Cobra | 29NWST | Specifications | Cobra 29NWST Specifications

Cobra 29NWST Specifications
How to Use Your
Cobra 29 NW ST
Contents
Features..................................................................................................1
Controls & Indicators.......................................................................A1
Installation
Location .............................................................................................2
Mounting and Connection .........................................................2
Antennas
CB Antenna.......................................................................................6
Marine Installation .........................................................................6
Ignition Noise Interference ..........................................................7
Operating Your 29 NW ST
Turning On Your CB........................................................................8
Setting Channel Selector .............................................................9
Calibrate For SWR (Standing Wave Ratio)..............................10
To Receive..........................................................................................12
Selecting a Channel.......................................................................13
S-Meter ...............................................................................................13
SoundTracker™ System ................................................................14
Activating SoundTracker™ ..........................................................15
NB-ANL/ANL/Off (Noise Blanker/Automatic.........................16
Noise Limiter Switch)
Tone Hi/Nor.......................................................................................17
RF Gain Control................................................................................17
Dimmer Switch ................................................................................18
Setting Squelch ...............................................................................18
To Transmit........................................................................................20
Setting Dynamike...........................................................................20
Transmit..............................................................................................21
RF Meter .............................................................................................22
External Speaker .............................................................................23
PA (Public Address) ........................................................................24
Home And Office Set-Up .............................................................26
Temporary Mobile Set-Up ...........................................................27
How Your CB Can Serve You..........................................................28
A Few Rules You Should Know ..................................................28
Channel 9 Emergency Messages..............................................28
CB 10 Codes......................................................................................30
Frequency Ranges.............................................................................32
29 NW ST Specifications.................................................................33
Warranty Information .....................................................................34
Optional Accessories.................................................................35-36
Features of This Product
• 40 CB Radio Channels
• SoundTracker ™ System
• Heavy-Duty Dynamic
Microphone
• Full 4 Watts AM RF Power Output
• SWR Calibration Meter
• Instant Channel 19 and 9
• Front Panel 4-Pin Microphone
Connector
• Delta -Tune
• Switchable Automatic Noise
Limiter & Noise Blanker
• Adjustable Dynamike Boost
• Tactile Controls
• Illuminated Front Panel
• Dim Control
• RF Gain
• 9 ft. Mic Cord
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK DO NOT REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL
1
!
Installation
Installation
Location
Location
Plan location of transceiver and microphone
bracket before starting the installation.
DATE OF
MFG :JUNE 98
Select a location that is convenient for operation,
yet does not interfere with the driver or passenger.
FCC ID:BBO3K229LTD
COBRA
MADE IN CHINA
ANT
PA.SP. EXT.SP.
+ POWER –
SERIAL NO.:806135776
PRECISION ENGINEERED PRODUCT OF
COBRA ELECTRONICS CORP. CHICAGO, ILL.60707
The transceiver is usually mounted to the underside of the dash with the microphone bracket
beside it.
Mounting and
Connection
Mounting and Connection
1
Note
The transceiver is held in the
universal mounting bracket by
two thumbscrews which allow
for adjustment at a convenient
angle.
Hold the radio with the mounting bracket in
the exact desired location. If there is no interference, remove the bracket and use it as a
template to mark the location for the mounting screws.
3
Connect the antenna cable plug to the receptacle marked “ANT” on the back of the unit.
The bracket includes two selftapping screws and star washers. The mounting must be
mechanically strong, conveniently located.
2
Drill the holes and secure the bracket.
continued
2
3
Installation
Installation
FCC ID:BBO3K229LTD
COBRA
MADE IN CHINA
ANT
PA.SP. EXT.SP.
+ POWER –
CT OF
CAGO, ILL.60707
Note
Connecting to an accessory fuse
prevents the unit from being left
on accidentally, and also permits operating the unit without
running the engine.
6
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
7
Mount the microphone
bracket on either side of
the unit (driver’s left)
using two screws supplied. Bracket should be
placed under the dash
so microphone is readily
accessible.
Note
In positive ground vehicles the
red wire goes to the chassis and
the black wire is connected to
the ignition switch.
Note
Before installing the CB radio,
visually check the vehicle’s
battery connection to determine which terminal, positive
or negative, is grounded (positive is the larger of the two)
to the engine block (or chassis). A negatively grounded
vehicle has its negative lead
grounded to the chassis.
4
In a negative grounded vehicle, connect the
red lead of the DC power cord to an accessory
12 volt fuse.
5
Connect the black lead to the negative side of
the vehicle. This is usually the chassis. Any convenient location with a good electrical contact
(remove paint) may be used.
29 NW ST
SWR
2
3
SIG 1
3
5 79
VOL
OFF
8
4
CAL
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
RF
RF
C
+30dB
SQL
DYNAMIKE
MIN
MAX
P
RFGA
MIN
Attach the 4-pin microphone cable to receptacle on front of unit and Install unit in bracket
securely.
5
Antennas
Ignition Noise Interference
CB Antenna
CB Antenna
Since the maximum allowable power output of
the transmitter is limited by the IC/FCC, the
Note
antenna is critical in affecting transmission disFor optimum performance in
tance. Only a properly matched antenna system
passenger cars the ideal antenwill allow maximum power output. Cobra loaded
na location is on the center of
type antenna models are highly recommended
the roof. Second choice is on the
for most installations. Consult your Cobra dealer
center of the trunk.
for further details.
Note
Because many newer trucks
feature fiberglass door skins, the
outside mirror must be grounded to the chassis via ground
strap, if the antenna is mounted
on the mirror bracket.
DATE OF
MFG :JUNE 98
FCC ID:BBO3K229LTD
COBRA
MADE IN CHINA
ANT
PA.SP. EXT.SP.
+ POWER –
SERIAL NO.:806135776
PRECISION ENGINEERED PRODUCT OF
COBRA ELECTRONICS CORP. CHICAGO, ILL.60707
Note
3-way Combination Antennas
are also available which allow
operation of all three bands
(AM-FM & CB), using a single
antenna. However, this type of
antenna usually results in less
than normal transmit and
receive range when compared
to a standard-type “Single
Band” CB antenna.
1
A standard antenna connector is provided
on the transceiver for easy connection.
Use of a mobile receiver at low signal levels is
normally limited by the presence of electrical
noise. The primary source of noise in automobiles
is from the alternator and ignition system.
Typically, when signal level is adequate, the background noise does not present a serious problem.
Also, when extremely low level signals are being
received, the transceiver may be operated with
the vehicle’s engine turned off. The unit requires
very little current and therefore will not significantly discharge the vehicle’s battery.
Even though the Cobra 29 NW ST has an automatic noise limiter, in some installations ignition
interference may be high enough to make good
communications impossible. Many possibilities
exist and variations between vehicles require
different solutions. Consult your COBRA dealer or
a 2-way radio technician for help in locating the
source of a severe noise.
Marine Installation
The transceiver will not operate at maximum efficiency in a boat without a ground plate, (unless it
has a steel hull). Before attempting installation ,
consult your dealer for information regarding an
adequate grounding system and prevention of
electrolysis between fittings in the hull and water.
6
7
Operation
Operation
Turning On
Turning On
Setting Channel Selector
Make sure the power cord, antenna and microphone are connected to their proper connectors
before starting.
29 NW ST
TONE
NB/
ANL
ANL
2
3
SIG 1
3
5 79
VOL
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
RF
HI
PA
NOR
CH19
RFGAIN
RX/TX
NOR
DIMMER
SWR CAL
CB
+30dB
SQL
PA
RFGAIN
DYNAMIKE
AX
1
OFF
1
CB
CH9
OFF
29 NW ST
SWR
Setting Channel
Selector
MIN
MAX
MIN
MAX
The CB/PA button should be in the
CB position.
MIN
MAX MIN
MAX
Select
one of forty channels and adjust
volume. The selected channel is indicated by
the LED readout directly above the channel
selector knob
29 NW ST
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
9
VOL
TONE
CB
HI
PA
NOR
CH
CH
+30dB
SQL
DYNAMIKE
RFGAIN
NO
DIMMER
MIN
2
8
Rotate the On/Off Volume knob
a normal listening level.
M
clockwise to
9
Operation
Calibrate For
SWR (Standing
Wave Ratio)
Operation
Calibrate for SWR (Standing Wave Ratio)
SWR calibration is done to properly adjust the
length of the antenna and to monitor the quality
of the coaxial cable and all RF connections.
This calibration is critical in order to achieve optimum performance.
PUSH &
HOLD
Note
Calibration must be made in an
open area (never in a garage).
Vehicle doors must be closed. No
one should be standing near the
antenna. (See your antenna
directions for more complete
information).
29 NW ST
TONE
NB/
ANL
ANL
CB
HI
PA
NOR
CH9
OFF
RFGAIN
E
CH19
RX/TX
NOR
DIMMER
SWR CAL
Push and hold mic button.
3
AX
MIN
MAX
MIN
Note
The reading will be slightly higher on Channels 1 and 40 compared to Channel 20.
MAX
29 NW ST
1
Select
TONE
NB/
ANL
ANL
channel 20.
HI
PA
NOR
CH19
CH9
OFF
E
CB
RFGAIN
RX/TX
NOR
DIMMER
SWR CAL
29 NW ST
SWR
2
3
SIG 1
3
5 79
VOL
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
RF
CB
MAX
+30dB
SQL
DYNAMIKE
2
Switch to the
MIN
MAX
CAL position.
MAX
MIN
MAX
RFGAIN
4
OFF
MIN
PA
MIN
MAX
While holding mic
SWR 2
button adjust the
RF
SWR CAL knob so the
SIG 1
3
meter needle swings
to the CAL ▼ mark on
the meter (located on the right).
3
CAL
5 79
+30dB
continued
10
11
Operation
Operation
Selecting A Channel
Selecting A
Channel
29 NW ST
SWR
2
3
SIG 1
3
5 79
VOL
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
RF
CB
+30dB
SQL
PA
TONE
CH19
NOR
A
When switched to SWR position the meter needle should
ideally be as far to the left as
possible. Anything over 3 is
not acceptable. A slight
antenna height adjustment
(higher or lower) may be
required. Repeat relcalibration
steps.
IN
OFF
5
6
MIN
MAX
MIN
Note
RX/TX
CH9
Note
To Receive
HI
B
RFGAIN
DYNAMIKE
Switch to 9 (Emergency) or 19
(Information) for instant access
to these channels.
NOR
DIMMER
SWR CAL
MAX
While still holding down the mic button, set
the S/RF SWR CAL switch to the SWR position,
to read the SWR reading.
Repeat the same steps two through five on
Channel 1 and 40. This will check SWR for all
channels.
MAX
1
MIN
MAX
Switch to
NOR to select desired channel.
S-Meter
S-Meter
Swings proportionately to strength of incoming
signal when receiving.
To Receive
29 N
29 NW ST
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
9
VOL
TONE
CB
HI
PA
NOR
CH19
SWR
CH9
DYNAMIKE
RFGAIN
3
NOR
SIG 1
3
5 79
MIN
12
Rotate the
On/Off Volume knob clockwise
the green RT/TX LED will be illuminated.
OFF
SQL
DYNAMIKE
MA
1
1
CAL
+30dB
DIMMER
VOL
SWR
NB/
ANL
ANL
S/RF
CAL
RF
+30dB
SQL
2
The S/RF-SWR-CAL switch must be in the
S/RF position to read the meter.
13
Operation
Operation
The SoundTracker TM System
Note
SoundTracker™ gives you
clearer, cleaner reception to
improve CB communications
while on the air.
While previous systems only “blanket out” or limit
noise in higher sound frequencies, the revolutionary new SoundTrackerTM System actually reduces
noise while leaving the signal intact in the reception mode. In the transmission mode, it actually
strengthens the signal, providing you with a
significant reduction in noise on reception
and transmission.
Sound clarity is measured by the ratio
of the signal level to the noise level.
The higher the signal-to-noise ratio,
the better the sound.
How SoundTracker TM Works
Activating SoundTracker™
Activating
SoundTracker™
TONE
HI
RX/TX
NOR
DIMMER
MIN
1
MAX
Push and release the
ST button. Red LED
is illuminated when SoundTracker™ is
turned on.
On Reception - “Cuts noise coming in”
With a normal CB, distant signals fall below
the squelch level and are unintelligible. With a
SoundTrackerTM CB, the noise level is cut up to
90%, which increases the signal-to-noise ratio
and dramatically improves signal clarity. This also
allows you to significantly reduce the squelch
level, which greatly expands your listening range.
On Transmission - “Strengthens signals going out”
A SoundTrackerTM CB strengthens the transmit
signal by more effectively using the available RF
power output of the CB. The result is improved
transmission signal clarity and an expanded
transmission range.
14
15
Operation
NB-ANL/ANL/
OFF (Noise
Blanker/
Automatic
Noise Limiter)
Switch
Operation
NB-ANL/ANL/OFF (Noise
Blanker/Automatic Noise Limiter) Switch
Tone Hi/Nor
Tone Hi/Nor
This switch is used to shape the Audio Response
to the operators preference.
29 NW ST
SWR
2
3
RF
SIG 1
3
5 79
VOL
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
CB
TONE
B
HI
A
NOR
+30dB
SQL
DYNAMIKE
MIN
MAX
RFGAIN
MIN
MAX
1
NOR
DIMMER
SWR CAL
MAX
Note
The RF noise blanker is very
effective in reducing repetitive
noises such as ignition interference.
RX/TX
CH9
PA
IN
OFF
CH19
When switched to ANL the Automatic Noise
Limiter is activated. This helps reduce noise
created by the vehicle’s electronics.
1
MIN
MAX
When set in HI the treble is increased.
RF Gain Control
When switched to NB/ANL position the RF
Noise Blanker is also activated, providing
increased noise filtration.
RF Gain Control
The RF Gain is used to optimize reception in
strong or weak signal areas.
When switched to OFF position all noise
filtration will be turned off.
29 NW ST
SWR
SIG 1
2
3
3
5 79
VOL
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
TONE
CB
HI
PA
NOR
CH19
CH9
+30dB
SQL
DYNAMIKE
NOR
DIMMER
RFGAIN
Note
The RF Gain is used to optimize
reception in weak signal areas.
OFF
1
16
MIN
MAX
MIN
MAX
MIN
MA
Rotate the
RF Gain knob counterclockwise
to reduce gain in strong signal areas. In weak
signal areas turn clockwise to increase gain.
17
Operation
Operation
Dimmer Switch
Dimmer Switch
Gate open
29 NW ST
TONE
HI
STRONG SIGNALS
NOR
DIMMER
MEDIUM SIGNALS
29 NW ST
TONE
Note
HI
CH9
The Dimmer controls the
brightness of the front panel,
signal strength meter and
channel display.
R
MIN
WEAK SIGNALS
MA
NOR
RFGAIN
DIMMER
MIN
2
Full
counterclockwise rotation opens the
“gate” allowing all signals in.
NOISE
G AT E
OPEN
DYNAMIKE
MAX
29 NW ST
TONE
1
Rotate the
Dimmer knob clockwise for maximum brightness; counter-clockwise for minimum.
HI
NOR
DIMMER
Setting Squelch
Gate set to Desired
Squelch Setting (DSS)
Setting Squelch
Squelch is the “control gate” for incoming signals.
MIN
Gate closed
MA
STRONG SIGNALS
29 NW ST
3
HI
MEDIUM SIGNALS
WEAK SIGNALS
NOISE
G AT E C L O S E D
NOR
DIMMER
MIN
1
18
To achieve the Desired Squelch Setting (DSS),
turn the Squelch control
counterclockwise
until you hear noise. Now turn the control
clockwise just until the noise stops. This is the
DSS setting.
MEDIUM SIGNALS
WEAK SIGNALS
M
NOISE
Full
clockwise rotation closes the gate
allowing only very strong signals to enter.
19
G AT E
TONE
STRONG SIGNALS
Operation
To Transmit
Operation
Transmit
To Transmit
Transmit
29 NW ST
Caution!
Be sure the antenna is properly
connected to the radio before
transmitting. Prolonged transmitting without an antenna, or
a poorly matched antenna,
could cause damage to the
transmitter.
CB
HI
PA
NOR
RFGAIN
AX
MIN
PUSH &
HOLD
CH19
RX/TX
CH9
OFF
1
Setting
Dynamike
TONE
NB/
ANL
ANL
NOR
DIMMER
MAX MIN
SWR CAL
MAX
Select desired
channel.
Setting Dynamike
1
This controls the microphone sensitivity
(outgoing audio level).
Push and hold mic button to transmit.
Transmitter is now activated. When transmitting, hold the microphone two inches from
your mouth and speak in a clear, normal voice.
Release to receive.
29 NW ST
SWR
2
3
RF
SIG 1
3
5 79
VOL
OFF
1
20
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
TONE
CB
HI
PA
NOR
CH19
CH9
+30dB
SQL
DYNAMIKE
MIN
MAX
RFGAIN
MIN
NOR
DIMMER
MAX
MIN
MA
Initially, set fully
clockwise so that maximum voice volume is available. Dynamike
may have to be reduced in some conditions.
21
Operation
RF Meter
Operation
RF Meter
External Speaker
This meter swings proportionately to the RF
output (outgoing signal) while transmitting.
The external speaker jack is used for remote
receiver monitoring.
External Speaker
Note
29 N
SWR
2
3
RF
SIG 1
3
5 79
VOL
1
22
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
ANT
D
A
+30dB
SQL
PA.SP. EXT.SP.
+ POWER –
DYNAMIKE
The S/RF-SWR-CAL switch must be in the
S/RF position.
1
Connect an external speaker to the external
speaker jack on the rear panel.
The external speaker should
have 8-ohm impedance and be
rated to handle at least 4.0
watts. When the external speaker is plugged in, the internal
speaker is automatically disconnected.
Note
Cobra external speakers are
rated at 15 watts.
23
Operation
PA (Public
Address)
Operation
PA (Public Address)
PUSH &
HOLD
Note
Speaker should have 8-ohm
impedance and be rated to
handle at least 4.0 watts.
ANT
TD
A
PA.SP. EXT.SP.
+ POWER –
A
7
Note
The speaker should be directed
away from the microphone to
prevent acoustic feedback.
1
Note
Connect an external PA speaker to the PA jack
on the rear panel.
Activity on the CB channel
will be heard through the PA
speaker. Adjust Volume Control
for normal listening level.
3
Push and hold microphone button and speak
in a normal voice. Your voice will now transmit
on the PA speaker.
29 NW ST
SWR
2
3
RF
SIG 1
3
5 79
VOL
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
CB
29 NW ST
+30dB
SQL
DYNAMIKE
N
PA
SWR
2
3
RF
RFGAIN
SIG 1
3
5 79
VOL
OFF
2
MIN
MAX
MIN
OFF
HI
PA
NOR
CH19
CH9
+30dB
SQL
DYNAMIKE
RFGAIN
NOR
DIMMER
MIN
MAX
MIN
MAX
MIN
M
CB/PA switch to PA position.
4
24
CAL
TONE
CB
MAX
OFF
Set
SWR
NB/
ANL
ANL
S/RF
CAL
Adjust PA speaker volume with the
Dynamike control.
25
Home And Office Set-Up
Base Station
Operation
(From 120V AC
House Current)
Temporary Mobile Set-Up
Base Station Operation
(From 120V AC House Current)
To operate your transceiver from home or office
you will need a 13.8 volt DC Power Pack rated at a
minimum of 2 amps, and a properly installed base
station antenna.
+
Warning!
Do not attempt to operate this
transceiver by connecting it
directly to 120 vac.
FCC ID:BBO3K229LTD
COBRA
ANT
PA.SP. EXT.SP.
+ POWER –
MADE IN CHINA
ODUCT OF
P. CHICAGO, ILL.60707
2
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
3
Connect properly installed and matched base
station antenna.
—
Temporary Mobile Operation
For temporary mobile operation you may want to
purchase an optional cigarette lighter adapter
from your COBRA dealer. This adapter and a magnetic mount antenna allow you to quickly “install”
your transceiver for temporary use.
DATE OF
MFG :JUNE 98
1
26
Simply connect the red (+) and black (-)
leads of the transceiver to the corresponding
terminals of the power pack.
FCC ID:BBO3K229LTD
COBRA
MADE IN CHINA
ANT
Temporary
Mobile Set-Up
PA.SP. EXT.SP.
+ POWER –
SERIAL NO.:806135776
PRECISION ENGINEERED PRODUCT OF
COBRA ELECTRONICS CORP. CHICAGO, ILL.60707
27
How Your CB Can Serve You
•
•
•
•
•
•
•
•
•
A Few Rules
You Should
Know
Channel 9
Emergency
Messages
Warn of traffic problems
Provide weather and road data
Provide help in event of an emergency
Provide direct contact with home or office
Assist police by reporting erratic drivers
Get “local information” to find destination
Communicate with family and friends
Suggest spots to eat and sleep
Keep you alert while traveling
How Your CB Can Serve You
The FCC gives these examples of permitted and
prohibited messages for channel 9. These are
only guidelines and not all-inclusive:
Permitted
Example Message
Yes
“Tornado sighted six miles north
of town.”
“Post number 10.
No tornado sighted.”
No
A Few Rules You Should Know
A. Conversations cannot last more than 5 minutes
with another station. A one minute break is
required to let others use the channel.
B. You cannot blast others off the air by use of
illegally amplified transmitters or illegally
high antennas.
C. You cannot use CB to promote illegal activities.
D. Profanity is not allowed.
E. You may not transmit music with a CB.
F. Selling of merchandise and/or services is
prohibited.
Yes
No
Yes
No
Yes
1. Set to channel 9 for emergencies
Be sure antenna is properly connected.
No
2. CB Distress Data
When transmitting an emergency, you should
request a “REACT BASE” and provide the CB
distress data (called CLIP):
Note
C
L
I
P
If no response on channel 9,
try channels 19 or 14.
all Sign
ocation
njuries
roblem
Identify yourself.
Be exact.
Number. Type. Trapped?
Give details and help needed.
Yes
No
“Out of gas on Rte 15 at km
marker 211.”
“Out of gas in my driveway.”
“Four car accident on 401 at
Exit 11. Send police and
ambulance.”
“Traffic moving smoothly on 401.”
“Weather Bureau has issued
thunderstorm warning.
Bring sailboat into port.”
“Attention motorists.
Weather Bureau advises snow
tomorrow will accumulate
4 to 6 cm.”
“Fire in building at 539 Main,
Calgary.”
“Halloween patrol number 3.
All quiet.”
Transmit CLIP repeatedly so any monitor can assist.
28
29
How Your CB Can Serve You
CB 10-Codes
CB 10-Codes
Citizen Bands have adopted the “10-CODES” for
standard questions and answers. These codes
provide quick and easy communication, especially
in noisy areas. Following are some of the more
common codes and meanings:
Code
10-1
10-2
10-3
10-4
10-5
10-6
10-7
10-8
10-9
10-10
10-11
10-12
10-13
10-16
10-17
10-18
10-19
10-20
10-21
10-22
10-23
10-24
10-25
10-26
10-27
10-28
30
Meaning
Receiving poorly
Receiving well
Stop transmitting
OK, message received
Relay message
Busy, stand by
Out of service, leaving
In service, subject to call
Repeat message
Transmission completed standing by
Talking too rapidly
Visitors present
Advise weather/roads
Make pick up at
Urgent business
Anything for us?
Return to base
My location is
Call by phone
Report in person to
Stand by
Completed last assignment
Can you contact
Disregard last info
Moving to channel
Identify your station
How Your CB Can Serve You
Code
10-29
10-30
10-33
10-34
10-35
10-36
10-37
10-38
10-39
10-41
10-42
10-43
10-44
10-45
10-50
10-60
10-62
10-63
10-64
10-65
10-67
10-70
10-71
10-77
10-81
10-82
10-85
10-91
10-93
10-94
10-99
10-200
Meaning
Time is up for contact
Does not conform to IC/FCC rules
Emergency traffic
Trouble at this station
Confidential information
Correct time is
Wrecker needed at
Ambulance needed
Message delivered
Turn to channel
Traffic accident at
Traffic tie up at
Have a message for
All units within range please report
Break channel
What is next message number?
Unable to copy. Use phone
Net directed to
Net clear
Awaiting your next message/assignment
All units comply
Fire at
Proceed, transmission in sequence
Negative contact
Reserve hotel room for
Reserve room for
My address is
Talk closer to mic
Check my frequency on this channel
Give me a long count
Mission completed, all units secure
Police needed at
31
Frequency Ranges
29 NW ST Specifications
The COBRA 29 NW ST transceiver represents one of
the most advanced AM two-way radios used as a
Class D station in the Citizens Radio Service. This
unit features advanced Phase Lock Loop (PLL)
circuitry providing complete coverage of all 40 CB
channels.
Channel
Channel
CB
Freq.
CB
Freq.
Channel In MHz Channel In MHz
1
2
3
4
5
26.965
26.975
26.985
27.005
27.015
21
22
23
24
25
27.215
27.225
27.255
27.235
27.245
6
7
8
9
10
27.025
27.035
27.055
27.065
27.075
26
27
28
29
30
27.265
27.275
27.285
27.295
27.305
11
12
13
14
15
27.085
27.105
27.115
27.125
27.135
31
32
33
34
35
27.315
27.325
27.335
27.345
27.355
16
17
18
19
20
27.155
27.165
27.175
27.185
27.205
36
37
38
39
40
27.365
27.375
27.385
27.395
27.405
32
GENERAL
CHANNELS . . . . . . . . . . . . . . . . . . . . . . . CB - 40 CH
FREQUENCY RANGE . . . . . . . . . . . . . . . CB - 26.965 TO 27.405 MHZ
FREQUENCY TOLERANCE . . . . . . . . . . 0.005 %
FREQUENCY CONTROL . . . . . . . . . . . . PLL (PHASE LOCK LOOP) SYNTHESIZER
OPERATING TEMPERATURE
RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . -30° C TO + 50° C
MICROPHONE . . . . . . . . . . . . . . . . . . . . PLUG-IN DYNAMIC
INPUT VOLTAGE . . . . . . . . . . . . . . . . . . 13.8VDC nom. (positive or negative ground)
CURRENT DRAIN
TRANSMIT: AM FULL MOD., 1.5A (MAXIMUM)
RECEIVE: SQUELCHED, 0.3A;
FULL AUDIO OUTPUT, 1.2A (NOMINAL)
SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5/8” D X 7-9/32”W X 2-13/63” H
WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . .4 LBS.
ANTENNA CONNECTOR . . . . . . . . . . . .UHF; SO-239
METER . . . . . . . . . . . . . . . . . . . . . . . . . . .ILLUMINATED; INDICATES RELATIVE
POWER OUTPUT, RECEIVED
SIGNAL STRENGTH AND VSWR
TRANSMITTER
POWER OUTPUT . . . . . . . . . . . . . . . . . .4 WATTS
MODULATION . . . . . . . . . . . . . . . . . . . .AM (AMPLITUDE MODULATION)
FREQUENCY RESPONSE . . . . . . . . . . . .300 TO 3000 HZ
OUTPUT IMPEDANCE . . . . . . . . . . . . . .50 OHMS, UNBALANCED
RECEIVER
SENSITIVITY . . . . . . . . . . . . . . . . . . . . . . .LESS THAN 1 µV FOR 10dB (S+N) /N
SELECTIVITY . . . . . . . . . . . . . . . . . . . . . .6 dB @ 7 KHZ, 60 dB @ 10KHZ
IMAGE REJECTION . . . . . . . . . . . . . . . . .80 dB, TYPICAL
ADJACENT-CHANNEL REJECTION . . .60 dB, TYPICAL
IF FREQUENCIES . . . . . . . . . . . . . . . . . .DOUBLE CONVERSION: 1ST: 10.695 MHZ
2ND: 455 KHZ
AUTOMATIC GAIN CONTROL (AGC) .LESS THAN 10 dB CHANGE IN AUDIO
OUTPUT FOR INPUTS FROM 10 TO 50,000
MICROVOLTS
RF GAIN RANGE . . . . . . . . . . . . . . . . . . .40 dB
NOISE BLANKER . . . . . . . . . . . . . . . . . . .RF TYPE
SQUELCH . . . . . . . . . . . . . . . . . . . . . . . . .ADJUSTABLE;THRESHOLD LESS THAN 1µV
AUDIO OUTPUT POWER . . . . . . . . . . .4 WATTS
FREQUENCY RESPONSE . . . . . . . . . . . .300 TO 3000 HZ
DISTORTION . . . . . . . . . . . . . . . . . . . . . .LESS THAN 7% @3 WATTS @ 1000 HZ
BUILT-IN SPEAKER . . . . . . . . . . . . . . . . .8 OHMS, 5W
EXTERNAL SPEAKER (NOT SUPPLIED) 8 OHMS; DISABLES INTERNAL SPEAKER
WHEN CONNECTED
PA SYSTEM
POWER OUTPUT . . . . . . . . . . . . . . . . . .4 WATTS INTO EXTERNAL SPEAKER
EXTERNAL SPEAKER FOR PA . . . . . . . .8 OHMS, 4 W MIN.
(NOT SUPPLIED) . . . . . . . . . . . . . . . . . .THE PA SPEAKER ALSO MONITORS THE
RECEIVER; SEPARATE JACK PROVIDED
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
33
Limited Two Year Warranty
Optional Accessories
COBRA ELECTRONICS CORPORATION warrants that its
COBRA CB Radios, and the component parts thereof, will
be free of defects in workmanship and materials for period
of two (2) years from the date of first consumer purchase.
COBRA will, without charge, repair or replace, at its option,
defective CB radios, products or component parts upon
delivery to a COBRA factory Service Department, accompanied by proof of the date of first consumer purchase,
such as a duplicated copy of a sales receipt.
You must pay any initial shipping charges required to ship
the product for warranty service, but the return charges
will be at Cobra's expense, if the product is repaired or
replaced under warranty.
21” Base Loaded Magnet
Mount Antenna
HG A1000
$39.95
38” Base Loaded Magnet
Mount Antenna
HG A1500
$59.95
Applicable taxes apply.
Shipping and handling: $6.00
34
35
Optional Accessories
4 Pin Premium NoiseCancelling Microphone
Wood Grain
HG M84W
$89.95
Dynamic External Speaker
HG S100
$34.95
Noise Canceling External
Speaker
HG S300
$39.95
4 Pin Replacement Dynamic
Microphone
HG M73
$24.95
Power Microphone
HG M75
$34.95
4 Pin Noise Canceling
Microphone
HG M77
$39.95
You Can Find These Fine Accessories At Your Local
Cobra® CB Dealer
If you wish, you can order directly from Cobra®. Send order, your
name, address and method of payment.
Order by phone:
Call 514.683.1779 x 2264
Order by fax:
514.683.5307
Order by email:
Send to cobraextras@avs.ca
36
29 NW ST
Operating Instructions
for your Cobra 29 NW ST
The CB Story
The Citizens Band lies between the shortwave
broadcast and 10-meter Amateur radio bands,
and was established by law in 1949. The Class D
two-way communications service was opened in
1959. (CB also includes a Class A citizens band
and Class C remote control frequencies.)
2
IC/FCC Regulations
1
CB Radio
IC/FCC regulations permit only “transmissions”
(one party to another) rather than “broadcasts”
(to a wide audience). Thus, advertising is not
allowed on CB Channels because that is “broadcasting.”
29 NW ST
SWR
2
3
3
5 79
VOL
OFF
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
RF
RF
SIG 1
TONE
CB
HI
PA
NOR
CH19
CH9
RX/TX
+30dB
SQL
DYNAMIKE
MIN
MAX
RFGAIN
MIN
NOR
DIMMER
MAX
MIN
SWR CAL
MAX
3
cb tranceiver
29 NW ST
TONE
HI
NOR
RF GAIN
NOR
4
DIMMER
29 NW ST
Operating Instructions
for your Cobra 29 NW ST
What’s Included with Your 29 NW ST
CB Radio
5
1.
2.
3.
4.
5.
29 NW ST
TONE
HI
NOR
RF GAIN
NOR
DIMMER
“Ingenious Products for Easier Communication.”
A1
CB transceiver
Microphone
Transceiver bracket
Microphone bracket
Operating Manual
6. DC power cord
1.
Controls and Indicators
Our Thanks to You
Thank you for purchasing the Cobra 29 NW ST CB
Radio. Properly used, this Cobra product will give
you many years of reliable service.
1. 4-Pin Microphone
Connector
19
2. Power On/Off, Volume
3. Squelch
SoundTracker TM
4. Dynamike
“Cuts noise coming in...strengthens signals
going out.”
5. RF Gain
This Patent pending technology dramatically
improves transmission and reception of CB
signals.
6. Dimmer
7. SWR CAL
8. Channel Selector
The revolutionary SoundTrackerTM System reconfigures the transmission signal which allows it to
be transferred more efficiently through cluttered
airwaves.
9. LED Channel Display
10. Sound Tracker™ LED
11. RX (Receive)/ TX (Transmit)
LED Indicator
12. Sound Tracker™ On/Off
13. Channel 19/Channel 9/
Normal Switch
14. Tone Hi/Nor
17 16 15 14 13 11
29 NW ST
18
SWR
2
3
RF
RF
SIG 1
3
5 79
SWR
NB/
ANL
ANL
CAL
OFF
S/RF
CAL
TONE
CB
HI
CH9
VOL
SQL
OFF
DYNAMIKE
MIN
MAX
NOR
RFGAIN
MIN
12
NOR
DIMMER
MAX
9
RX/TX
+30dB
PA
10
CH19
MIN
SWR CAL
MAX
15. CB/PA Switch
1
16. NB/ANL ANL Off Switch
17. S/RF SWR CAL Switch
2
4
5
6
At the same time, it significantly reduces the
amount of static on all incoming CB signals.
7
8
The end result is a cleaner, clearer sounding
reception of signals and a more powerful
transmission which dramatically improves
CB communications.
3
18. Signal Strength Meter
20
19. Microphone
Back Side
DATE OF
MFG :JUNE 98
20. Public Address Speaker
Jack
FCC ID:BBO3K229LTD
COBRA
ANT
21
PA.SP. EXT.SP.
+ POWER –
MADE IN CHINA
SERIAL NO.:806135776
PRECISION ENGINEERED PRODUCT OF
COBRA ELECTRONICS CORP. CHICAGO, ILL.60707
21. External Speaker Jack
22
22. Antenna Connector
23
23. Power Jack
A1
A2
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