Cobra 29WXNWST Operating instructions

How to Use Your
Cobra 29 WX NW ST
Contents
Features..................................................................................................1
The CB Story.........................................................................................A1
FCC Regulations
FCCWarnings
Included Accessories
Controls & Indicators.......................................................................A2
Our Thanks toYou.............................................................................A3
SoundTracker™
Customer Support
Installation
Location.............................................................................................2
Mounting and Connection.........................................................2
Antennas
CB Antenna.......................................................................................6
Marine Installation.........................................................................6
Ignition Noise Interference..........................................................7
Operating Your 29 WX 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)
CB/WX Switch...................................................................................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
Weather Channels..........................................................................26
Home And Office Set-Up.............................................................28
Temporary Mobile Set-Up...........................................................29
HowYour CB Can Serve You..........................................................30
A Few Rules You Should Know..................................................30
Channel 9 Emergency Messages..............................................30
Weather Channel Messages.......................................................31
CB 10 Codes......................................................................................32
Frequency Ranges.............................................................................34
29 WX NW ST Specifications ........................................................35
Warranty Information.....................................................................36
Optional Accessories.................................................................37-38
Order Form ...........................................................................................39
IfYou Think You Need Service...................................Back Cover
Featuresof ThisProduct
• 7WeatherChannels
• EmergencyWeatherAlert
• 40CBRadioChannels
• SoundTracker™System
• Heavy-DutyDynamic
Microphone
• Full4WattsAMRFPowerOutput
• SWRCalibrationMeter
• InstantChannel19and9
• FrontPanel4-PinMicrophone
Connector
• SwitchableAutomaticNoise
Limiter&NoiseBlanker
• AdjustableDynamikeBoost
• TactileControls
• 9FtMicCord
• IlluminatedFrontPanel
• DimmerControl
• RFGain
1
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
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN !!
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 1

InstallationInstallation
Location
32
Mounting and
Connection
Mounting and Connection
Hold the radio with the mounting bracket in
the exact desired location.If there is no inter-
ference,remove the bracket and use it as a
template to mark the location for the mount-
ing screws.
Location
Plan location of transceiver and microphone
bracket before starting the installation.
Select a location that is convenient for operation,
yet does not interfere withthe driveror passenger.
The transceiver is usually mounted to the under-
side of the dash with the microphone bracket
beside it.
Note
Thetransceiverisheldin the
universalmountingbracketby
twothumbscrewswhich allow
foradjustmentataconvenient
angle.
Thebracketincludestwoself-
tappingscrewsand starwash-
ers.Themountingmust be
mechanicallystrong,conve-
nientlylocated.
continued
Drill the holes and secure the bracket.
2
1
Connect the antenna cable plug to the recep-
tacle marked“ANT” on the back of the unit.
3
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 2

InstallationInstallation
54
Note
Beforeinstallingthe CBradio,
visuallycheckthe vehicle’s
batteryconnectionto deter-
minewhichterminal, positive
ornegative,isgrounded (pos-
itiveisthe largerofthe two)
to theengineblock (orchas-
sis).A negatively grounded
vehiclehas itsnegative lead
groundedtothe chassis.
Note
Connectingtoanaccessoryfuse
preventstheunitfrombeing left
onaccidentally,andalsoper-
mitsoperatingtheunitwithout
runningtheengine.
Note
Inpositivegroundvehiclesthe
redwiregoestothe chassisand
theblackwireisconnectedto
theignitionswitch.
Note
Whenconnectedto anaccesso-
ryfuse,unitwillselftestthe
emergencyweatheralertauto-
maticallywhenignitionis
turnedon.Turnsitselfon&off.
In a negative grounded vehicle, connect the
red lead of the DC power cord to an accessory
12 volt fuse.
Connect the black lead to the negative side of
the vehicle.This is usually the chassis. Any con-
venient location with a good electrical contact
(remove paint) may be used.
4
5
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
Mount the microphone
bracket on either side of
the unit (driver’s left)
using two screws sup-
plied.Bracket should be
placed under the dash
so microphone is readily
accessible.
6
7
Attach the 4-pin microphone cable to recepta-
cle on front of unit and Install unit in bracket
securely.
8
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 4

Ignition Noise InterferenceAntennas
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 back-
ground 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 signifi-
cantly discharge the vehicle’s battery.
Even though the Cobra 29 WX NW ST has an
automatic noise limiter, in some installations igni-
tion interference may be high enough to make
good communications impossible. Many possibili-
ties 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.
CB Antenna
Since the maximum allowable power output of
thetransmitter is limited by the FCC,the antenna
is critical in affecting transmission distance.Only a
properly matched antenna system will allow maxi-
mum power output.Cobra loaded type antenna
models are highly recommended for mostinstal-
lations.FormodelswithWeatherFeature(WX),a
DualBand (Center Load/Base Load) antenna is
recommended.Consult your Cobra dealer for fur-
ther details,or call 773.889.3087 and speak to a
Cobra representative.
Marine Installation
The transceiver will not operate at maximum effi-
ciency 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.
CB Antenna
7
Note
Foroptimumperformancein
passengercarstheidealanten-
nalocationisonthecenterof
theroof.Secondchoiceisonthe
centerofthetrunk.
Note
Becausemanynewertrucks
featurefiberglassdoorskins,the
outsidemirrormustbeground-
edtothechassisvia aground
strap,iftheantenna ismounted
onthemirrorbracket.
Note
3-wayCombinationAntennas
arealsoavailablewhichallow
operationofallthreebands
(AM-FM & CB),using a single
antenna.However,thistypeof
antennausuallyresultsinless
thannormaltransmitand
receiverangewhencompared
toastandard-type“Single
Band”CBantenna.Call773-
889-3087forfurtherinforma-
tion.
6
1A standard antenna connector is provided
on the transceiver for easy connection.
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 6

The CB/PA button should be in the
CB position.
Operation
9
Operation
Turning On Setting Channel
Selector
8
Turning On
Make sure the power cord,antenna and micro-
phone are connected to their proper connectors
before starting.
Setting Channel Selector
2
1
Rotate the On/Off Volume knob clockwiseto
a normal listening level.
Select one of forty channels and adjust
volume.The selected channel is indicated by
the LED readout directly above the channel
selector knob
1
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 8

While holding mic
button adjust the
SWR CAL knob so the
meter needle swings
to the CAL ▼mark on
the meter (located on the right).
OperationOperation
Calibrate For
SWR (Standing
Wave Ratio)
1110
continued
Note
Calibrationmustbemadein an
openarea(neverinagarage).
Vehicledoorsmustbeclosed.No
oneshouldbestandingnearthe
antenna.(See your antenna
directionsformorecomplete
information).
Note
Thereadingwillbeslightly high-
eronChannels1and40com-
paredtoChannel20.
Pushandhold mic button.
Switch to the CAL position.
2
1
3
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 opti-
mum performance.
Select channel 20.
4
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 10

Rotate the On/OffVolume knob clockwise
the green RT/TX LED will be illuminated.
Repeat the same steps two through five on
Channel 1 and 40.This will check SWR for all
channels.
The S/RF-SWR-CAL switch must be in the
S/RF position to read the meter.
6
While still holding down the mic button,set
the S/RF SWR CAL switch to the SWR position,
to read the SWR reading.
5
Operation
13
Operation
12
1
Note
WhenswitchedtoSWRposi-
tionthemeterneedleshould
ideallybeasfarto the left as
possible.Anythingover3 is
notacceptable. Aslight
antennaheightadjustment
(higherorlower)maybe
required.Repeatrecalibration
steps.
S-Meter
S-Meter
Swings proportionately to strength of incoming
signal when receiving.
Switch to NOR to select desired channel.
1
Selecting A
Channel
Selecting A Channel
Note
Switchto9(Emergency)or 19
(Information)forinstantaccess
tothesechannels.
To Receive
1
To Receive
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 12

OperationOperation
1514
Activating
SoundTracker
™
Pushand release the ST button.Red LED
is illuminated when SoundTracker™ is
turned on.
1
The SoundTrackerTM System
While previous systems only “blanket out”or limit
noise in higher sound frequencies, the revolution-
ary new SoundTrackerTM System actually reduces
noise while leaving the signal intact in the recep-
tion 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 SoundTrackerTM Works
OnReception-“Cutsnoisecomingin”
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.
OnTransmission-“Strengthenssignalsgoingout”
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.
Note
SoundTracker™givesyou
clearer,cleanerreceptionto
improveCBcommunications
whileontheair.
Activating SoundTracker™
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 14

Whenswitched to ANL the Automatic Noise
Limiter is activated.This helps reduce noise
created by the vehicle’s electronics.
Whenswitched to NB/ANL position the RF
Noise Blanker is also activated,providing
increased noise filtration.
Whenswitched to OFF position all noise
filtration will be turned off.
OperationOperation
1716
NB-ANL/ANL/
OFF (Noise
Blanker/
Automatic
Noise Limiter)
Switch
RF Gain Control
RF Gain Control
The RF Gain is used to optimize reception in
strong or weak signal areas.
Note
TheRFGainisused tooptimize
receptioninweaksignalareas..
Note
TheRFnoiseblankeris very
effectiveinreducingrepetitive
noisessuchasignitioninterfer-
ence.
Rotate the RF Gain knob counterclockwise
to reduce gain in strong signal areas. In weak
signal areas turn clockwise to increase gain.
1
NB-ANL/ANL/OFF (Noise
Blanker/Automatic Noise Limiter) Switch
1
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 16

Full clockwise rotation closes the gate
allowing only very strong signals to enter.
Full counterclockwise rotation opens the
“gate”allowing all signals in.
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.
Dimmer Switch
Setting Squelch
Squelch is the “control gate”for incoming signals.
19
Dimmer Switch
18
Operation Operation
1
2
1
3
Rotatethe Dimmerknob clockwise formaxi-
mumbrightness;counter-clockwiseforminimum
Gate open
Gatesetto Desired
Squelch Setting(DSS)
Gateclosed
Setting Squelch
Note
TheDimmercontrolsthe
brightnessofthefrontpanel,
signalstrengthmeterand
channeldisplay.
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 18

Setting Dynamike
This controls the microphone sensitivity
(outgoing audio level).
ToTransmit
21
To Transmit Transmit
20
Setting
Dynamike
Caution!
Besuretheantennais properly
connectedtotheradiobefore
transmitting.Prolongedtrans-
mitting without an antenna,or
apoorlymatchedantenna,
couldcausedamageto the
transmitter.
Besuretoreadthe F.C.C.Rules
andRegulationsincludedwith
thisunitbeforetransmitting.
Operation Operation
1
Select desired channel.
1
Initially,set fully clockwise so that maxi-
mum voice volume is available.Dynamike
may have to be reduced in some conditions.
Transmit
Pushandhold mic button to transmit.
Transmitter is now activated.When transmit-
ting,hold the microphone two inches from
your mouth and speak in a clear,normal voice.
Release to receive.
1
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 20

OperationOperation
RF Meter
23
22
External Speaker
RF Meter
This meter swings proportionately to the RF
output (outgoing signal) while transmitting.
External Speaker
The external speaker jack is used for remote
receiver monitoring.
The S/RF-SWR-CAL switch must be in the
S/RF position.
1
Note
Theexternalspeakershould
have8-ohmimpedanceand be
ratedtohandleatleast 4.0
watts.Whentheexternalspeak-
er is plugged in,the internal
speakerisautomaticallydiscon-
nected.Seeaccessorypage39.
Note
Cobraexternalspeakers are
ratedat10watts.
Connect an external speaker to the external
speaker jack on the rear panel.
1
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 22

OperationOperation
PA (Public
Address)
2524
PA (Public Address)
Connect an external PA speaker to the PA jack
on the rear panel.
Set CB/PAswitchtoPAposition.
Pushandhold microphone button and speak
in a normal voice.Your voice will now transmit
on the PA speaker.
Adjust PA speaker volume with the
Dynamike control.
Note
Speakershouldhave8-ohm
impedanceandberatedto
handleatleast4.0watts.
Note
Thespeakershouldbedirected
awayfromthemicrophoneto
preventacousticfeedback.
Note
ActivityontheCBchannel will
beheardthroughthePA speak-
er.AdjustVolumeControltoa
normallisteninglevel.
1
2
3
4
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 24

OperationOperation
27
26
Weather
Information
When CB/WX is on WX position Weather Receiver
is activated.
Place CB/WX Switch in the WX position.
Turn the Weather Channel Selector (1-7) until
you find the Weather Channel with the clear-
est reception.Sometimes more than one
channel can be received, however,the closest
broadcast to you will be the one with the
clearest signal.
Operating Weather Channel Selector
Note
Foralistof weatherfrequencies
seespecificationinthe
FrequencyRangessectionon
page32.
Ifyouwishto receivealistingof
NOAA ‘WeatherRadio
Transmitterlocations,contact
yournearestNationalWeather.
ServiceOffice,orwriteto:
NationalWeatherService
(Attn:W/OM11) NOAA
SilverSprings,MD20910.
Foridealweatherreception use
adualbandantenna(center
load/baseload).
What You Should Know About Weather
If threatening weather is nearby,the National
Weather Service may broadcast a 10 second alert
tone.This tone will be heard through the CB,even
if the CB/WX Switch is in the CB mode or the unit
is turned off.
This enables you to monitor CB frequencies and
still be warned by the National Weather Service
Emergency Alert.When you hear the alert, place
the CB/WX switch in the WX position. You will
then be able to hear theWeather Warning
Broadcast.
You can completely disable the Emergency
Weather Alert feature by turning the Weather
Channel Selector to the position.
Your 29 WX NW ST has a special auto squelch cir-
cuit for weather transmission which disables your
squelch control.
If you are using the CB mode, remember to
change the CB/WX Switch from CB toWX every so
often to make sure you are continually tuned to
the clearest/closest weather band channel in case
an alert is broadcast.
Weather Radio
Weather
Channels
What is Weather Radio
NOAAWeather Radio (NWR) is a service of the
National Oceanic and Atmospheric Administration
(NOAA),of the U.S.Department of Commerce. 380
NWR stations are in operation by the U.S.
Government in addition to several NWR stations
that are maintained by private interest groups.The
capability is to supplement warnings by sirens and
by commercial radio and television. The 7 National
Weather Channels provide full coverage to keep
you informed of weather conditions,24 hours a
day,7 days a week.
1
2
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 26

Temporary Mobile Set-Up
29
Base Station
Operation
(From 120V AC
House Current)
Temporary
Mobile Set-Up
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 mag-
netic mount antenna allow you to quickly“install”
your transceiver for temporary use.
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.
Home And Office Set-Up
28
Warning!
Donotattempttooperatethis
transceiverbyconnectingit
directlyto120vac.
Note
Forfurtherinformationcall
CobraCustomerService
1.773.889.3087.
1
Connect properly installed and matched base
station antenna.
Simply connect the red (+) and black (-)
leads of the transceiver to the corresponding
terminals of the power pack.
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
2
3
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 28

How Your CB Can Serve YouHow Your CB Can Serve You
3130
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.”
No “Post number 10.
No tornado sighted.”
Yes “Out of gas on I-95 at mile
marker 211.”
No “Out of gas in my driveway.”
Yes “Four car accident on I-94 at
Exit 11. Send police and
ambulance.”
No “Traffic moving smoothly on I-94.”
Yes “Weather Bureau has issued
thunderstorm warning.
Bring sailboat into port.”
No “Attention motorists.
Weather Bureau advises snow
tomorrow will accumulate
4 to 6 inches.”
Yes “Fire in building at 539 Main,
Evanston.”
No “Halloween patrol number 3.
All quiet.”
1. Set to channel 9 for emergencies
Be sure antenna is properly connected.
2. CB Distress Data
When transmitting an emergency, you should
request a “REACT BASE”and provide the CB
distress data (called CLIP):
Call Sign Identifyyourself.
Location Beexact.
Injuries Number.Type.Trapped?
Problem Givedetails andhelpneeded.
TransmitCLIP repeatedlyso anymonitor can assist.
Channel 9
Emergency
Messages
Note
Ifnoresponseonchannel 9,
trychannels19or14.
• 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
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.
A Few Rules
You Should
Know
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 30

How Your CB Can Serve YouHow Your CB Can Serve You
3332
Code Meaning
10-29 Time is up for contact
10-30 Does not conform to FCC rules
10-33 Emergency traffic
10-34 Trouble at this station
10-35 Confidential information
10-36 Correct time is
10-37 Wrecker needed at
10-38 Ambulance needed
10-39 Message delivered
10-41 Turn to channel
10-42 Traffic accident at
10-43 Traffic tie up at
10-44 Have a message for
10-45 All units within range please report
10-50 Break channel
10-60 What is next message number?
10-62 Unable to copy.Use phone
10-63 Net directed to
10-64 Net clear
10-65 Awaiting your next message/assignment
10-67 All units comply
10-70 Fire at
10-71 Proceed, transmission in sequence
10-77 Negative contact
10-81 Reserve hotel room for
10-82 Reserve room for
10-85 My address is
10-91 Talk closer to mic
10-93 Check my frequency on this channel
10-94 Give me a long count
10-99 Mission completed, all units secure
10-200 Police needed at
CB 10-Codes
Citizen Bands have adopted the “10-CODES”for
standard questions and answers. These codes
providequick andeasy communication,especially
in noisy areas. Following are some of the more
common codes and meanings:
Code Meaning
10-1 Receiving poorly
10-2 Receiving well
10-3 Stop transmitting
10-4 OK,message received
10-5 Relay message
10-6 Busy,stand by
10-7 Out of service,leaving
10-8 In service, subject to call
10-9 Repeat message
10-10 Transmission completed standing by
10-11 Talking too rapidly
10-12 Visitors present
10-13 Advise weather/roads
10-16 Make pick up at
10-17 Urgent business
10-18 Anything for us?
10-19 Return to base
10-20 My location is
10-21 Call by phone
10-22 Report in person to
10-23 Stand by
10-24 Completed last assignment
10-25 Can you contact
10-26 Disregard last info
10-27 Moving to channel
10-28 Identify your station
CB 10-Codes
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 32

29 WX NW ST SpecificationsFrequency Ranges
3534
GENERAL
CHANNELS. . . . . . . . . . . . . . . . . . . . . . . CB - 40 CH
FREQUENCY RANGE CB - 26.965 TO 27.405 MHZ
WX - 162.400 TO 162.550 MHZ
FREQUENCYTOLERANCE. . . . . . . . . . 0.005 %
FREQUENCY CONTROL . . . . . . . . . . . . PLL (PHASE LOCK LOOP) SYNTHESIZER
OPERATING TEMPERATURE
RANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . -30° C TO + 50° C
MICROPHONE . . . . . . . . . . . . . . . . . . . . PLUG-IN DYNAMIC
INPUTVOLTAGE . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . .300TO 3000 HZ
OUTPUT IMPEDANCE . . . . . . . . . . . . . .50 OHMS,UNBALANCED
RECEIVER
SENSITIVITY . . . . . . . . . . . . . . . . . . . . . . .LESS THAN 1 µV FOR 10 dB(S+N) /N
SELECTIVITY . . . . . . . . . . . . . . . . . . . . . .6dB@ 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 dBCHANGE 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 . . . . . . . . . . . .300TO 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 4WATTS MIN.
(NOT SUPPLIED) . . . . . . . . . . . . . . . . . . .THE PA SPEAKER ALSO MONITORS THE
RECEIVER;SEPARATE JACK PROVIDED
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
The COBRA 29 WX 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.
1 26.965 21 27.215 1 162.400
2 26.975 22 27.225 2 162.425
3 26.985 23 27.255 3 162.450
4 27.005 24 27.235 4 162.475
5 27.015 25 27.245 5 162.500
6 162.525
6 27.025 26 27.265 7 162.550
7 27.035 27 27.275
8 27.055 28 27.285
9 27.065 29 27.295
10 27.075 30 27.305
11 27.085 31 27.315
12 27.105 32 27.325
13 27.115 33 27.335
14 27.125 34 27.345
15 27.135 35 27.355
16 27.155 36 27.365
17 27.165 37 27.375
18 27.175 38 27.385
19 27.185 39 27.395
20 27.205 40 27.405
Channel Channel
CB Freq. CB Freq.
Channel In MHz Channel In MHz
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 34

Optional Accessories
3736
ReplacementDCPowerCord
Forinvehicleuse
426-002-N-001 $7.50
ReplacementMounting
Bracket
Forinvehicleuse
251-353-9-001 $4.50
ReplacementThumb Screws
Forinvehicleuse
634-081-9-001 $0.60
ReplacementMicrophone
Bracket
Forinvehicleuse
741-080-9-001 $0.45
28”FullRange CenterLoad,
MagneticMountAntenna
Forinvehicleuse
AT 35 $19.95
25”Glass Mount Antenna
Forinvehicleuse
AT55 $27.95
39”FullRange BaseLoad,
MagneticMount Antenna
Forinvehicleuse
AT70 $24.95
44”FullRange,CenterLoad,
DualBandCB/WXNWAntenna
Allowsgreatertransmission
rangewhile inamoving vehicle.
ATW-400 $27.95
Replacement Dynamic
Microphone
Forinvehicleuse
CA73 $12.95
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.
This warranty may be enforced by the first consumer
purchaser, provided that the product is utilized within
the U.S.A.
COBRA will,without charge,repair or replace,at its option,
defective CB radios, products or component parts upon
delivery to the COBRA factory Service Department,accom-
panied 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.
Exclusions:This limited warranty does not apply;1) to any
product damaged by accident;2) in the event of misuse or
abuse of the product or as a result of unauthorized alter-
ations or repairs;3) if the serial number has been altered,
defaced or removed;4) if the owner of the product resides
outside the U.S.A.
All implied warranties, including warranties of
merchantability and fitness for a particular purpose
are limited in duration to the length of this warranty.
COBRA shall not be liable for any incidental,conse-
quential or other damages;including, without limita-
tion, damages resulting from loss ofuse or cost of instal-
lation.
Some states do not allow limitations on how long an
implied warranty lasts and/or do not allow the exclu-
sion or limitation of incidental or consequential dam-
ages,so the above limitations may not apply to you.
CobraElectronics
Corporation
6500WestCortlandStreet
Chicago,Illinois60707
Limited Two Year Warranty
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 36

3938
Accessory Order Form
Tax Table
Illinois residents add 7%
Cook Co.residents add .75% (7.75% total)
Chicago residents add 1% (8.75% total)
Indiana residents add 5%
For credit card orders fill out order form
and fax to:1.773.622.2269
or call 1.773.889.3087
(Press 1 from the main menu)
8:00 am - 8:00 pm,M-F,CST.
Make check or money order (no stamps)
payable to:
Cobra Accessories Dept.
6500West CortlandSt.Chicago,IL 60707
Prices subject to change without notice.
Please print clearly
Name
Address (No P.O. Box)
City State
Zip
Telephone ( )
Credit Card No. Exp.Date
Customer Signature
Circle One: Visa MasterCard Discover
Allow4to6weeksfordelivery.Offer valid in Continental U.S.only.
Subtotal
(Tax if applicable)
Shipping/handling
Total
Item # Description Cost Ea. Qty. Amount
426-002-N-001 Replacement DC Power Cord$7.50
251-353-9-001 Replacement MountingBracket $4.50
634-081-9-001 ReplacementThumb Screws $0.60
741-080-9-001 Replacement Microphone Bracket $0.45
AT 35 28”Full Range Center Load,
Magnetic Mount Antenna $19.95
AT 55 25”Glass Mount Antenna $27.95
AT 70 39”Full Range Base Load,
Magnetic Mount Antenna $24.95
ATW 400 44”Full Range, Center Load,
Dual Band CB/WX NW Antenna $27.95
CA 73
Replacement Dynamic Microphone $12.95
CA 75 Power Microphone $21.95
CA 77
Noise Canceling/Power Microphone $24.95
CA79 Echo/Noise Canceling Microphone $59.95
CS 100 Dynamic External Speaker $14.95
CS 300 Noise Canceling External Speaker $19.95
CS 500 Dynamic Noise Canceling
With Talk Back External Speaker $24.95
Michigan residents add 4 %
Ohio residents add 6%
Wisconsin residents add 5%
Shipping&Handling
Amount of Shipping/
Order Handling
$25.00 and under $4.75 minimum
$25.01-$40.00 $6.95
$40.01-$80.00 $9.25
$80.01-$120.00 $10.25
$120.01-$160.00 $11.75
$160.01 and up $14.50
For AK,HI and PR please add
anadditional$15.00forUPS
shipments.
You Can Find These Fine Accessories At Your Local
Cobra CB Dealer
If you wish,you can order directly from Cobra.
Order by phone
Call 1.773.889.3087
(Press 1 from the main menu) 8 a.m.-8 p.m. M-F CST.
Order by mail or fax
Please fill out order form on next page, and mail/fax directly
to Cobra.
Optional Accessories
DynamicExternalSpeaker
Forinvehicleuse
CS100 $14.95
NoiseCancelingExternal
Speaker
Forinvehicleuse
CS300 $19.95
DynamicNoise Canceling
With Talk Back External
Speaker
Forinvehicleuse
CS500 $24.95
PowerMicrophone
Forinvehicleuse
CA75 $21.95
NoiseCanceling/Power
Microphone
Forinvehicleuse
CA77 $24.95
Echo/NoiseCanceling
Microphone
Forinvehicleuse
CA 79 $59.95
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 38