LSB
+60
+40
+20
9
7
5
3
1
TIMER
MEM
SW
METER
KHz
6.0
TONE
BAND
1
2
BCB
L
H
VOLUME
POWER
push
MEMORY FUNCTIONS
The SW8 contains 70 memory locations that can be
used to store and recall commonly monitored frequencies. These 70 locations are divided into blocks of 10,
ie. 00-09, 10-19, 20-29, etc. This allows convenient
grouping of frequencies. As an example, 00-09 could
be AM broadcast stations, 10-19 could be FM broadcast stations, 20-29 could be various time stations such
as CHU and WWV, etc. With memory locations
programmed, you can use the scan function to automatically monitor desired memory frequencies. The
following operating parameters may be stored in any
memory location:
1) Frequency 2) Mode 3) Bandwidth 4) AGC setting
5) Attenuator 6) Synchronous detector
MEMORY LOCATION PROGRAMMING
First, be sure that the SW8 is in the VFO mode (MEM
or SCAN not displayed). If required, press the STORE
VFO
button to place unit in the VFO mode.
A) Select the desired frequency, mode, bandwidth, etc.
B) Press the F button and then the STORE
button
VFO
(switches keypad to the numeric mode). ‘MEM’ will
light and the memory channel number will flash.
Within three seconds, enter a two-digit number from
00-69. A confirmation beep is heard.
C) The SW8 will return to the VFO mode and the last
used memory location is displayed in the ‘MEM’
portion of the display.
TUNING
3
AIR
4 AM
SYNC
5
7
8
SW
6
F
SSB
BW
SCAN
MEM
ATT
AGC
9
LAMP
STORE
VFO
DEL
SKIP
CLEAR
BEEP
TIMER
CLOCK
0
RECALLING A MEMORY LOCATION
To select a specific memory channel, press the
button and then enter a two digit number of the
desired memory channel to be recalled. Make certain
that the successive button depressions are made within
3 seconds of each other. Other memory channels may
be selected by pressing the
button and entering
two digit numbers. If a channel number is selected that
is empty, 'Error' will flash.
SCAN
MEM
SCAN
MEM
The large rotary tuning control may be used to tune
from the frequency that was stored in the selected
memory channel. The `MEM’ symbol turns off, but
the last memory channel number still shows. Pressing
the
button, causes the receiver to return to the
last selected memory channel number and the `MEM’
symbol turns on.
SCAN
MEM
DELETING A MEMORY LOCATION
Select the memory channel to be deleted as described
in ‘RECALLING A MEMORY LOCATION’. Press and
hold the 0 DEL button for three seconds. Beep will be
heard to indicate that the contents stored in the
selected memory channel number have been deleted.
14
Scan Functions
The SW8 provides a time scan function of programmed
memory channels using the F button and
SCAN
button. Scan will begin and end within a 10
MEM
channel block of programmed memory channels as
indicated by the most significant digit of the selected
memory channel number.
Block
Number
Memory Channel
Scan Range
0
1
00 - 09
10 - 19
2
3
20 - 29
30 - 39
4
5
40 - 49
50 - 59
6
60 - 69
The receiver will stop at each programmed memory
channel within the block for 5 seconds and then
increment to the next memory channel. Memory
channels that are programmed to be skipped will not
be scanned. The ‘SCAN’ symbol will be displayed for
the duration of the scan action. Scanning will continue
until the SCAN
button is pressed again.
MEM
Example for SCAN:
Suppose that memory channels 30 through 39 are
programmed and it is desired to scan these channels.
To initiate the scan action,
button followed by the two-digit
Press the SCAN
MEM
channel number entry (can enter 30 through 39 for this
example).
Press the F button followed by SCAN
. The receiver
MEM
will begin scanning from the selected memory channel
and continue scanning in sequence: ‘30’ - ‘31’ - ‘32’ etc.
Press the
SCAN
MEM
button to stop the scanning action.
Note that if channels 29 and 40 were stored, they
would not be included in a scan of the channels starting
with a ‘3’ as the most significant digit of the channel
number.
MEMORY CHANNEL SKIP
A memory channel can be skipped for scan operations.
While in the MEMORY mode, press the SKIP button.
The display will indicate that the ‘SKIP’ function has
been stored for that particular memory channel
number. An ‘S’ will be displayed to the right of the
memory channel number on the display. Repeat the
same sequence as described to remove the ‘SKIP’
function from a memory channel number.
Example for MEMORY CHANNEL ‘SKIP’:
Refer to the previous example on this page. Suppose it
is desired to skip the memory channel number ‘34’
from the scan action:
From the normal variable frequency tuning and
reception mode (VFO) or from the Memory mode,
button followed by the two-digit
press the SCAN
MEM
number ‘34’.
Press the SKIP button. An ‘S’ will illuminate to the right
of the displayed ‘34’. When the scan action is initiated,
all channel numbers 30 through 39, except 34, will be
scanned. Note that the memory contents of channel
34 still remain, it is skipped over only in the scan
sequence.
To allow channel 34 to again be included in the scan
sequence,
Press the SCAN
button followed by the two-digit
MEM
number ‘34’.
Press the SKIP button to remove the ‘SKIP’ function
from channel 34 for this example. The ‘S’ indicator in
the display will turn off.
Clock and Timer Functions
15
SW8 World Band
Shortwave Receiver
AGC S AM SYNC LSB
+60
+40
+20
9
7
5
3
1
TIMER
MEM
SCAN
SW
L
METER
KHz
6.0
TONE
BAND
1
2
BCB
L
H
VOLUME
POWER
push
TIME DISPLAY
The SW8 incorporates a dual time clock allowing two
24 hour clocks to be set and maintained. During loss
of AC power, or during battery changing, clock
operation is maintained for a period of approximately
30 minutes, if the SW8 has been connected to an AC
power source or had the batteries installed for a
minimum time of 10 minutes. The two-event timer
functions are also derived from the last displayed clock,
therefore the clocks must be set first for proper
TIMER operation. TIMER Settings are also maintained
through a power loss for a period of approximately 30
minutes.
button once will display the current
Pressing the
time of the current clock. After approximately 3
seconds, the display will revert to the current frebutton while
quency. Pressing and releasing the
time is being displayed will toggle the time display
between the two clocks. Normally the clock accompanied by the 'L' on the display will be set with the local
time, while the alternate clock will be set to display
GMT (UTC) time.
The SW8 will display the selected clock when the
POWER switch is turned off.
TIMER
CLOCK
TIMER
CLOCK
SETTING THE 24 HOUR CLOCKS
Select local (‘L’) or alternate time clock by pressing the
TIMER
CLOCK
button.
Press and hold the
button for three seconds until
the colon begins flashing rapidly. If the ‘L’ is illuminated, you are setting the local clock. With no ‘L’
displayed, you are setting the alternate clock. The
keyboard is automatically set up for the shifted (‘F’)
function numeric digit entries in this clock setting
mode. Either clock can be set first. Time is entered in
a 24 hour format. Enter the time in ‘HH:MM’, with the
‘colon’ understood.
The CLEAR
button can be pressed to erase erroneous
BEEP
entries.
TIMER
CLOCK
TUNING
3
AIR
4 AM
SYNC
5
7
8
SW
6
F
SSB
BW
SCAN
MEM
ATT
AGC
9
LAMP
STORE
VFO
DEL
SKIP
CLEAR
BEEP
TIMER
CLOCK
0
Press the F button to start the clock when the
actual time value agrees with the entered time. Colon
will flash at one second intervals when clock is running.
Example for Local Clock Set:
With frequency displayed, suppose it is desired to set
‘13:01’:
button until the colon flashes
Press and hold the
rapidly.
Press the following sequence of numeric buttons:
TIMER
CLOCK
3
1
0
SW
BCB
1
DEL
00:01
00:13
01:30
When the actual time is 13:01, Press the
The clock is now started.
L
L
BCB
L
L
F
13:01
button.
TIMER OPERATION
The SW8 includes two programmable event timers
allowing the SW8 to turn ON or OFF at preset times.
The timers may be used separately or together and
may recall a currently displayed frequency, memory
channel or a combination of both. In addition, programming only an OFF time provides a Sleep timer;
programming only an ON time provides a Wake timer.
Note that the timers, when activated, respond to the
last displayed clock.
Programming the timers is a two step process. Step
one is to set the ON and OFF times. Step two is to
assign a frequency or memory channel to a timer. This
assignment occurs when the desired timer is actually
enabled.
SETTING TIMER ON/OFF TIMES
Press the F button and then hold the CLOCK button
for approximately 2 seconds until the ‘TIMER’ annunciator turns on and 'ON' flashes. The ‘On' Time’ will
also be indicated in the frequency portion of the display
(same readout format as the clock) as well as the
number ‘1’ or ‘2’ displayed to the right of the time.
The number ‘1’ or ‘2’ indicates which one of the two
event timers you are programming.
TIMER
16
Clock and Timer Functions
Press the desired numeric buttons to enter a new ‘ON’
time. Enter the time in ‘HH:MM’ and in 24 hour format.
Press the BEEP button to remove the ‘On Time’ to use
the timer as a Sleep timer. For a Wake timer, program
an 'On Time' and remove the 'OFF' time.
To set the ‘OFF’ time, Press the
button again to
display ‘OFF' time.
Press the desired numeric buttons to enter a new ‘OFF’
time. Enter the time in ‘HH:MM’ and in 24 hour format.
CLEAR
TIMER
CLOCK
Press the
desired.
CLEAR
BEEP
Press the
time.
TIMER
CLOCK
Press the
time.
TIMER
CLOCK
button to remove the ‘OFF’ time, if
ENABLING/DISABLING TIMER OPERATION
TIMER
Press the F button followed by the CLOCK
button.
The ‘TIMER’ symbol will light in addition to either or
both the timer ‘1’ or timer ‘2’ indication. After two
seconds with no entry, the display reverts back to
frequency readout.
Timer ‘1’ can be disabled/enabled by pressing the
on the keypad while the timer
numeric digit
enable display is showing.
Timer ‘2’ can be disabled/enabled by pressing the
on the keypad while the timer
numeric digit
enable display is showing.
1
BCB
2
AIR
button again to enter TIMER 2 'ON'
button again to enter TIMER 2 'OFF'
Prior to enabling either or both timers, consider one of
two possible cases for each timer:
eg.) - To Enable TIMER '1' —
Finally, press the
button to save the settings and
switch the display to normal readout values.
1) '-' is displayed: Press the
display '1'.
1) Example for Setting Timer ‘1’
2) '1' is displayed: Press the
again display '1'.
TIMER
CLOCK
With frequency displayed, suppose it is desired to set
Timer ‘1’ for a local ON Time: ‘16:59’
OFF Time: ‘18:01’
Action:
TIMER
.
Press F and then hold CLOCK
+60
+40
+20
9
7
5
3
1
FM
1
BCB
,
6
BW
,
,
5
SSB
AGC
F
9
LAMP
L
Press
F
1
BCB
,
AGC
8
AGC
,
0
DEL
,
1
BCB
FM
TIMER
OFF
F
AGC
FM
TIMER
ON
L
If it is desired to set 'Timer 2', use the same procedure as
that for 'Timer 1', otherwise,
,
to exit setting Timer operation and
Press
return to normal frequency display.
TIMER
CLOCK
Timers '1' and '2' Enabled
F
AGC
FM
TIMER
+60
+40
+20
9
7
5
3
1
F
AGC
FM
TIMER
L
TIMER
CLOCK
+60
+40
+20
9
7
5
3
1
button twice to
Timer '1' Enabled; Timer '2' Disabled
TIMER
CLOCK
+60
+40
+20
9
7
5
3
1
BCB
1
It is important to note that the timer is enabled only
when the timer is deliberately changed from a ‘-’ to ‘1’,
or ‘-’ to ‘2’.
Even if the ‘1’ or ‘2’ is already displayed, the timer is
not enabled unless the ‘-’ to ‘1’ or ‘2’ transition occurs.
+60
+40
+20
9
7
5
3
1
FM
TIMER
ON
Press
Press the button sequence:
button to
Setting a ‘-’ for either timer DISABLES the respective
timer.
L
Press the button sequence:
+60
+40
+20
9
7
5
3
1
AGC
F
TIMER
ON
BCB
1
TIMER
CLOCK
If either one or both the timer ‘1’ or timer ‘2’ are
enabled, the TIMER symbol will continue to be
displayed after the receiver is turned off. Be certain to
leave the volume setting at the desired level. The
receiver will automatically turn on and off as programmed. If both timers are disabled ( ‘-’ '-' is displayed), the timer programming in either or both
timers is retained, but no TIMER action will take place
until one or both are enabled.
Clock and Timer Functions continued
2) Example for Setting Overlapping Events:
Press the button sequence:
With frequency displayed, suppose it is desired to
record a one hour program on one frequency with a
beginning time of ‘16:59’ and an
ending time of ‘18:00’;
and a second program on the same frequency with a
beginning time of ‘18:00’ and an
ending time of ‘19:01’.
Action:
Press F
and then Hold
+60
+40
+20
9
7
5
3
1
TIMER
CLOCK
AGC
F
FM
TIMER
ON
F
+60
+40
+20
9
7
5
3
1
Press
1
BCB
,
9
LAMP
17
,
AGC
0
DEL
,
1
BCB
FM
TIMER
OFF
for normal frequency display.
TIMER
CLOCK
3) Example for Setting Events on Two Different
Memory Channels:
eg.) PROGRAMMING MEM 08 in Timer ‘1’;
MEM 29 in Timer ‘2’:
With frequency displayed,
followed within two seconds by button
Press
sequence:
,
SCAN
MEM
L
8
0
DEL
Press the button sequence:
1
BCB
,
6
BW
,
5
SSB
,
9
LAMP
AGC
Press F then
followed within 2 seconds by
depression(s) of the
button until the ‘1’ is
displayed with ‘MEM 08’ indicated.
TIMER
CLOCK
1
BCB
+60
+40
+20
9
7
5
3
1
Press
Press
AGC
F
FM
TIMER
ON
F
+60
+40
+20
9
7
5
3
1
L
TIMER
CLEAR
BEEP
(enters no OFF Time for timer ‘1’)
AGC
F
After 3 seconds, the display reverts to the frequency
readout.
FM
TIMER
OFF
With frequency displayed,
Press
followed within two seconds by button
sequence:
L
SCAN
MEM
2
AIR
TIMER
CLOCK
+60
+40
+20
9
7
5
3
1
+60
+40
+20
9
7
5
3
1
TIMER
CLOCK
2
TIMER
ON
AIR
L
F
1
BCB
,
AGC
8
AGC
,
0
DEL
TIMER
ON
0
DEL
F
TIMER
MEM
AGC
FM
SW
After 3 seconds, the display reverts to the frequency
readout.
F
TIMER
OFF
,
+60
+40
+20
9
7
5
3
1
FM
TIMER
CLOCK
+60
+40
+20
9
7
5
3
1
9
LAMP
Press F then
followed within 2 seconds by
depression(s) of the
button until the ‘2‘ is
displayed with ‘MEM 29’ indicated.
FM
AGC
F
Press the button sequence:
Press
FM
TIMER
CLOCK
+60
+40
+20
9
7
5
3
1
Press
AGC
MEM
AGC
FM
To set an event with no memory channel to be
recalled, exit the memory mode before enabling the
event. In this case, the SW8 maintains its current
settings. Refer to 'ENABLING/DISABLING TIMER
OPERATION' to enable or disable either of the two
timers.
18
Special Use Features and Functions
The SW8 has several special features that are referred
to in the main body of this Owner’s manual but may
require additional explanation.
LOCK ALL ENTRY TO KEYPAD
The receiver keypad and tuning control may be locked
or disabled by pressing and holding the F button for
3 seconds.
Press the F button and hold for 3 seconds. Acknowledge beep will indicate that the keypad and
tuning control are locked.
Repeat the procedure to unlock the keypad and tuning
control.
AUTOMATIC BANDWIDTH SETTING WITH MODE
SELECTION DISABLE (ENABLE)
The SW8 permits automatic setting of the bandwidth
appropriate for each mode of detection. For example,
the 6.0 kHz bandwidth would be selected automatically
for AM mode operation; the 2.3 kHz bandwidth would
be selected for SSB mode. Of course, pressing the
button temporarily overrides the automatic
setting until a mode change is made. The setting,
automatic or manual bandwidth selection with mode, is
held in nonvolatile memory and is not lost during
power loss or during battery changing. To disable the
automatic bandwidth with mode,
6
BW
With POWER OFF,
Press and hold the
button while pressing the
POWER button to put the SW8 in the POWER ‘ON’
mode.
6
BW
10 kHz/9 kHz BROADCAST BAND TUNING STEP
SIZE
In the AM broadcast band, the SW8 increments the
frequency in 10 kHz steps when pressing the or
buttons.
The 10 kHz step size is practical for tuning the U.S. and
Canadian broadcast bands. The step size can be
changed to 9 kHz to permit practical tuning of European broadcast stations. The tuning step size is held in
nonvolatile memory and thus is not lost during power
failure or battery changing. To select the alternate step
size,
With POWER OFF
Press and hold the
button while pressing the
POWER button to put the SW8 in the POWER ‘ON’
mode.
1
BCB
If the step size was 10 kHz prior to performing the
above procedure, then the 9 kHz step size for the
broadcast band is now programmed. To change back
to 10 kHz, repeat the same procedure.
DELETE ALL MEMORY CHANNELS
If it is desired to delete all programmed memory
channels, perform the following procedure:
With POWER OFF,
Press and hold the
button while pressing the
POWER button to put the SW8 in the POWER ‘ON’
mode.
0
DEL
Hold the
button until a confirmation beep is
heard to indicate that ALL memory locations have been
cleared.
0
DEL
To enable the automatic bandwidth selection with
mode operation, repeat the same procedure.
Quick Reference Guide
3
Most front panel pushbuttons perform two functions.
The second function requires that the F button be
pressed first, and then the desired second function button
Select normal frequency display (VFO) (pages 6,7) - -
19
pressed within three seconds. The
symbol
indicates that the button is to be pressed within three
seconds.
Press
Press
STORE
VFO
1
BCB
or
2
AIR
or
3
SW
2
1
3
Select Band (page 6, 8) - - - - - - - - - - - - - - - - - - - - -
Press BCB (toggles between AM and FM) or AIR or SW .
3
3
With unit in 'SW', press SW
two or three digit entry
from numeric keypad for Shortwave Meter band designation.
Adjust Frequency (page 6) - - - - - - - - - - - - - - - - - - -
Select Band. Turn tuning wheel, Press /
3
keys, or Press F
numeric keypad.
Select Mode (page 6) - - - - - - - - - - - - - - - - - - - - - - -
AM
Press SYNC
for displayed 'AM'.
4 AM
Press SYNC to toggle to 'AM SYNC LSB'.
Press 5 SSB to toggle between 'USB' and 'LSB'.
Turn synchronous detector off before selecting LSB or USB
modes.
Press 1 BCB to toggle between the FM and AM broadcast bands.
Select SYNChro (page 6) - - - - - - - - - - - - - - - - - - - -
AM
With unit in 'AM' mode, press 4SYNC
for displayed 'AM SYNC
LSB'.
AM
to turn synWith unit in 'AM SYNC LSB' mode, press 4SYNC
chronous detector off.
Select Bandwidth (page 6) - - - - - - - - - - - - - - - - - - -
Press 6 BW for displayed '6.0', '4.0' or '2.3' (not active in FM
mode).
Select AGC (page 7) - - - - - - - - - - - - - - - - - - - - - - -
Press
Attenuator On or Off (page 7) - - - - - - - - - - - - - - - - -
Press 7 ATT for displayed ‘ATT’ or blank (not active in 'FM' or
'AIR' modes).
Set Time (page 15) - - - - - - - - - - - - - - - - - - - - - - - -
Press CLOCK to display either Local ('L') or alternate time.
TIMER
Press CLOCK
and hold until colon flashes. Use keypad to enter
time in 'HH:MM' format.
Press F to start clock.
Display Time (page 15) - - - - - - - - - - - - - - - - - - - - -
Press
Set Timer On/Off times (page 15-17) - - - - - - - - - - - -
(hold) until ‘TIMER ON’ shows. Use
keypad to enter On time for TIMER '1'. Press
TIMER
again.
CLOCK
Use keypad to enter Off time for TIMER '1'. Press
TIMER
again.
CLOCK
Use keypad to enter On time for TIMER '2'. Press
TIMER
again.
CLOCK
Use keypad to enter Off time for TIMER '2'. Press
TIMER
again to leave the set mode.
CLOCK
1
3
3
TIMER
and/or 2 AIR
F
BCB
CLOCK
Activate (Enabling) Timer (page 16) - - - - - - - - - - - - Lock (Unlock) Controls (page 12) - - - - - - - - - - - - - -
4
8
AGC
for displayed 'S' or 'F' (not active in FM mode).
TIMER
F
TIMER
CLOCK
3
(
3
TIMER
CLOCK
to display alternate time).
TIMER
CLOCK
Press F and hold until ‘LOCK’ is displayed. Pushbuttons and
tuning wheel are inactive.
20
Quick Reference Guide, continued
Lamp On/Off (page 7) - - - - - - - - - - - - - - - - - - - - - -
Press
9
LAMP
to turn display backlight on or off.
Disable Beep (page 7) - - - - - - - - - - - - - - - - - - - - - -
Press
CLEAR
BEEP
to enable or disable beep.
MEMORY FUNCTIONS
Store Memory Channel (page 13) - - - - - - - - - - - - - -
Select bandwidth and adjust frequency.
STORE
3
. ‘MEM’ will light and channel number
F
VFO
flashes, 3
use keypad to enter two digit memory
channel number from ‘00’ to ‘69’.
Recall Memory Channel (page 13) - - - - - - - - - - - - - -
SCAN
MEM
3
keypad or use
Skip Memory Channel (page 14) - - - - - - - - - - - - - - -
SCAN
MEM
3
desired two digit number from numeric
,
buttons.
desired two digit number from numeric
keypad.
Press SKIP .
Delete a Memory Channel (page 13) - - - - - - - - - - - -
desired two digit number from numeric
keypad.
Press and hold 0 DEL for 3 seconds.
Delete all Memory Channels (page 18) - - - - - - - - - - -
With power off, press
SCAN
MEM
3
0
DEL
while pressing the ‘VOLUME
(push)’ button. Hold DEL until confirmation beep indicates all channel memory has been deleted.
0
SCAN MODE
The SCAN feature only works with channels programmed within a block (page 14).
Scan Memory (page 14) - - - - - - - - - - - - - - - - - - - - -
REAR PANEL CONTROLS
‘MASTER POWER’ On/Off (page 9) - - - - - - - - - - - - -
desired two digit number from numeric
keypad to select the block to scan.
SCAN
3
Then F
to start scan.
MEM
SCAN
MEM
3
Set switch to ‘ON’ position for normal control from front
panel.
Set switch to ‘OFF’ position to guard against accidental
push of ‘VOLUME (push) control on front panel turning on
unit and discharging batteries (if installed).
Shortwave Antenna Select (page 9) - - - - - - - - - - - - - -
Select ‘1’, ‘2’ or ‘WHIP’ as desired. Connect appropriate
antenna(s).
FM/AIR Antenna Select (page 9) - - - - - - - - - - - - - - - -
Select either ‘EXTernal’ or ‘WHIP’ as desired. Connect
appropriate antenna.
Aircraft Band Squelch Control (page 9) - - - - - - - - - - -
Adjust control counterclockwise until the background noise
just quiets.
Air Squelch
Downloaded by
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LINE
AUDIO
OUT
EXTERNAL
SPEAKER
AIR
SQUELCH
Memory Channel Log
CHANNEL
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
STATION NAME
FREQUENCY
MODE
BW
S METER
AGC
21
SYNCHRO
22
CHANNEL
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
Memory Channel Log
STATION NAME
FREQUENCY
MODE
BW
S METER
AGC
SYNCHRO
23
24
Suggested References
1) Passport to World Band Radio
Published by:
International Broadcasting Services, Ltd.
P. O. Box 300
Penn's Park, Pennsylvania 18943
2) World Radio TV Handbook
Published by:
Billboard Publications Inc.
1515 Broadway
New York, NY 10036
3) The ARRL Antenna Book
Published by:
The American Radio Relay League
225 Main Street
Newington, CT USA 06111
Copyright © 1988 by The American Radio Relay League
Library of Congress Catalog Card Number: 55-8966
4) The ARRL Handbook
Published by:
The American Radio Relay League
225 Main Street
Newington, CT USA 06111
Copyright © 1989 by The American Radio Relay League
Library of Congress Catalog Card Number: 41-3345
Glossary of Terms
25
1) AC Input - Alternating Current power source
available at wall outlet sockets.
12) HF - High Frequency band extends from approximately 1.5 MHz to 30 MHz.
2) AM - Signals in which the information is conveyed
by amplitude changes of the signal. Amplitude Modulation is used for the AM broadcast bands.
13) LCD - Liquid-Crystal Display - Low power
consumption displays used for wristwatches and
information displays on many types of electronic
equipment.
3) AGC - Automatic Gain Control which is employed in
receivers to adjust the amount of gain in the receiver's
circuitry to prevent distortion and maintain a nearly
constant audio volume level over wide variations in
received signal strength.
4) Attenuation - Loss, as applied in the text of this
manual, added prior to the input stages of the receiver
to reduce the level of very strong signals that may
occur on certain bands, in certain locations, at certain
times or a combination of all three factors. Each 10 dB
(decibel) step reduces the power of the received signal
by a factor of ten.
14) LSB - Lower Side Band - The lower frequency
portion, excluding the carrier, of an AM signal. A
single-sideband signal, in this case the lower sideband,
contains all of the modulation information of amplitude
modulation in one half the bandwidth.
15) RF - Radio frequency
16) RTTY - Radio Teletype communications.
17) Squelch - A user controlled adjustment which
mutes the audio output below a certain signal strength.
5) CW - Continuous Wave transmission signals.
Actually, the signal is keyed on and off at precise
intervals to convey information. Morse code is the
most common CW signal.
18) Synchronous Detector - An amplitude modulation
detector which utilizes a replica of the original transmitted carrier signal to improve the reception of weak
signals.
6) DC Input - Direct Current power source such as is
available from batteries or regulated power supplies.
19) Synthesized - Capable of generating a large
number of different output frequencies, all related to a
single, highly stable reference source.
7) Dynamic Range - Ability of the receiver to faithfully
reproduce high quality audio over a wide range of
signal strength conditions - from very weak signals to
very strong signals.
8) Frequency - Rate of reoccurrence in hertz or
cycles/second of electromagnetic wave or carrier.
9) FM - Signals in which the information is conveyed
by frequency changes of the signal. Frequency Modulation is used for the FM broadcast bands.
10) Electronically Switched Filter - A multi bandwidth
filter with high adjacent channel attenuation switched
electronically.
11) GMT - Greenwich Mean Time.
20) Up Conversion - A frequency conversion technique that translates an incoming RF signal to a higher
frequency.
21) USB - Upper Side Band - The higher frequency
portion, excluding the carrier of an AM signal. A singlesideband signal, in this case the upper sideband,
contains all of the modulation information of amplitude
modulation in one half the bandwidth. .
22) UTC - Universal Time Coordinated.
23) VFO - Variable Frequency Oscillator
24) VHF - Very High Frequency band extends from
approximately 30MHz to 300 MHz.
26
Troubleshooting
PROBLEM
PROBABLE CAUSE
SOLUTION
Front panel clock display is showing
but radio will not turn on
A) Rear panel 'MASTER POWER'
switch
A) Check 'MASTER POWER' switch
on rear panel and set to 'ON' position
No front panel display or lights
A) Power connection
B) Defective AC adaptor unit
C) Batteries are discharged or not
installed for portable operation, no
AC power
A) Check power supply cables
B) Check AC ADAPTOR
C) Check/install batteries for portable
operation
No signals heard when antenna is
connected or sensitivity is low
A) Incorrect antenna input selected
B) RF ATT enabled
A) Select correct antenna input
B) Turn off RF ATT
S meter indication but no sound heard
A) Improper mode selected
B) External speaker connected but
defective
A) Check mode selection
B) Check external speaker
No front panel operation such as
tuning, frequency entry etc.
A) Lock enabled
A) Press 'F' and hold for 3 seconds to
unlock front panel
Timer does not operate
A) Clock(s) not set
B) Timer not properly set
A) Set clock(s)
B) Set clock(s) program timer ON/
OFF times
C) Check that last displayed clock is
the desired one for timer event
C) Alternate clock selected
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Warranty
SERVICE INFORMATION
You may contact R. L. DRAKE Service Department for
additional information or assistance by calling
(513) 746-6990, Monday through Friday, 8:00 A.M. 5:00 P.M. EST, except on holidays.
You may also contact the R. L. DRAKE Service Department by E-mail at the following address:
bill_frost@rldrake.com
27
Should you want to return your unit for service,
package the receiver carefully using the original carton
or other suitable container.
Write your return address clearly on the shipping
carton and on an enclosed cover letter describing the
service required, symptoms or problems. Also include
your daytime telephone number and a copy of your
proof of purchase.
or by Telefax:
+1 (513) 743-4576.
The receiver will be serviced under the terms of the R.
L. Drake Company Limited Warranty and returned to
you.
ONE YEAR LIMITED WARRANTY
R. L. DRAKE COMPANY warrants to the original
purchaser this product shall be free from defects in
material or workmanship for one year from the date of
original purchase.
(1) Improper maintenance or repair, including the
installation of parts or accessories that do not conform
to the quality and specification of the original parts.
During the warranty period the R. L. DRAKE COMPANY or an authorized Drake service facility will
provide, free of charge, both parts and labor necessary
to correct defects in material and workmanship. At its
option, R. L. Drake Company may replace a defective
unit.
(3) Accidental or intentional damage.
To obtain such warranty service, the original purchaser
must:
The foregoing constitutes R. L. DRAKE COMPANY’S
entire obligation with respect to this product, and the
original purchaser shall have no other remedy and no
claim for incidental or consequential damages, losses or
expenses. Some states do not allow limitations on how
long an implied warranty lasts or do not allow the
exclusions or limitation of incidental or consequential
damages, so the above limitation and exclusion may not
apply to you.
(1) Complete and send in the Warranty Registration
Card within ten (10) days of purchase.
(2) Notify the R. L. DRAKE COMPANY or the nearest
authorized service facility, as soon as possible after
discovery of a possible defect, of:
(a) the model and serial number.
(b) the identity of the seller and the approximate date
of purchase.
(c) a detailed description of the problem, including
details on the electrical connection to associated
equipment and the list of such equipment.
(3) Deliver the product to the R. L. DRAKE COMPANY or the nearest authorized service facility, or ship
the same in its original container or equivalent, fully
insured and shipping charges prepaid.
Correct maintenance, repair, and use are important to
obtain proper performance from this product. Therefore carefully read the Instruction Manual. This
warranty does not apply to any defect that R. L.
DRAKE COMPANY determines is due to:
(2) Misuse, abuse, neglect or improper installation.
All implied warranties, if any, including warranties of
merchantability and fitness for a particular purpose,
terminate one (1) year from the date of the original
purchase.
This warranty gives you specific legal rights and you
may also have other rights which vary from state to
state.
This warranty shall be construed under the laws of
Ohio.
®
R. L. Drake Company
230 Industrial Drive
Franklin, Ohio 45005 U.S.A
CUSTOMER SERVICE AND PARTS TELEPHONE: +1 (513) 746-6990
TELEFAX: +1 (513) 743-4576
WORLD WIDE WEB SITE: http://www.rldrake.com
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