25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 1
How to Use Your
Cobra 25 WX NW ST
Contents
Features...........................................................................................1
The CB Story..................................................................................A1
FCC Regulations
FCC Warnings
Included Accessories
Controls & Indicators ................................................................A2
Our Thanks to You ......................................................................A3
™
SoundTracker
Features of This Product
• 40 CB Radio Channels
• SoundTracker™ System
Customer Support
Installation
Location.......................................................................................2
Mounting and Connection...................................................2
Antennas
CB Antenna................................................................................6
Marine Installation...................................................................6
Ignition Noise Interference ...................................................7
Operating Your 25 WX NW ST
• Heavy-Duty Dynamic
Microphone
• Full 4Watts AM RF Power Output
• Instant Channel 19 and 9
Turning On Your CB.................................................................8
Setting Channel Selector.......................................................9
To Receive ...................................................................................10
Selecting a Channel................................................................10
S-Meter.........................................................................................11
• Front Panel 4-Pin Microphone
Connector
™
SoundTracker System.........................................................12
™
Activating SoundTracker ..................................................13
NB, Off (Noise Blanker) Switch.............................................14
ANL (Automatic Noise Limiter) Switch.............................14
Dim Control................................................................................15
RF Gain Control.........................................................................15
Setting Squelch.........................................................................16
To Transmit.................................................................................18
Transmit.......................................................................................18
RF Meter......................................................................................19
External Speaker.......................................................................19
PA (Public Address)..................................................................20
Weather Channels....................................................................23
Home And Office Set-Up.......................................................24
Temporary Mobile Set-Up.....................................................25
How Your CB Can Serve You...................................................26
A Few Rules You Should Know............................................26
Channel 9 Emergency Messages.......................................26
Weather Channel Messages.................................................27
CB 10 Codes...............................................................................28
Frequency Ranges......................................................................30
25 WX NW ST Specifications..................................................31
Warranty Information ..............................................................32
Optional Accessories ..........................................................33-34
Order Form ....................................................................................35
If You Think You Need Service .............................Back Cover
• Switchable Noise Blanker
• Adjustable Dynamike Boost
• Tactile Controls
• 7 Weather Channels
• Emergency Weather Alert
• 9 Ft Mic Cord
• Illuminated Front Panel
• Dimmer Control
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
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 4
Installation
Installation
Note
Connecting to an accessory fuse
prevents the unit from being left
on accidentally, and also per-
mits operating the unit without
running the engine.
Note
In positive ground vehicles the
red wire goes to the chassis and
the black wire is connected to
the ignition switch.
6
7
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
Note
Mount the microphone
bracket on the right side
of the unit (driver’s left)
using two screws sup-
plied. Bracket should be
placed under the dash
so microphone is readily
accessible.
Before installing the CB radio,
visually check the vehicle’s
battery connection to deter-
mine which terminal, positive
or negative, is grounded (pos-
itive is the larger of the t wo)
to the engine block (or chas-
sis).A negatively grounded
vehicle has its negative lead
grounded to the chassis.
4
5
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.
Note
When connected to an accesso-
ry fuse, unit will self test the
emergency weather alert auto-
matically when ignition is
8
Attach the 4-pin microphone cable to recepta-
cle on front of unit and Install unit in bracket
securely.
turned on.Turns itself on & off.
4
5
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 6
Antennas
Ignition Noise Interference
Use of a mobile receiver at low signal levels is
CB Antenna
CB Antenna
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.
Since the maximum allowable power output of
the transmitter 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 most instal-
lations.For models with Weather Feature (WX),a
Dual Band (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.
Note
For optimum performance in
passenger cars the ideal anten-
na location is on the center of
the roof. Second choice is on the
center of the trunk.
Note
Even though the Cobra 25 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.
Because many newer trucks
feature fiberglass door skins, the
outside mirror must be ground-
ed to the chassis via a ground
strap, if the antenna is mounted
on the mirror bracket.
Note
1
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. Call
A standard antenna connector is provided
on the transceiver for easy connection.
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.
773.889.3087 for further infor-
mation.
6
7
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 8
Operation
Operation
Turning On
Setting Channel Selector
Turning On
Setting Channel
Selector
Make sure the power cord, antenna and micro-
phone are connected to their proper connectors
before starting.
1
Select
one of forty channels and adjust
volume.The selected channel is indicated by
the LED readout directly above the channel
selector knob
1
The CB/ANL/PA button should be in the
CB/ANL position and CB/WX on CB position.
2
Rotate the On/Off Volume knob
a normal listening level.
clockwiseto
8
9
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 10
Operation
Operation
S-Meter
To Receive
To Receive
S-Meter
Swings proportionately to strength of incoming
signal when receiving.
1
Rotate the
On/Off Volume knob clockwise
the green RT/TX/WX LED will be illuminated.
Selecting A Channel
Selecting A
Channel
Note
Switch to 9 (Emergency) or 19
(Information) for instant access
to these channels.
1
Switch to NOR to select desired channel.
10
11
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 12
Operation
Operation
TM
The SoundTracker System
Activating SoundTracker™
Activating
SoundTracker™
While previous systems only “blanket out”or limit
noise in higher sound frequencies, the revolution-
TM
ary new SoundTracker System actually reduces
Note
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.
SoundTracker™ gives you
clearer, cleaner reception to
improve CB communications
while on the air.
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.
1
Push and release the
is illuminated when SoundTracker™ is
turned on.
ST button. Red LED
TM
How SoundTracker Works
On Reception -“Cuts noise coming in”
With a normal CB, distant signals fall below
the squelch level and are unintelligible.With a
TM
SoundTracker 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”
TM
A SoundTracker 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.
12
13
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 14
Operation
Operation
NB, OFF (Noise Blanker) Switch
Dim Control
NB, OFF
(Noise Blanker)
Switch
Dim/Dyna
Control
Note
The RF noise blanker is very
effective in reducing repetitive
noises such as ignition interfer-
ence.
Note
The Dim controls the brightness
of the front panel,signal strength
meter and channel display.
1
1
When switched to NB position the RF Noise
Blanker is activated, providing increased noise
filtration.
Rotate the
maximum brightness; counter-clockwise
for minimum.
DIM knob clockwise for
When switched to OFF position Noise
Blanking Filtration will be turned off.
Setting Dynamike
This controls the microphone sensitivity
(outgoing audio level).
Setting
Dynamike
ANL (Automatic Noise Limiter) Switch
ANL (Automatic
Noise Limiter)
Switch
1
1
When switched to CB/ANL the Automatic
Initially, set fully
clockwise so that maxi-
Noise Limiter is activated.This helps reduce
noise created by the vehicle’s electronics.
mum voice volume is available. Dynamike
may have to be reduced in some conditions.
14
15
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 16
Operation
Operation
Gate set to Desired
Squelch Setting (DSS)
Setting Squelch
Squelch is the “control gate”for incoming signals.
Setting Squelch
Gate closed
3
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.
1
Full
clockwise rotation closes the gate
allowing only very strong signals to enter.
Gate open
2
Full
counterclockwise rotation opens the
“gate”allowing all signals in.
16
17
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 18
Operation
Operation
To Transmit
RF Meter
To Transmit
RF Meter
This meter swings proportionately to the RF
output (outgoing signal) while transmitting.
Caution!
Be sure the antenna is properly
connected to the radio before
transmitting. Prolonged trans-
mitting without an antenna,or
a poorly matched antenna,
could cause damage to the
transmitter.
1
Select desired
channel.
Be sure to read the F.C.C.Rules
and Regulations included with
this unit before transmitting.
External Speaker
The external Speaker jack is used for remot e
receiver monitoring.
External Speaker
Transmit
Transmit
Note
The external speaker should
have 8-ohm impedance and be
rated to handle at least 4.0
watts.When the external speak-
er is plugged in,the internal
speaker is automatically discon-
nected.
Note
1
Connect an external speaker to the external
1
Cobra external speakers are
rated at 10 watts.See
Accessories page 39.
Push and hold 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.
speaker jack on the rear panel.
18
19
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 20
Operation
Operation
PA (Public Address)
PA (Public
Address)
Note
Speaker should have 8-ohm
impedance and be rated to
handle at least 4.0 watts.
Note
The speaker should be directed
away from the microphone to
prevent acoustic feedback.
1
Connect an external PA speaker to the PA jack
on the rear panel.
3
Push and hold microphone button and speak
in a normal voice.Your voice will sound on the
PA speaker.
Note
Activity on the CB channel will
be heard through the PA speak-
er. Adjust volume control to a
normal listening level.
2
Set CB/ANL PA switch to PA position.
4
Adjust PA speaker volume with the
Dynamike control.
20
21
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 22
Operation
Operation
What is Weather Radio
NOAA Weather Radio (NWR) is a service of the
What You Should Know About Weather
Weather Radio
Weather
Information
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.
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.
Note
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 the Weather Warning
Broadcast.
For a list of weather frequencies
see specification in the
Frequency Ranges section on
page 32.
If you wish to receive a listing of
NOAA ‘Weather Radio
Transmitter locations,contact
your nearest National Weather.
Operating Weather Channel Selector
You can completely disable the Emergency
Weather Alert feature by turning the Weather
Channel Selector to the off position.
Weather
Channels
Your 25 WX NW ST has a special auto squelch cir-
cuit for weather transmission which disables your
squelch control.
Service Office, or write to:
NationalWeather Service
(Attn:W/OM11) NOAA
Silver Springs, MD 20910.
If you are using the CB mode, remember to
change the CB/WX Switch from CB to WX every so
often to make sure you are continually tuned to
the clearest/closest weather band channel in case
an alert is broadcast.
For ideal weather reception use
a dual band antenna (center
load/baseload).
When CB/WX is on WX position Weather Receiver
is activated.
1
Place CB/WX Switch in the WX position.
2
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.
23
22
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 24
Home And Office Setup
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.
Base Station
Operation
(From 120V AC
House Current)
2
3
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
Warning!
Connect properly installed and matched base
station antenna.
Do not attempt to operate this
transceiver by connecting it
directly to 120 vac.
Temporary
Mobile Set-Up
Temporary Mobile Operation
Note
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.
For further information call
Cobra Customer Service
1.773.889.3087.
1
Simply connect the red (+) and black (-)
leads of the transceiver to the corresponding
terminals of the p ower pack.
25
24
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 26
How Your CB Can Serve You
• Warn of traffic problems
The FCC gives these examples of permitted and
prohibited messages for channel 9. These are
only guidelines and not all-inclusive:
• 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
Permitted Example Message
Yes
“Tornado sighted six miles north
of town.”
• Keep you alert while traveling
No
“Post number 10.
A Few Rules You Should Know
No tornado sighted.”
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.
Yes
“Out of gas on I-95 at mile
marker 211.”
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.
No
“Out of gas in my driveway.”
Yes
“Four car accident on I-94 at
Exit 11. Send police and
ambulance.”
E. You may not transmit music with a CB.
No
“Traffic moving smoothly on I-94.”
F. Selling of merchandise and/or services is
prohibited.
Yes
“Weather Bureau has issued
thunderstorm warning.
Bring sailboat into port.”
1. Set to channel 9 for emergencies
Channel 9
Emergency
Messages
Be sure antenna is properly connected.
No
“Attention motorists.
Weather Bureau advises snow
tomorrow will accumulate
4 to 6 inches.”
2. CB Distress Data
When transmitting an emergency, you should
request a “REACT BASE”and provide the CB
distress data (called CLIP):
Note
Yes
No
“Fire in building at 539 Main,
Evanston.”
C all Sign Identify yourself.
If no response on channel 9,
try channels 19 or 14.
L ocation Be exact.
“Halloween patrol number 3.
All quiet.”
I njuries Number.Type.Trapped?
P roblem Give details and help needed.
Transmit CLIP repeatedly so any monitor can assist.
27
26
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 28
How Your CB Can Serve You
How Your CB Can Serve You
Code Meaning
CB 10-Codes
CB 10-Codes
10-29 Time is up for contact
10-30 Does not conform to FCC rules
10-33 Emergency traffic
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:
10-34 Trouble at this station
10-35 Confidential information
10-36 Correct time is
Code Meaning
10-37 Wrecker needed at
10-38 Ambulance needed
10-39 Message delivered
10-1
10-2
10-3
10-4
10-5
10-6
10-7
10-8
10-9
Receiving poorly
Receiving well
Stop transmitting
OK,message received
Relay message
10-41 Turn to channel
10-42 Traffic accident at
10-43 Traffic tie up at
Busy, stand by
10-44 Have a message for
10-45 All units within range please report
10-50 Break channel
Out of service, leaving
In service, subject to call
Repeat message
10-60 What is next message number?
10-62 Unable to copy.Use phone
10-63 Net directed to
10-10 Transmission completed standing by
10-11 Talking too rapidly
10-12 Visitors present
10-64 Net clear
10-13 Advise weather/roads
10-16 Make pick up at
10-65 Awaiting your next message/assignment
10-67 All units comply
10-17 Urgent business
10-18 Anything for us?
10-19 Return to base
10-70 Fire at
10-71 Proceed, transmission in sequence
10-77 Negative contact
10-20 My location is
10-81 Reserve hotel room for
10-82 Reserve room for
10-21 Call by phone
10-22 Report in person to
10-23 Stand by
10-85 My address is
10-91 Talk closer to mic
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
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
28
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 30
Frequency Ranges
25 WX NW ST Specifications
GENERAL
The COBRA 25 WX NW ST transceiver represents
CHANNELS . . . . . . . . . . . . . . . . . . . . . . . CB - 40 CH
FREQUENCY RANGE. . . . . . . . . . . . . . . CB - 26.965 TO 27.405 MHZ
WX - 162.400 TO 162.550 MHZ
FREQUENCY TOLERANCE . . . . . . . . . . 0.005 %
FREQUENCY CONTROL . . . . . . . . . . . . PLL (PHASE LOCK LOOP) SYNTHESIZER
OPERATING TEMPERATURE
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.
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)
Channel
Freq.
Channel In MHz
Channel
Freq.
Channel In MHz
Weather
Weather Freq.
Channel In MHz.
SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5/8”D X 6-3/8”W X 2-13/64”H
WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . .4 LBS.
ANTENNA CONNECTOR . . . . . . . . . . . .UHF; SO-239
METER . . . . . . . . . . . . . . . . . . . . . . . . . . .ILLUMINATED;INDICATES RELATIVE
POWER OUTPUT AND RECEIVED
CB
CB
SIGNAL STRENGTH
1
2
3
4
5
26.965 21
26.975 22
26.985 23
27.005 24
27.015 25
27.215
1
2
3
4
5
6
7
162.400
TRANSMITTER
27.225
27.255
27.235
27.245
162.425
162.450
162.475
162.500
162.525
162.550
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 10 dB (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
6
7
8
9
27.025 26
27.035 27
27.055 28
27.065 29
27.075 30
27.265
27.275
27.285
27.295
27.305
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 . . . . . . . . . . . . . . . . . . . . . . . . .ADJUSTABLET; HRESHOLD LESSTHAN 1µV
AUDIO OUTPUT POWER . . . . . . . . . . .4 WATTS
10
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
11
12
13
14
15
27.085 31
27.105 32
27.115 33
27.125 34
27.135 35
27.315
27.325
27.335
27.345
27.355
PA SYSTEM
POWER OUTPUT . . . . . . . . . . . . . . . . . .4 WATTS INTO EXTERNAL SPEAKER
EXTERNAL SPEAKER FOR PA . . . . . . . .8 OHMS, 4 WATTS MIN.
(NOT SUPPLIED) . . . . . . . . . . . . . . . . . .THE PA SPEAKER ALSO MONITORS THE
RECEIVER;SEPARATE JACK PROVIDED
16
17
18
19
20
27.155 36
27.165 37
27.175 38
27.185 39
27.205 40
27.365
27.375
27.385
27.395
27.405
Weather
SENSITIVITY . . . . . . . . . . . . . . . . . . . . . . .LESS THAN 1 uV FOR 12 dB SINAD
IF FREQUENCY . . . . . . . . . . . . . . . . . . . .DUAL CONVERSION
1st: - 10.690 MHz
2nd: - 455 KHz
AUDIO OUTPUT . . . . . . . . . . . . . . . . . . .MAXIMUM 500 mW AT 10% DISTORTION
FREQUENCY RESPONSE . . . . . . . . . . . .300 - 3000 HZ AT -6dB
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 32
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.
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.
Replacement Mounting
Bracket
Replacement Thumb Screws
Replacement DC Power Cord
For in vehicle use
For in vehicle use
For in vehicle use
251-199-9-001
634-081-9-001
$0.60
426-002-N-001
$7.50
Cobra Electronics
Corporation
$4.50
6500 West Cortland Street
Chicago, Illinois 60707
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.
Replacement Microphone
Bracket
28”Full Range Center Load,
Magnetic Mount Antenna
25”Glass Mount Antenna
For in vehicle use
For in vehicle use
For in vehicle use
AT 55
$27.95
741-080-9-001
$0.45
AT 35
$19.95
All implied warranties, including warranties of
merchantability and fitness for a particular pur pose
are limited in duration to the length of this war ranty.
COBRA shall not be liable for any incidental, conse-
quential or other damages;including, without limita-
tion, damages resulting from loss of use 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 ab ove limitations may not apply to you.
39” Full Range Base Load,
Magnetic Mount Antenna
44”Full Range, Center Load,
Dual Band CB/WX Antenna
Replacement Dynamic
Microphone
For in vehicle use
Allows greater transmission
For in vehicle use
AT 70
$24.95
range while in a moving vehicle. CA 73
$12.95
ATW-400
$27.95
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 34
Accessory Order Form
Description
Optional Accessories
Item #
Cost Ea. Qty. Amount
426-002-N-001 Replacement DC Power Cord
251-199-9-001 Replacement Mounting Bracket
634-081-9-001 Replacement Thumb Screws
$7.50
$4.50
$0.60
741-080-9-001 Replacement Microphone Bracket $0.45
AT 35
28” Full Range Center Load,
Magnetic Mount Antenna
25” Glass Mount Antenna
39”Full Range Base Load,
Magnetic Mount Antenna
44”Full Range, Center Load,
Dual Band CB/WX Antenna
Replacement Dynamic Microphone
Power Microphone
$19.95
$27.95
AT 55
AT 70
$24.95
Power Microphone
Noise Canceling/Power
Microphone
Echo/Noise Canceling
Microphone
ATW 400
For in vehicle use
CA 75
$27.95
$12.95
$21.95
$24.95
$21.95
For in vehicle use
CA 79
For in vehicle use
CA 77
CA 73
CA 75
CA 77
CA79
$59.95
$24.95
Noise Canceling/Power Microphone
Echo/Noise Canceling Microphone $59.95
CS 100
CS 300
CS 500
Dynamic External Speaker
$14.95
$19.95
Noise Canceling External Speaker
Dynamic Noise Canceling
Shipping & Handling
Amount of
Order
Shipping/
Handling
With Talk Back External Speaker
$24.95
$25.00 and under $4.75 minimum
Subtotal
Prices subject to change without notice.
$25.01-$40.00
$40.01-$80.00
$80.01-$120.00
$6.95
$9.25
$10.25
Tax Table
Dynamic External Speaker
Noise Canceling External
Speaker
Dynamic Noise Canceling
With Talk Back External
Speaker
(Tax if applicable)
Shipping/handling
Total
Illinois residents add 7%
Michigan residents add 4 %
Cook Co.residents add .75% (7.75% total) Ohio residents add 6%
For in vehicle use
Chicago residents add 1% (8.75% total)
Indiana residents add 5%
Wisconsin residents add 5%
CS 100
$14.95
For in vehicle use
$120.01-$160.00 $11.75
$160.01 and up $14.50
For AK,HI and PR please add
an additional $15.00 for UPS
shipments.
CS 300
$19.95
For in vehicle use
For credit card orders fill out order form
and fax to: 1.773.622.2269
or call 1.773.889.3087
8:00 am - 8:00 pm,M-F, CST.
Make check or money order (no stamps)
payable to:
Cobra Accessories Dept.
6500West Cortland St.Chicago, IL 60707
CS 500
$24.95
(Press 1 from the main menu)
Please print clearly
Name
You Can Find These Fine Accessories At Your Local
Cobra CB Dealer
If you wish, you can order directly from Cobra.
Address (No P.O. Box)
City
Zip
State
Order by phone
Call 1.773.889.3087
(Press 1 from the main menu) 8 a.m.-8 p.m. M-F CST.
Telephone (
)
Credit Card No.
Exp. Date
Order by mail or fax
Please fill out order form on ne xt page, and mail/fax directly
to Cobra.
Customer Signature
Circle One: Visa MasterCard Discover
Allow 4 to 6 weeks for delivery. Offer valid in Continental U.S.only.
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 36
Notes
Notes
Notes
Notes
36
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 38
25 WX NW ST
Cobra Electronics Corporation
6500 West Cortland Street
Chicago, IL60707
Operating Instructions
for your Cobra 25 WX NW ST
If You Think You Need Service
For technicalassistance,please call our Automated Help Desk which can assist
you by answering the most frequentlyasked questions about Cobra products.
CB Radio
(773) 889-3087
24 hours a da y, 7 days a week.
A Consumer Service Representative can be reached through this same number 8:00 am - 8:00
pm,Monday through Friday, CST.
Technical assistance is also a vailable on-line in the Frequently Asked Questions (FAQ) section at
If you think you need service call 1.773.889.3087
“If your product should require factory service please call Cobra first before sending your unit in.
This will ensure the fastest turn-around time on your repair.”
You may be asked to send your unit to the Cobra factory. It will be necessary to furnish the follo w-
ing in order to have the product serviced and returned.
1. For Warranty Repair include some form of proof-of-purchase, such as a mechanical reproduction
or carbon or a sales receipt. If you send the original receipt it cannot be returned.
2. Send the entire product.
3. Enclose a description of what is happening with the unit.Include a typed or clearly print name
and address of where the unit is to be returned .
4. Pack unit securely to prevent damage in transit. If possible, use the original packing material.
5. Ship prepaid and insured by way of a traceable carrier such as United Parcel Service (UPS) or First
Class Mail: to avoid loss in transit to: Cobra Factory Service,Cobra Electronics Corporation,6500
W. Cortland St., Chicago, IL 60707.
6. If the unit is in warranty, upon receipt of your unit it will either be repaired or exchanged
depending on the model. Please allow approximately 3 to 4 weeks before contacting us for
status. If the unit is out of warranty a letter will automatically be sent informing you of the
repair charge or replacement charge. If you have any questions, please call 1.773.889.3087 for
assistance.
Cobra Electronics Corp.© 1999
Printed in China
Part No. 480-291-P-001
“Ingenious Products for Easier Communication.”
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 40
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
FCC Regulations
1
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 “broad-
casting.”
FCC Warnings
All transmitter adjustments other than those
supplied by the manufacturer as front panel
operating controls, must be made by, or under
the supervision of, the holder of an FCC-issued
General Radio-Telephone Operator’s License.
4
Replacement or substitution of transistors, regular
diodes or other parts of a unique nature, with
parts other than those recommended by Cobra,
may cause violation of the technical regulations
of Part 95 of the FCC Rules, or violation of Type
Acceptance requirements of Part 2 of the Rules.
You should read and understand Part 95 (included
with this unit) of the FCC Rules and Regulations,
before operating your Cobra radio, even though
the FCC no longer requires you to obtain an oper-
ator’s license.
What’s Included with Your 25 WX NW ST
1. CB transceiver
2. Microphone
6. DC power cord
7. FCC rules
5
3. Transceiver bracket
4. Microphone bracket
5. Operating Manual
1. (not pictured)
A1
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25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 41
Controls and Indicators
Our Thanks to You
Thank you for purchasing the Cobra 25 WX NW ST
CB Radio. Properly used, this Cobra product will
give you many years of reliable service.
1. 4-Pin MicrophoneConnector
2. Power On/Off/Volume
3. Squelch
Cobra Customer Service
16
Live operators are available
M-F 8:00 am - 8:00 pm CST at:
773.889.3087
TM
SoundTracker
4. DIM/Dynamike
“Cuts noise coming in...strengthens signals
going out.”
5. Weather Channel Selector
6. Channel Selector
Automated Technical Assistance
available 24 hours a day, seven
days a week.E-mail questions
to:
This Patent pending technology dramatically
improves transmission and reception of CB
signals.
7. LED Channel Display
8. Sound Tracker™ LED
9. RX (Receive)/ TX (Transmit)
productinfo@cobraelec.com
TM
/WX Weather LED Indicator
The revolutionary SoundTracker System recon-
figures the transmission signal which allows it to
be transferred more efficiently through cluttered
airwaves.
Cobra on the World Wide Web:
Frequently Asked Questions
(FAQ) can be found on-line at:
10. Sound Tracker™ On/Off
11. Channel 19/Channel 9/
Normal Switch
11
9
13 12
14
8
12. CB/Weather Switch
13. NB/Off Switch
At the same time, it significantly reduces the
amount of static on all incoming CB signals.
7
15
10
14. CB/ANL PA Switch
15. Signal Strength Meter
16. Microphone
The end result is a cleaner, clearer sounding
reception of signals and a more powerful
transmission which dramatically improves
CB communications.
1
2
3
4
5
6
Back Side
17. Public Address Speaker Jack
18. External Speaker Jack
19. Antenna Connector
20. Power Jack
Customer Support
17 18
Should you encounter any problems with the
product or not understand its many features,
please refer to this owner’s manual. If ,after
referring to the manual, you still need help,
call Cobra Customer Service at 773.889.3087.
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20
A2
A3
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