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Cobra 21 LTD ST Operating Instructions Manual

Made by: Cobra
Type: Operating Instructions
Category: Radio
Pages: 11
Size: 0.21 MB

 

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OPERATING INSTRUCTIONS FOR YOUR

40 CHANNEL

CITIZENS BAND 

2-WAY MOBILE RADIO

Model

21 LTD ST

Cobra Electronics Corporation

6500 W. Cortland Street

Chicago, IL 60707

PRINTED IN HONG KONG

©COBRAELECTRONICS CORP. 1997

480-221-P-001

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 1

 


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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 commu-
nications service was opened in 1959. (CB also includes a Class A citizens band
and Class C remote control frequencies.)
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.”

“Cuts Static coming in, adds Punch going out!”

Cobra proudly introduces the first Patent Pending technology that dramatically
improves the transmission and reception of CB radio signals.
This revolutionary system re c o n f i g u res the transmission signal which allows it to
be transferred more effectively through cluttered airwaves. It literally “punches”
your message through the hundreds of thousands of signals that are in the air. A t
the same time, S o u n d Tracker system dynamically adjusts the relationship between
the  signal  and  static  commonly  re f e r red  to  as  noise.  This  allows  Cobra’s
S o u n d Tr a c k e r system to significantly reduce the amount of static on all incoming
CB signals. The system can be further optimized when two SoundTracker CB’s are
used to talk to each other.
The end result is a clearer, cleaner sounding reception of signals and more
powerful transmissions which dramatically improve CB Communications

All transmitter adjustments other than those supplied by the manufacture r
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 operators license.

The CB Story

1

How To Use Your

Citizens Band 

2-Way Mobile Radio

Model 21 LTD ST

Contents

Page

The CB Story ............................................................................................1
SoundTracker System ............................................................................1
Specifications ........................................................................................2,3
Installation

Location..................................................................................................4
Mounting Connections....................................................................4, 5
CB Antenna ..........................................................................................6
Ignition Noise Interference ................................................................7
In House Operation..............................................................................7

Operation

Controls and Indicators ............................................................8, 9, 10
Operating Procedure to Receive ......................................................11
Operating Procedure to Transmit ....................................................12

How SoundTracker Works................................................................13

Maintenance and Adjustment ............................................................14
Appendix

Ten Code..............................................................................................15
A Few Rules That Should Be Obeyed ............................................16
How Your CB Can Serve You ..........................................................16

Warranty Service Instructions ............................................................17
Limited Two Year Warranty ................................................................18
Accessories..................................................................Inside Back Cover

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 3

 


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Specifications (cont.)

GENERAL
Channels

40 

Frequency Range

26.965 to 27.405 MHz.

Frequency Control

Phase Lock Loop (PLL) synthesizer.

Frequency Tolerance

0.005%.

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

5 3/4” W  x 1 3/4” H  x 7 1/2” D .

Weight

1.2 lbs.

Antenna Connector

UHF, SO-239.

Semiconductors

26 transistors, 26 diodes, 4 integrated  circuits.

Meter 

Illuminated; indicates relative power output and
received signal strength.

TRANSMITTER
Power Output

4 watts. 

Modulation

AM (Amplitude Modulation).

Frequency Response

300 to 3000 Hz.

Output Impedance

50 ohms, unbalanced.

RECEIVER
Sensitivity

Less than 1 µV for 10dB (S+N)/N.

Selectivity

6dB @ 7 KHz, 60 dB @ 10 KHz. 

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 Control

Adjustable for optimum signal reception.

Noise Blanker

RF type.

Squelch

Adjustable; threshold less than 1µV.

Audio Output Power

4 watts.

Frequency Response

300 to 3000 Hz.

Distortion

Less than 7% @ 3 watts @ 1000 Hz.

Built-in Speaker

16 ohms, round.

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, when PA-CB switch is in PA, the PA speaker

(Not Supplied)

also monitors the receiver; separate jack provided. 

(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)

3

FREQUENCY RANGE
The COBRA21 LTD ST transceiver represents one of the most advanced AM two-
way radios ever designed for use 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 channels as shown below.

Channel

Channel Frequency

Channel

Channel Frequency

in MHz

in MHz

1

26.965

21

27.215

2

26.975

22

27.225

3

26.985

23

27.255

4

27.005

24

27.235

5

27.015

25

27.245

6

27.025

26

27.265

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

The COBRA21 LTD ST has a vastly superior receiver which includes noise blanker
c i rcuitry  and  an  automatic  noise  limiter.  The  receiver  also  features  increased 
p rotection against cross modulation and strong adjacent channel signals.

To obtain maximum performance please read carefully the descriptions and 
operating instructions in this manual. Fill out below; keep for your records.

Serial No.

Date of Purchase

Dealer Name

Keep this manual for detailed information about your Cobra CB radio.

SAVE YOUR SALES RECEIPT, CARTON AND PACKING FOR POSSIBLE
FUTURE  USE.

2

Specifications

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 5

 


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5

Installation (Cont.)

3.

Connect the antenna cable plug to the standard receptacle on the unit. Most
CB antennas are terminated with a type PL-259 plug which mates with the
receptacle marked "ANT."

4.

Connect the red lead of DC power cord to +13.8 VDC. In automobile instal-
lations, +13.8 VDC is usually obtained from the accessory contact in the fuse
box. This prevents the set being left on accidentally and also permits oper-
ating the unit without the vehicle's engine running.

Before installing the CB radio, visually check the vehicle battery connec-
tions to determine which battery terminal, positive or negative (positive is
the larger of the two) is grounded to the engine block (or chassis).

5.

Connect the black lead to the negative side of the automobile. This is usually
the chassis of the car. Any convenient location with good electrical contact

(remove paint) may be used. Plug power cable into jack on back of transceiver.

In positive ground automobiles the red wire goes to the chassis and the
black wire is connected to the ignition switch.

6.

Mount microphone bracket on right side of the transceiver, or near it using
two screws supplied. When mounting in an automobile, place the bracket
under the dash so the microphone is readily accessible.

Installation

Location

Plan the location of the transceiver and microphone bracket before starting the 
installation. Select a location that is convenient for operation and does not inter-
fere with the driver or passengers in the vehicle. In automobiles, the transceiver
is usually mounted to the underneath of the dash panel, with the microphone
bracket beside it.

Mounting and Connection

The transceiver is held in the universal mounting bracket by two thumbscrews,
permitting adjustment at the most convenient angle.

Auniversal mounting bracket is supplied along with self tapping screws and star
washers. The mounting must be mechanically strong and also provide a good
electrical connection to the chassis of the vehicle. To mount the transceiver:

1.

Determine the most convenient location in your vehicle, hold the COBRA
radio with mounting bracket in the exact location desired. If nothing 
will  interfere  with  mounting  it  in  the  desired  position,  remove  the 
mounting bracket and use it as a template to mark the location for the
mounting screws.

2.

Drill necessary holes and secure mounting bracket in location.

4

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7

Installation (Cont.)

Ignition Noise Interference

Use of a mobile receiver at low signal levels is normally limited by the presence
of electrical noise. The primary source of noise in automobile installations is from

the alternator and ignition system in the vehicle. Under most operating conditions,

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 vehicle engine turned off. The unit requires very little 
current and therefore will not significantly discharge the vehicle battery.

Even though the COBRA21 LTD ST has an automatic noise limiter, in some instal-
lations ignition interference may be high enough to make good communications
impossible. The electrical noise may come from several sources. Many possibili-
ties exist and variations between vehicles require different solutions to reduce the
noise. Consult your COBRAdealer or a 2-way radio technician for help in locat-
ing and correcting the source of severe noise.

Base Station Operation (Operation from 120VAC, House Current)

To operate your transceiver from your home or office, using the regular house
current as the power source, you will require a 12 VDC power pack that has been
specially designed for the purpose. It is available as optional equipment from
your COBRAdealer. It consists of a 120-volt, 60 Hz AC to 12-volt DC power con-
verter that delivers the required power for the operation of the transceiver. Simply
connect the red (+) and black ( - ) leads of the transceiver to the corresponding 
terminals of the power packs.

DO NOT ATTEMPT TO OPERATE THIS TRANSCEIVER BY
CONNECTING DIRECTLY TO 120 VAC.

Temporary Mobile Operation

To operate your COBRA transceiver from a car on a temporary basis, you may
want to purchase an optional cigar lighter adapter from your COBRAdealer. This
adapter and a magnetic mount antenna allow you to quickly "install" your trans-
ceiver for temporary use.

6

CB Antenna

Since the maximum allowable power output of the transmitter is limited by the
FCC, the antenna is one important factor  affecting transmission distance. Only a
properly matched antenna system will allow maximum power transfer from the
50 ohm transmission line to the radiating element. In mobile installations (cars,
trucks, boats, etc.), an antenna system that is non-directional should be used.

A vertically polarized, quarter-wavelength whip antenna provides the most reli-
able operation and greatest range. Shorter, loaded-type whip antennas are more
attractive, compact and adequate for applications where the maximum possible
distance is not required. Also, the loaded whips do not present the problems of
height imposed by a full quarter-wavelength whip.

Mobile whip antennas utilize the metal body of the vehicle as a ground plane.
When mounted at a corner of the vehicle they are slightly directional, in the direc-
tion of the body of the vehicle. For all practical purposes, however, the radiation
pattern is nondirectional. The slight directional characteristic will be observed
only at extreme distances. A standard antenna connector (type SO-239) is provided
on the transceiver for easy connection to a standard PL 259 cable termination.
Cobra loaded type antenna models are highly recommended for most installa-
tions. Consult your Cobra dealer for further details, or call 773-889-3087 and
speak to a Cobra customer representative.

When installed in a boat, the transceiver will not operate at maximum eff i c i e n c y

without a ground plate, unless the vessel has a steel hull. Before installing the trans-
ceiver in a boat, consult your dealer for information re g a rding an adequate gro u n d-
ing system and prevention of electrolysis between fittings in the hull and water.

3-Way Combination Antennas are available which allow operation of all three
bands (AM-FM & CB), using a single antenna. However, use of this type of
antenna usually results in less than normal transmit and receive range when
compared to a standard-type "Single Band" antenna designed for CB only. The
quality of reception of radio signals is highly dependent on the antenna sys-
tem. Call 773-889-3087 for further information.

Installation (Cont.)

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 9

 


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Operation (Cont.)

9

6.

RX/TX LED INDICATOR. When your radio is in the CB receive mode,
the LED will be green. When in transmit mode, the LED will be red.

7.

LED CHANNEL DISPLAY. The selected channel will be displayed. 

8

.

CB-PA SWITCH: Selects the mode of operation. In the CB position, the
PA function is disabled and the unit will transmit and receive on the
selected frequency. The PA function should not be used unless a PA speaker is
connected. 
NOTE: ANL (Automatic Noise Limiter) is a non-switchable
feature that is always on to reduce background noise.

9.

S-METER. Swings proportionally to the strength of the incoming signal
during re c e i v i n g .

RF-METER.  Swings  proportionally  to  the  RF  output  power  while 
transmitting.

10.

SOUNDTRACKER™ INDICATOR. Ared LED will illuminate when the
SoundTracker system is engaged on your CB.

11.

SOUNDTRACKER™ SWITCH. Depressing this button turns on the
SoundTracker system in your CB.

Controls and Indicators

Refer to controls, indicators and connectors as illustrated below:

A. Front Panel

1.

MICROPHONE CONNECTOR. Front panel microphone connector.

2.

OFF/ON/VOLUME. Turn clockwise to turn power on and set the desired
listening volume.

3.

SQUELCH. This control is used to cut off or eliminate receiver back-
ground noise in the absence of an incoming signal. For maximum receiver
sensitivity it is desired that the control be adjusted only to the point
where the receiver background noise or ambient background noise is
eliminated. Adjust until the receiver noise disappears. This will require
the incoming signal to be slightly stronger than the average receiver
noise. Further clockwise rotation will increase the threshold level which
a signal must overcome in order to be heard. Only strong signals will be
heard at a maximum clockwise setting.

4.

RF GAIN. Adjust as required to optimize signal. This control is used 
primarily to optimize reception in strong signal areas. Gain is reduced by
counterclockwise rotation of the control. 

5

.

CHANNEL SELECTOR SWITCH. This switch selects any one of forty
Citizens Band channels desired. The selected channel is indicated by the
LED readout, directly above the channel selector knob.

Operation

8

11

7

1

2

3

4

5

9

6

10

8

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 11

 


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11

Operating Procedure to Receive

1.

Be sure that the power cord, antenna and microphone  are connected to the
proper connectors before proceeding further. The PA/CB  should be in the
CB position.

2.

Turn the radio ON by rotating the VOLUME CONTROL clockwise.

3.

Set the RF GAIN CONTROLfully clockwise.

4.

Set DELTA-TUNE CONTROL to center(click-stop) position.

5.

Rotate SQUELCH CONTROL c o u n t e rclockwise until incoming signal is heard .

6.

Set the CHANNEL SELECTOR Switch to the desired channel.

7.

Set VOLUME CONTROL to a comfortable listening level.

8.

Engage the SoundTracker system by depressing the button labeled ST.

Listen to the background noise from the speaker. Turn the SQUELCH CON-
TROL slowly clockwise until the noise JUST disappears (no signal should be
present). Leave the control at this setting. The squelch is now properly adjust-
ed. The receiver will remain quiet until a signal is actually received. Do not

advance the control too far, or some of the weaker signals will not be heard.
The revolutionary SoundTracker system allows you to reduce unwanted
background noise (static) and increase the signal for better reception.

1

2

3

4

B. Press-To-Talk Microphone

Both the receiver and transmitter are controlled by the Press-to-Talk switch on the
microphone. Press the switch and the transmitter is activated; release the switch
to receive. When transmitting, hold the microphone two inches from the mouth
and speak clearly in a normal voice. The microphone provided with your radio is
a detachable low-impedance dynamic type.

Operation (Cont.)

Operation (Cont.)

10

C. Rear Panel

1.

PUBLIC ADDRESS: An external 8-ohm 4.0 watt PA speaker may be con-
nected to the PA Speaker Jack when this unit is used as a public address
system. The speaker should be directed away from the microphone to
prevent acoustic feed-back. Physical separation or isolation of the micro-
phone and speaker must be employed when operating the PA at high 
output levels.

2.

EXTERNAL SPEAKER: The External Speaker Jack is used for remote
receiver monitoring. 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.

3.

ANTENNA CONNECTOR: This SO-239 connector permits connection
of the transmission line cable PL-259 connector to the transceiver.

4.

POWER.  This jack permits connection of the DC power to the transceiver.
A power cord with polarized plug is supplied with the radio. The polar-
ized plug ensures that the power will always be connected properly.

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 13

 


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13

12

Operation (Cont.)

Operating Procedure to Transmit

1.

Be sure the operator has read and understands part 95, F.C.C. Rules and
Regulations prior to operating the transmitter.

2.

Select the desired channel.

3.

Set the DYNAMIKE control fully clockwise.

4.

The receiver and transmitter are controlled by the press-to-talk switch on the

microphone. Press the switch and the transmitter is activated; release switch
to receive. When transmitting (on a clear channel), hold the microphone two
inches from the mouth and speak clearly in a normal voice.

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.

Operating Procedure for Public Address

1.

Connect a PA speaker to the PA jack provided on the rear panel.

2.

Place PA/CB/ANLswitch into the PA position.

3.

Depress push-to-talk switch on mic—speak in normal voice.

4.

Adjust PA speaker volume with front panel DYNAMIKE control.

When the Volume control is rotated clockwise, activity on the CB channel will
be heard through the PA speaker.

SOUNDTRACKER SYSTEM

While previous systems only “blanked out” or limited noise in higher sound
frequencies, the revolutionary new SoundTracker System actually reduces noise
while leaving the signal intact in the reception mode. In the transmission mode,
it actually strengthens the signal, providing you with a significant reduction in
noise on reception and transmission.

Sound clarity is measured by the ratio of the signal level to the noise

level. The higher the signal-to-noise ratio, the better the sound.

HOW SOUNDTRACKER WORKS

On Reception–

“Cuts Noise Coming In”

With a normal CB, distant signals fall below the squelch level and are unintelli-
gible. With a SoundTracker CB, the noise level is cut by 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 Tr a n s m i s s i o n –

“ S t rengthens Signals Going Out”

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.

How SoundTracker Works

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 15

 


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14

15

The COBRA CB transceiver is specifically designed for the environment encoun-
tered in mobile installations. The use of all solid state circuitry and its light weight
result in high reliability. Should a failure occur, however, review the following,
then if necessary, replace parts only with identical parts. Do not substitute. Refer
to the schematic diagram and parts. 

1.

Check connections to the source of power and make sure it is the 13.8 VDC
required to operate your radio.

2.

Check the fuse in the DC power cord. The main power lead (red wire) has a
2 Amp 3AG type fuse in its holder. Use only the above specified type and
size fuse for maximum protection. Failure to do so, will void the warranty.

3.

Make certain the microphone is properly plugged in.

4.

Make certain the antenna is properly connected and tuned for minimum
SWR. NOTE: COBRA antennas include full instructions as to how to tune
your antenna. If you're still in doubt about the procedure, contact the
COBRA dealer from whom you purchased your radio and antenna, for
advice. If you hired an installer to install your radio and antenna, contact the
installer.

If you are unable to correct the problem, refer the WARRANTY SERVICE
INSTRUCTIONS at the end of this manual for the correct procedure for warranty
and post-warranty service from COBRA.

Adjustment Warning

Replacement or substitution of certain parts with replacements other than those
recommended by COBRA, may be a violation of the technical regulations of Part
95 of the FCC Rules, or of Type Acceptance requirements of Part 2 of said rules.

When making adjustments other than transmitter adjustments, be sure to re-read
applicable portions of this instruction manual to make certain you are following
correct procedure and that the radio was properly installed, etc.

For technical assistance, please call our Automated Help Desk 

which can assist you by answering the most 

frequently asked questions about Cobra products.

(773) 889-3087

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

Question (FAQ) section at www.cobraelec.com or by e-mail 

to productinfo@cobraelec.com

Maintenance and Adjustment

Appendix

Citizens Band radio operators have largely adopted the “10-code” for standard
questions and answers. Its use permits faster communications and better under-
standing in noisy areas. The following table lists some of the more common codes
and their meanings:

Code

Meaning

Code

Meaning

10-1

Receiving poorly

10-35

Confidential information

10-2

Receiving well

10-36

Correct time is

10-3

Stop transmitting

10-37

Wrecker needed at

10-4

OK, message received

10-38

Ambulance needed at

10-5

Relay message

10-39

Your message delivered

10-6

Busy, stand by

10-41

Please turn to channel

10-7

Out of service, leaving air

10-42

Traffic accident at

10-8

In service, subject to call

10-43

Traffic Tie up at

10-9

Repeat message

10-44

I have a message for you

10-10

Transmission completed,

10-45

All units within range 

standing by

please report

10-11

Talking too rapidly

10-50

Break channel

10-12

Visitors present

10-60

What is next message number?

10-13

Advise Weather/Road

10-62

Unable to copy, use phone

conditions

10-63

Net directed to

10-16

Make pick up at

10-64

Net clear

10-17

Urgent business

10-65

Awaiting your next 

10-18

Anything for us?

message/assignment

10-19

Nothing for you, return

10-67

All units copy

to base

10-70

Fire at

10-20

My location is

10-71

Proceed with transmission

10-21

Call by telephone

in sequence

10-22

Report in person to

10-77

Negative contact

10-23

Stand by

10-81

Reserve hotel room for

10-24

Completed last assignment

10-82

Reserve room for

10-25

Can you contact

10-84

My telephone number is

10-26

Disregard last information

10-85

My address is

10-27

I am moving to channel

10-91

Talk closer to mike

10-28

Identify your station

10-93

Check my frequency on 

10-29

Time is up for contact

this channel

10-30

Does not conform to FCC rules

10-94

Please give me a long count

10-32

I will give you a radio check

10-99

Mission completed, all 

10-33

EMERGENCY TRAFFIC

units secure

10-34

Trouble at this station

10-200 Police needed at

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 17

 


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Appendix (Cont.)

A Few Rules That Should Be Obeyed

1.

You are not allowed to carry on a conversation with another station for more
than five minutes at a time without taking a one-minute break to give others
a chance to use the channel.

2.

You are not allowed to blast others off the air by overpowering them with
illegally amplified transmitter power or illegally high antennas.

3.

You can’t use the CB to promote illegal activities.

4.

You are not allowed to use profanity.

5.

You may not play music in your CB.

6.

You may not use your CB to sell merchandise or professional service.

How Your CB Can Serve You

• Warn of traffic tie ups ahead.

• Provide weather and road information.

• Provide help fast in event of emergency or breakdown.

• Suggest good spots to eat and sleep.

• Make long trips more interesting, and help keep you awake.

• Provide direct contact with your office or home.

• Make friends for you as you travel.

• Provide “local information” to find you destination.

• Help law enforcement officers by reporting drunk and reckless drivers.

17

16

If You Think You Need Service 

For technical assistance, please call our Automated Help Desk 

which can assist you by answering the most 

frequently asked questions about Cobra products.

(773) 889-3087

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

Question (FAQ) section at www.cobraelec.com or by e-mail 

to productinfo@cobraelec.com

If You Think You Need Service, Call 773-889-3087

“If your product should require factory service please call Cobra

first before sending your unit in. This will ensure the fastest

turnaround 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. Must include CB unit and microphone. 

3 .

Enclose a description of what is happening with the unit. Include a typed or
clearly printed name and address of where the unit is to be re t u r n e d .

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 (to avoid loss in
transit) such as United Parcel Service (UPS), Roadway Parcel Service (RPS)
or First Class Insured Mail 
to Cobra Factory Service, Cobra Electronics
Corporation, 6500 W. Cortland St., Chicago, IL60707. Cobra is not respon-
sible for units not received if package has not been properly insured.

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 auto-
matically be sent informing you of the repair charge or replacement charge. If
you have any questions, please call 773-889-3087 for assistance.

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 19

 


background image

Please print clearly:

Name

__________________________________________________________________

Address (Not P. O. Box) ____________________________________________________

City ________________________________State____________Zip ________________

Telephone No. ( ____________)

____________________________________________

Credit Card No.______________________________________Exp.Date ____________

Customer Signature __________________________________________

Circle One:

Visa

MasterCard

Discover

Warranty and Service

18

19

Limited Two Year Warranty

COBRAELECTRONICS CORPORATION warrants that its COBRAcitizens band
(CB) radio, and the component parts thereof, will be free of defects in workman-
ship and materials for period of two (2) year from the date of first consumer pur-
chase. This warranty may be enforced by the first consumer purchaser, provided
that the product is utilized within the U.S.A.

C O B R A will, without charge, repair or replace, at its option, defective citizens band
(CB) 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 re c e i p t .

You must pay any initial shipping charges re q u i red to ship the product for war-
ranty service. The return charges will be at Cobra’s expense, if the product is
re p a i red or replaced under warranty. For further details concerning pro c e d u res for
obtaining service, see the “If You Need Service” section of the Owner’s Manual.

E x c l u s i o n s: 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  altere d ,
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.

C O B R A shall not be liable for any incidental, consequential or other damages; 
including,  without  limitation,  damages  resulting  from  loss  of  use  or  cost  of 
i n s t a l l a t i o n .

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.

This limited warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.

Cobra Electronics Corporation, 

6500 W. Cortland Street,  Chicago, IL60707

DYNAMIC MICROPHONE 
Replacement microphone with 4-pin screw-on connector

CA-73

$14.95

DC POWER CORD
Exact replacement

420-002-N-001

$7.00

MOUNTING BRACKET
Exact replacement 

250-004-N-001

$4.50

MOUNTING BRACKET SCREWS
Exact replacements

634-088-9-001

$.60 ea

POWER MICROPHONE
Amplified power mic

CA-75

$19.95

POWER/NOISE-CANCELLING MICROPHONE
Amplified power mic with noise-cancelling design

CA-77

$39.95

POWER/ECHO MICROPHONE
Amplified power mic with echo circuitr y

CA-79

$69.95

ATW-400
High performance magnetic mount antenna

ATW-400

$39.95

Description

Part No. 

Cost Ea. 

X  Qty.

=

Amount

Make check or money order (no stamps) payable to Cobra Electronics and mail with this order form to:

Cobra Accessories Dept.

6500 W. Cortland St.,Chicago,IL 60707

Call 773-889-3087,or fax 773-622-2269 for credit card orders

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

OPTIONAL ACCESSORIES
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) 8a.m.-8p.m. M-F CST.
Order by mail or fax: Please fill out order form belo w, and mail/fax directly to Cobra.

Mail to:

Cobra Accessories Dept.

6500 W. Cortland St., Chicago, IL 60707

Fax to: 

1-773-622-2269

★★

Illinois residents add 7%

★★

Cook Co. residents add .75% (7.75% total)

★★

Chicago residents add 1% (8.75% total)

★★

Indiana residents add 5%

★★

Michigan residents add 4 %

★★

Ohio residents add 6%

★★

Wisconsin residents add 5%

Amount

(Tax if applicable )  

Shipping//handling         $3.75

Total 

(Prices subject to change without notice)

21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 21