Cobra 25 WX NW ST User Manual

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 1

How to Use Your

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 25 WX NW ST

Turning On Your CB.................................................................8

Setting Channel Selector.......................................................9

To Receive...................................................................................10

Selecting a Channel................................................................10

S-Meter.........................................................................................11

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

ToTransmit.................................................................................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 ServeYou...................................................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

™

Cobra 25 WX NW ST

Features of This Product

• 40 CB Radio Channels

• SoundTracker™System

• Heavy-Duty Dynamic
Microphone

• Full 4 Watts AM RF Power Ou t p u t

• Instant Channel 19 and 9

• Front Panel 4-Pin Microphone
Connector

• Switchable Noise Blanker

• Adjustable Dynamike Boost

• Tactile Controls

• 7Weather Channels

• EmergencyWeather 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

P E R S O N N E L

!

!

1

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 2

InstallationInstallation

Location

Mounting and
Connection

Note

The transceiver is held in the
universal mounting bracket by
two thumbscrews which allow
for adjustment at a convenient
angle.

The bracket includes two self­tapping screws and star wash­ers.The mounting must be
mechanically strong,conve­niently located.

Location

Plan location of transceiver and microphone
bracket before starting the installation.

Select a location that is convenient for operation,
yet does not inte rfe re with the dri ver or passenger.

The transceiver is usually mounted to the under­side of the dash with the microphone bracket
beside it.

Mounting and Connection

1

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.

2

Drill the holes and secure the bracket.

continued

32

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 4

Note

Connecting to an accessory fuse
prevents the unit from being left
on accidentally,and also per­mits 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

Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.

InstallationInstallation

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.

Note

When connected to an accesso­ry fuse,unit will self test the
emergency weather alert auto­matically when ignition is
turned on.Turns itself on & off.

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.

7

Mount the microphone
bracket on the right side
of the unit (driver’s left)
using two screws sup­plied.Bracket should be
placed under the dash
so microphone is readily
accessible.

8

Attach the 4-pin microphone cable to recepta­cle on front of unit and Install unit in bracket
securely.

54

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 6

Ignition Noise InterferenceAntennas

CB Antenna

Note

For optimum performance in
passenger cars the ideal anten­na location is on the center of
the roof.Second choice is on the
center of the trunk.

Note

Because many newer trucks
feature fiberglass door skins,the
outside mirror must be ground­ed to the chassis via a ground
strap,if the antenna is mounted
on the mirror bracket.

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.Call

773.889.3087 for further infor­mation.

CB Antenna

Si n ce the maximum allowable power output of
the tra n s m i t ter is limited by the FCC ,the ante n n a
is cri t i cal in affe cting transmission distance.Only a
p ro pe rly matched antenna sys tem will allow maxi­mum power output.Co b ra loaded ty pe ante n n a
m odels are highly re commended for most instal­l at i o n s.For models with Weather Fe a t u re (W X ) ,a

Dual Band (Ce n ter Lo a d / Base Load) antenna is
re co m m e n d e d. Consult your Co b ra dealer for fur-

ther details,or call 773.889.3087 and speak to a
Co b ra re p re s e nt at i ve.

1

A standard antenna connector is provided
on the transceiver for easy connection.

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.

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 25 WX 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.

6

7

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 8

Operation

Turning On Setting Channel

Turning On

Make sure the power cord,antenna and micro­phone are connected to their proper connectors
before starting.

1

The CB/ANL/PA button should be in the

CB/ANL position and CB/WX on CB position.

Setting Channel Selector

1

Select one of forty channels and adjust
volume.The selected channel is indicated by
the LED readout directly above the channel
selector knob

Operation

Selector

2

Ro t ate the On/Off Volume knob c l oc kw i s e to
a normal listening level.

8

9

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 10

Operation

To Receive

Selecting A
Channel

Note

Switch to 9 (Emergency) or 19
(Information) for instant access
to these channels.

To Receive

1

Rotate the On/Off Volume knob clockwise

the green RT/TX/WX LED will be illuminated.

Selecting A Channel

S-Meter

Swings proportionately to strength of incoming
signal when receiving.

Operation

S-Meter

1

Switch to NOR to select desired channel.

10

11

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 12

OperationOperation

Note

SoundTracker™ gives you
clearer,cleaner reception to
improve CB communications
while on the air.

The SoundTrackerTMSystem

While previous systems only “blanket out”or limit
noise in higher sound frequencies,the revolution­ary new SoundTrackerTMSystem 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 SoundTrackerTMWorks

On Reception - “Cuts noise coming in”

With a normal CB,distant signals fall below
the squelch level and are unintelligible.With a
SoundTrackerTMCB,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 - “Strengthens signals going out”

A SoundTrackerTMCB 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.

Activating SoundTracker™

1

Push and release the ST button.Red LED
is illuminated when SoundTracker™ is
turned on.

Activating
SoundTracker

™

1312

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 14

OperationOperation

NB, OFF
(Noise Blanker)
Switch

Note

The RF noise blanker is very
effective in reducing repetitive
noises such as ignition interfer­ence.

ANL (Automatic
Noise Limiter)
Switch

NB,OFF (Noise Blanker) Switch

1

When switched to NB position the RF Noise
Blanker is activated,providing increased noise
filtration.
When switched to OFF position Noise
Blanking Filtration will be turned off.

ANL (Automatic Noise Limiter) Switch

Dim Control

1

Rotate the DIM knob clockwise for
maximum brightness;counter-clockwise
for minimum.

Setting Dynamike

This controls the microphone sensitivity
(outgoing audio level).

Dim/Dyna
Control

Note

The Dim controls the brightness
of the front panel,signal strength
meter and channel display.

Setting
Dynamike

1

When switched to CB/ANL the Automatic
Noise Limiter is activated.This helps reduce
noise created by the vehicle’s electronics.

1

Initially,set fully clockwise so that maxi­mum voice volume is available.Dynamike
may have to be reduced in some conditions.

1514

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 16

Operation Operation

Setting Squelch

Gate closed

Gate open

Setting Squelch

Squelch is the “control gate”for incoming signals.

1

Full clockwise rotation closes the gate
allowing only very strong signals to enter.

2

Full counterclockwise rotation opens the
“gate”allowing all signals in.

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.

Gate set to Desired
Squelch Setting (DSS)

1716

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 18

Operation Operation

To Transmit

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.

Be sure to read the F.C.C.Rules
and Regulations included with
this unit before transmitting.

Transmit

ToTransmit

1

Select desired channel.

Transmit

1

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.
Releaseto receive.

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.

1

Connect an external speaker to the external
speaker jack on the rear panel.

RF Meter

External Speaker

Note

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 10 watts.See
Accessories page 39.

18

19

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 20

Operation Operation

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.

Note

Activity on the CB channel will
be heard through the PA speak­er.Adjust volume control to a
normal listening level.

PA (Public Address)

1

Connect an external PA speaker to the PA jack
on the rear panel.

2

Set CB/ANL PA switch to PA position.

3

Push and hold microphone button and speak
in a normal voice.Your voice will sound on the
PA speaker.

4

Adjust PA speaker volume with the

Dynamike control.

2120

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 22

OperationOperation

Weather Radio

Weather
Channels

What is Weather Radio

NOAA Weather 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.
Weather Channels provide full coverage to keep

you informed of weather conditions,24 hours a
day,7 days a week.

The 7 National

Operating Weather Channel Selector

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 clear­est reception.Sometimes more than one
channel can be received,however,the closest
broadcast to you will be the one with the
clearest signal.

WhatYou 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 the Weather Warning
Broadcast.

You can completely disable the Emergency
Weather Alert feature by turning the Weather
Channel Selector to the off position.

Your 25 WX NW ST has a special auto squelch cir­cuit 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
Information

Note

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.

Service Office,or write to:
National Weather Service
(Attn:W/OM11) NOAA
Silver Springs,MD 20910.

For ideal weather reception use
a dual band antenna (center
load/baseload).

22

23

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 24

Home And Office Setup

Base Station
Operation
(From 120V AC
House Current)

Warning!

Do not attempt to operate this
transceiver by connecting it
directly to 120 vac.

Note

For further information call
Cobra Customer Service

1.773.889.3087.

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.

Temporary Mobile Set-Up

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.

Temporary
Mobile Set-Up

1

Simply connect the red (+) and black (-)
leads of the transceiver to the corresponding
terminals of the power pack.

24

25

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 26

How Your CB Can Serve You

A Few Rules
You Should
Know

Channel 9
Emergency
Messages

Note

If no response on channel 9,
try channels 19 or 14.

• 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. Co nve r s ations cannot last more than 5 minute s

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.

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):

C all Sign Identify yourself.

L ocation Be exact.

I njuries Number.Type.Trapped?

P roblem Give details and help needed.

Transmit C L I P re pe atedly so any monitor can assist.

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.”

26

27

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 28

How Your CB Can Serve YouHow 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
p rovide quick and easy co m m u n i cat i o n ,e s pe c i a l l y
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

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

2928

25 WX NW ST SpecificationsFrequency Ranges

3130

The COBRA 25 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 Weather
CB Freq. CB Freq. Weather Freq.
Channel In MHz Channel In MHz Channel In MHz.

GENERAL

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

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 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

SIGNAL STRENGTH

TRANSMITTER

POWER OUTPUT . . . . . . . . . . . . . . . . . .4WATTS

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
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 . . . . . . . . . . . . . . . . . . . . . . . . .A D J U S TA B L E ;THRESHOLD LESS THAN 1µV

AUDIO OUTPUT POWER . . . . . . . . . . .4WATTS

FREQUENCY RESPONSE . . . . . . . . . . . .300 TO 3000 HZ

DISTORTION . . . . . . . . . . . . . . . . . . . . . .LESS THAN 7% @3 WATTS @ 1000 HZ

BUILT-IN SPEAKER . . . . . . . . . . . . . . . . .8 OHMS,5W

E XTERNAL SPEAKER (NOT SUPPLIED) 8 OHMS;DISABLES INTERNAL SPEAKER

WHEN CONNECTED

PA SYSTEM

POWER OUTPUT . . . . . . . . . . . . . . . . . .4WATTS INTO EXTERNAL SPEAKER

EXTERNAL SPEAKER FOR PA . . . . . . . .8 OHMS, 4 WATTS MIN.

(NOT SUPPLIED) . . . . . . . . . . . . . . . . . .THE PA SPEAKER ALSO MONITORS THE

RECEIVER;SEPARATE JACK PROVIDED

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)

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 30

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 32

Limited Two Year Warranty

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,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.

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 alter­ations 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,conse­quential or other damages;including,without limita­tion,damages resulting from loss of use or cost of instal­l at i o n .

Cobra Electronics
Corporation

6500 West Cortland Street
Chicago,Illinois 60707

Replacement DC Power Cord

For in vehicle use
426-002-N-001 $7.50

Replacement Microphone
Bracket

For in vehicle use
741-080-9-001 $0.45

Optional Accessories

Replacement Mounting
Bracket

For in vehicle use
251-199-9-001 $4.50

28”Full Range Center Load,
Magnetic Mount Antenna

For in vehicle use
AT 35 $19.95

Replacement Thumb Screws

For in vehicle use
634-081-9-001 $0.60

25”Glass Mount Antenna

For in vehicle use
AT 55 $27.95

Some states do not allow limitations on how long an
implied warranty lasts and/or do not allow the exclu­sion or limitation of incidental or consequential dam­ages,so the above limitations may not apply to you.

39”Full Range Base Load,
Magnetic Mount Antenna

For in vehicle use
AT 70 $24.95

44”Full Range,Center Load,
Dual Band CB/WX Antenna

Allows greater transmission
range while in a moving vehicle.
ATW- 4 0 0 $ 2 7 . 9 5

3332

Replacement Dynamic
Microphone

For in vehicle use
CA 73 $12.95

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 34

Optional Accessories

Power Microphone

For in vehicle use
CA 75 $21.95

Dynamic External Speaker

For in vehicle use
CS 100 $14.95

Noise Canceling/Power
Microphone

For in vehicle use
CA 77 $24.95

Noise Canceling External
Speaker

For in vehicle use
CS 300 $19.95

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.

Echo/Noise Canceling
Microphone

For in vehicle use
CA 79 $59.95

Dynamic Noise Canceling
With Talk Back External
Speaker

For in vehicle use
CS 500 $24.95

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
an additional $15.00 for UPS
shipments.

Accessory Order Form

Item # Description Cost Ea. Qty. Amount

4 2 6 - 0 0 2 - N - 0 0 1 Re p l a ce m e nt DC Power Co rd $ 7 . 5 0
2 5 1 - 1 9 9 - 9 - 0 0 1 Re p l a ce m e nt Mo u nting Bra c ke t $ 4 . 5 0
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 Antenna $27.95
CA 73
CA 75 Power Microphone $21.95
CA 77
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

Prices subject to change without notice.

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)

Please print clearly

Replacement Dynamic Microphone

Noise Canceling/Power Microphone

With Talk Back External Speaker $24.95

Michigan residents add 4 %
Ohio residents add 6%
Wisconsin residents add 5%

8:00 am - 8:00 pm,M-F,CST.
Ma ke check or money order (no stamps)
payable to:
Cobra Accessories Dept.
6500 West Co rtland St .Ch i ca g o,IL 60707

Name
Address (No P.O.Box)

City State
Zip
Telephone ( )
Credit Card No. Exp.Date
Customer Signature
Circle One: Visa MasterCard Discover

Allow 4 to 6 weeks for delivery.Offer valid in Continental U.S.only.

$12.95

$24.95

Subtotal
(Tax if applicable)
Shipping/handling

Total

3534

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 36

Notes

Notes

Notes

Notes

36

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 38

Cobra Electronics Corporation
6500 West Cortland Street
Chicago, IL60707

25 WX NW ST

IfYou Think You Need Service

For te c h n i cal assistance,please call our Au to m a ted Help Desk which can assist

you by answering the most fre q u e n t ly asked questions about Co b ra prod u ct s.

[phone]

24 hours a day,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 available on-line in the Frequently Asked Questions (FAQ) section at

www.cobraelec.com or by e-mail to [e-mail]

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 follow­ing 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.

O pe rating Instru ctions
for your Co b ra 25 WX NW ST

CB Radio

Cobra Electronics Corp.© 1999
Printed in China

Part No. 480-291-P-001

“Ingenious Prod u cts for Easier Co m m u n i cat i o n .”

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 40

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

2

and Class C remote control frequencies.)

The CB Story

1

FCC Regulations

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.”

FCCWarnings

All transmitter adjustments other than those

3

4

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.

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 oper­ator’s license.

What’s Included with Your 25 WX NW ST

5

1. CB transceiver 6. DC power cord

2. Microphone 7. FCC rules

3. Transceiver bracket 1. (not pictured)

4. Microphone bracket

5. Operating Manual

A1

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 41

Controls and Indicators

1. 4 - Pin Mi c ro p h o n eCo n n e cto r

2. Power On/Off/Volume

3. Squelch

4. DIM/Dynamike

5. Weather Channel Selector

6. Channel Selector

7. LED Channel Display

8 . Sound Tracker™ LED
9 . RX (Receive)/ TX (Transmit)

/WX Weather LED Indicator

10 . Sound Tracker™ On/Off
11 . Channel 19/Channel 9/

Normal Switch

12 . CB/Weather Switch
1 3 . NB/Off Switch
1 4 . CB/ANL PA Switch
1 5 . Signal Strength Meter
1 6 . Microphone

Back Side

1 7 . Public Address Speaker Jack
1 8 . External Speaker Jack
1 9 . Antenna Connector
2 0 . Power Jack

1 5

1

1 1

1 21 3

1 4

2 4 5
3

1 9 2 0

1 6

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.

SoundTracker

TM

“Cuts noise coming in...strengthens signals
going out.”

This Patent pending technology dramatically
improves transmission and reception of CB
signals.

The revolutionary SoundTrackerTMSystem recon­figures the transmission signal which allows it to
be transferred more efficiently through cluttered

9

airwaves.

8

7

1 0

At the same time,it significantly reduces the
amount of static on all incoming CB signals.

The end result is a cleaner, clearer sounding
reception of signals and a more powerful

6

transmission which dramatically improves
CB communications.

Customer Support

1 7 1 8

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.

Cobra Customer Service

Live operators are available
M-F 8:00 am - 8:00 pm CST at:

773.889.3087
Automated Technical Assistance

available 24 hours a day,seven
days a week.E-mail questions
to:
[e-mail]

Cobra on the World Wide Web:
Frequently Asked Questions
(FAQ) can be found on-line at:
www.cobraelec.com

A2

A3