Page 1
26
Accessory Order Form
Tax Table
Ohio,Wisconsin residents add 5%
Indiana,Michigan residents add 6 %
Illinois residents add 8.75%
California residents add 7.25%
Please print clearly
Name___________________________________________________
Address (No P.O. Box)_____________________________________
City____________________________________Stat e____________
Zip_____________Telephone (____)__________________________
Credit Card No._________________________Exp. D ate _________
Customer Signature__________________________________
Circle One: Visa MasterCard Discover
Subtotal
(Tax if applicable)
Shipping/handling
Total
Shipping & Handling*
Amount of Shipping/
Order Handling
$10.00 or less $3.00
$10.01-$25.00 $5.50
$25.01-$50.00 $7.50
$50.01-$90.00 $10.50
$90.01-$130.00 $13.50
$130.01-$200.00 $16.50
$200.01 plus 10% of purchase
*For AK,HI and PR add additional
$26.95 for FedEx Next Day or
$10.95 for FedEx 2nd Day.Excludes
weekend and holiday shipments.
Please allow 2-3 weeks for
delivery in the U.S.Prices subject
to change without notice.
Item # Description Cost Ea. Qty. Amount
251-199-9-001 Replacement
Mounting Bracket
634-081-9-001 Replacement
Thumb Screws
741-080-9-001 Replacement
Microphone Bracket
HG M84 4 Pin Premium Noise-
Cancelling Microphone
HG M84W 4 Pin Premium Noise-
Cancelling Microphone
Wood Grain
HG M85 5 Pin Premium Noise-
Cancelling Microphone
HG M73 Replacement
Dynamic Microphone
HG M75 4 Pin Power Microphone
HG M77 Noise Canceling
Microphone
HG S100 Dynamic External Speaker
HG S300 Noise Canceling
External Speaker
HG S500 Noise Canceling With
Talk Back External Speaker
The Cobra® line of
quality products also
includes:
•CB Radios
• microTALK® Radios
•Radar/Laser Detectors
•Safety Alert®
Traffic Warning Systems
•Accessories
• GPS (Global Positioning
System)
• HighGear™ Accessories
•Power Inverters
•VHF Marine Radios
1. CB Transceiver
2. Microphone
3. Transceiver Bracket
4. Microphone Bracket
5. Operating Manual
(not pictured)
6. FCC Rules
(not pictured)
7. Illuminated Antenna
CB Tranceiver
A1
The Citizens Band Story
FCC Information
4
7
2
1
3
Nothing Comes Close To A Cobra®
20 XTR
Street Communicator
Operating Instructions for your
20 XTR
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.)
FCC Regulations
FCC regulations permit only "transmissions" (one-party
to another) rather than" broadcast" (to a wide audience).
Thus,advertising is not allowed on CB channels because
that is "broadcasting".
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.
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 CB Radio:
©2003 Cobra Electronics Corporation
Printed in China
Part No.480-079-P
Cobra Electronics Corporation
6500 West Cortland Street
Chicago,IL 60707 USA
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 1
Page 2
25
Optional
Accessories
You can find accessories at
your local Cobra® dealer,or in
the U.S.A.you can order
directly from Cobra®.
Ordering From U.S.A.
Call 773-889-3087 for pricing
or visit www.cobra.com.
For credit card orders
Complete and mail this order
form to:
Cobra® Electronics
Attn: Accessories Department
6500 West Cortland Street
Chicago,IL 60707 USA.
Or fax the completed form to
us at 773-622-2269.
You may also order by phone
by calling 773-889-3087 (press
1 from the main menu) 8:00
a.m.to 6:00 p.m. CT,Monday
through Friday.
To order online
please visit our website:
www.cobra.com
Accessories
Dynamic External Speaker
HG S100
Noise Canceling External
Speaker
HG S300
Noise Canceling With Talk
Back External Speaker
HG S500
PA
ANT
13.8V DC
EXT
A2
Controls and Indicators
Thank you for purchasing the Cobra 20 XTR Radio
Transceiver.Properly used, this Cobra product will give
you many years of reliable service.
Customer Assistance
In this user’s manual,you should find all the
information you need to operate your radio.If you
require further assistance after reading this manual,
Cobra® Electronics offers the following customer
assistance services:
For Assistance In the U.S.A.
Automated Help Desk
English only.24 hours a day, 7 days a week
773-889-3087 (phone).
Customer Assistance Operators
English and Spanish. 8:00 a.m.to 6:00 p.m. CT,
Monday through Friday (except holidays)
773-889-3087 (phone).
Questions
English and Spanish. Faxes can be received
at 773-622-2269 (fax).
Technical Assistance
English only.www.cobra.com
(on-line:Frequently Asked Questions).
English and Spanish. productinfo@cobra.com (e-mail).
For Assistance Outside the U.S.A.
Contact Your Local Dealer
A3
1
7 6
Our Thanks to You
Customer Assistance
5
10
Front Side
1. Microphone Connector.
2. Off/On/Volume.
3. Squelch.
4. Channel 9/NOR
5. CB/PA
6. Channel Selector
Button.
7. LED Channel Display.
8. S/RF Power Meter.
9. TX Indicator LED.
10. Microphone
Back Side
11. Antenna Connector
12. Public Address
13. Power Cord
14. External Speaker
Connector
4
8
11
13
14
12
2 3
9
Customer
Assistance
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 4
Page 3
1
Contents
The CB Story . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A1
FCC Information/Included Accessories . . . . . . . . . . . . . .A1
Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A2
Customer Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Installation/Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Mounting/Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
CB Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Turning on Your Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Microphone Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Channel Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Channel 9/NOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
CB/PA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
S/RF Power Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
TX Indicator LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Real Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Ignition Noise Interference . . . . . . . . . . . . . . . . . . . . . . . . . .13
Temporary Mobile Operation . . . . . . . . . . . . . . . . . . . . . . .13
Operation to Receive/Transmit . . . . . . . . . . . . . . . . . . . . . .14
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Replacement Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Rules You Should Know . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Channel 9 Emergency Messages . . . . . . . . . . . . . . . . . . . .16
CB Distress Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
CB 10-Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Frequency Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Warran ty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Product Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Order Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Features of This Product
•Antenna Included
•Antenna Illuminates
When PTT Is Pressed
• 40 CB Radio Channels
• Instant Channel 9/NOR
•PA System
•Compact Size
•Dynamic Microphone
•9 Foot Mic Cord
•Front Panel Microphone
Connector
Table of Contents
Features
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 1
Page 4
Connect the red lead of DC power cord to an
accessory 12 volt fuse.
Connect the black lead to the negative side of the
automobile.This is usually the chassis. Any convenient location with good electrical contact (remove
paint) may be used.
Mount the 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.
Attach the 4-pin microphone cable to receptacle
on front of unit and install unit in bracket securely.
Mounting and Connections
Select a location for the transceiver and microphone
bracket that is convenient for operation.In
automobiles,the transceiver is usually mounted to the
underneath of the dash panel, with the microphone
bracket beside it.
Hold the radio with mounting bracket in the exact
location desired.Remove the mounting bracket
and use it as a template to mark the location for
the mounting screws.
Drill necessary holes and secure mounting bracket
in location.
Connect the antenna cable plug to the receptacle
marked “ANT”on the back of the unit.
CB Tranceiver
EXT
ANT
13.8V DC
PA
3
Mounting and
Connections
Note
Before installing the CB radio,
visually check the vehicle
battery connections to
determine which battery
terminal,positive or negative
(positive is the larger of the
two) is grounded to the engine
block (or chassis).
2
Mounting and
Connections
Note
The transceiver is held in the
universal mounting bracket by
two thumb screws,permitting
adjustment at the most
convenient angle.
A universal mounting bracket
is supplied along with self
tapping screws and star
washers.
OperationInstallation Installation
CB Transceiver
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 2
Page 5
Installation Instructions
This magnetic mount antenna has
been tested to withstand normal
high speed driving.The magnet
will hold securely under the
following conditions.Always make
sure the antenna base is on a clean, flat,painted or
unpainted surface.The magnetic base will not hold
on non-metallic or aluminum surfaces. Periodically
clean all parts of antenna to maintain maximum
performance.
Clean dust and dirt away from area where antenna
will be placed.
Place antenna on vehicle, roof,trunk lid, or any flat
surface. For best results centrally locate.
Run coax cable thru to inside of vehicle routed in a
manner where it will not interfere with the driver or
controls and connect to the antenna connector of
the radio.
5
Warning
Warning: This product is intended for off road use.
Please check the laws and regulations in your state,
county and/or municipality regarding installation and
use of this product.
The manufacturer makes no claims as to the edequacy
of use and assumes no liability for any improper use or
installation. Installation and use are solely the
responsibility of the purchaser.
Installation
4
Installation
CB Antenna
Installation
Note
Mobile installations (cars,
trucks,boats, etc) should
be made only with a
non-directional antenna
system.
A standard antenna connector
(Type SO-239) is provided on
the Connector Box for easy
connection to a standard
PL-259 cable termination.
CB Antenna
Do not remove foil covering from bottom of
magnetic base.The foil protects the car finish.
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 4
Page 6
7
Squelch
This control is used to cut off or eliminate receiver
background noise in the absence of an incoming
signal. Adjust until the receiver noise disappears.This
will require the incoming signal to be slightly stronger
than 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.
Squelch
Operation
6
Turning on
Turn volume control clockwise to turn power on and
set the desired listening volume.
Microphone Connector
Allows for convenient removal of the microphone plug
when storage is required.The microphone MUST be
connected to the unit at all times when in use,for
proper operation.
Turning on
Your Radio
Operation
SHIELD
AUDIO
RX
TX
1
2
3
4
Microphone
Connector
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 6
Page 7
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
GATE CLOSED
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
GATE
OPEN
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
GATE
9
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.
Operation
8
Operation
Gate open
Gate set to Desired
Squelch Setting (DSS)
Gate closed
Setting
Squelch
Setting Squelch
Squelch is the “control gate”for incoming signals.
Full clockwise rotation closes the gate
allowing only very strong signals to enter.
Full counterclockwise rotation opens the “gate”
allowing all signals in.
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 8
Page 8
11
S/RF Power Meter
Shows relative transmitter RF output power and input
signal strength when receiving.The LED (Light
Emitting Diode) segments glow green to amber to
red...this indicates receive or transmit activity.
TX Indicator LED
The indicator will light red when in the transmit mode.
Operation
S/RF
PowerMeter
TX Indicator
LED
Channel
Selection
10
Selecting a Channel
Rotate channel knob clockwise until desired channel is
displayed.
Channel 9/NOR
Set CH 9 to obtain instant access emergency channel.
In NOR position, all 40 CB channels are selected by the
channel button.
CB/PA
In the CB position, the PA function is disabled and the
unit will transmit and receive on the selected channel.
The PAfunction should not be used unless a PA
speaker is connected.
Operation
Channel
9/NOR
CB/PA
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 10
Page 9
13
Ignition Noise Interference
Use of a mobile receiver at low signal levels is
normally limited by the presence of electrical noise.
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 this radio has an automatic noise limiter,
in some installations ignition interference may be
high enough to make good communications
impossible.Consult your COBRA dealer or a 2-way
radio technician for help in locating and correcting
the source of severe noise.
Temporary Mobile Operation
For temporary mobile operation,you may want to
purchase an additional cigarette lighter adapter from
your COBRA dealer.This adapter and a magnetic
mount antenna allow you to quickly "install" your
transceiver for temporary use.
Operation
Ignition Noise
Interference
Note
When using the unit with
cigarette adapter,turn off
when not in use to avoid
draining the battery.
Temporary
Mobile
Operation
Note
Red wire is connected to
positive side of socket center
tip.Black wire is connected to
negative side contacts.
Note
Radio resets to CH 9 when
connected to cigarette
lighter plug.
EXT
ANT
13.8V DC
PA
12
Rear Panel
Antenna Connector
This female connector permits connection of the
transmission line cable male connector to the
transceiver.
External Speaker
The External Speaker Jack is used for an external
speaker.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.
Power
These wires supply power to the CB radio.This cable is
permanently attached to the radio.If you wish to
remove the radio after installation,disconnect at fuse
holder and ground connector.
Public Address
An external PA speaker may be connected to the PA
speaker jack when 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 microphone and speaker
must be employed when operating the PA at high
output levels.
Rear Panel
Antenna Connector
External Speaker
Power
Public Address
Operation
Note
Cobra external speakers are
rated 15 watts
EXT
ANT
13.8V DC
PA
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 12
Page 10
15
Maintenance/
Adjustment
Maintenance
Maintenance and Adjustment
Your COBRA CB transceiver is specifically designed for
the environment encountered 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.
Check connections to the source of power and
make sure it is the 13.8 VDC required to operate
your radio.
Check the fuses in the DC power cord. The main
power lead (red ) 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.
Make certain the microphone is properly
plugged in.
Make cer tain the antenna is properly assembled
and connected.
If you are unable to correct the problem,refer to the
SERVICE INSTRUCTIONS at the end of this manual for
the correct procedure for warranty and post-warranty
service from COBRA.
14
Operating Procedure to Receive
Be sure that power cord, antenna and microphone
are connected to the proper connectors before
proceeding further.The CB/PA switch should be in
the "CB" position.
Tu rn the radio ON by rotating the VOLUME
CONTROL clockwise.
Rotate SQUELCH CONTROL counterclockwise until
incoming signal
is heard.
Select the desired channel.
Set VOLUME CONTROL to a comfortable listening
level.
Operating Procedure to Transmit
Select the desired channel.
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.
Operation
Operating
Procedure
to Receive
Operating
Procedure
to Transmit
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 14
Page 11
CB Distress
Data
17
CB Distress Data
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 CLIP repeatedly so any monitor can assist.
The FCC gives the following examples of permitted
and prohibited types of communications for use on
Channel 9.These are guidelines and are not intended
to be all-inclusive.
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.”
Wa rning & Rules
16
A Few Rules
You Should
Know
Replacement 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, 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.
A Few Rules That Should Be Obeyed
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.
You are not allowed to blast others off the air by
overpowering them with illegally amplified
transmitter power or illegally high antennas.
You can't use CB to promote illegal activities.
You are not allowed to use profanity.
You may not play music in your CB.
You may not use your CB to sell merchandise or
professional service.
Set to channel 9 for emergencies
Be sure antenna is properly connected.
Replacement
Wa rning
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 16
Page 12
19
10-28 Identify your station
10-29 Time is up for contact
10-30 Does not conform to FCC rules
10-33 Emergency traffic
10-34 Trouble at this station
10-35 Confidential information
10-36 Correct time is
10-37 Wrecker needed at
10-38 Ambulance needed
10-39 Message delivered
10-41 Turn to channel
10-42 Traffic accident at
10-43 Traffic tie up at
10-44 Have a message for
10-45 All units within range please report
10-50 Break channel
10-60 What is next message number?
10-62 Unable to copy. Use phone
10-63 Net directed to
10-64 Net clear
10-65 Awaiting your next message/assignment
10-67 All units comply
10-70 Fire at
10-71 Proceed, transmission in sequence
10-77 Negative contact
10-81 Reserve hotel room for
10-82 Reserve room for
10-85 My address is
10-91 Talk closer to mic
10-93 Check my frequency on this channel
10-94 Give me a long count
10-99 Mission completed, all units secure
10-200 Police needed at
CB 10-Codes
18
CB 10-Codes
Citizen Bands have adopted the “10-CODES”for
standard questions and answers. These codes provide
quick and easy communication, especially in noisy
areas. Following are some of the more common codes
and meanings:
Code 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
CB 10-Codes
CB 10-Codes
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 18
Page 13
21
Specifications
GENERAL
CHANNELS . . . . . . . . . . . . . . . . . . . . . . . CB - 40 CH
FREQUENCY RANGE. . . . . . . . . . . . . . . CB - 26.965 TO 27.405 MHZ
FREQUENCY TOLERANCE. . . . . . . . . . 0.005 %
FREQUENCY CONTROL . . . . . . . . . . . PLL (PHASE LOCK LOOP) SYNTHESIZER
OPERATING TEMP.RANGE . . . . . . . . . -30°C TO + 65° C
MICROPHONE . . . . . . . . . . . . . . . . . . . . PLUG-IN DYNAMIC
INPUT VOLTAGE . . . . . . . . . . . . . . . . . . 13.8VDC nom. (negative ground)
CURRENT DRAIN. . . . . . . . . . . . . . . . . . TRANSMIT: AM FULL MOD., 1.4A (MAXIMUM)
RECEIVE:SQUELCHED, 0.9 A;
FULL AUDIO OUTPUT,1.2A (NOMINAL)
SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7/8”D X 6-3/4”W X 1-7/8” H
WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . 3.25 LBS.
ANTENNA CONNECTOR . . . . . . . . . . . UHF;SO-239
METER. . . . . . . . . . . . . . . . . . . . . . . . . . . . LED; 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)
SELECTIVITY . . . . . . . . . . . . . . . . . . . . . . 6 dB @ 7 KHZ, 60 DB @ 10KHZ
IMAGE REJECTION . . . . . . . . . . . . . . . . 60 dB, TYPICAL
ADJACENT-CHANNEL REJECTION. . 50 dB,TYPICAL
AUTOMATIC NOISE LIMITER . . . . . . . BUILT-IN
Specifications
20
Frequency
Ranges
Frequency Ranges
Frequency Ranges
The Cobra 20 XTR transceiver represents one of the
most advanced AM two-way radios used as a Class D
station in the Citizens Radio Service.This unit features
advanced Phase Lock Loop (PLL) circuitry providing
complete coverage of all 40 CB channels.
Channel Channel
CB Frequency CB Frequency
Channel In MHz Channel 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
Specifications
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23
Product Service
If you think you need service call 773.889.3087
If your product should require factory service please call
Cobra first before sending in your unit.This will ensure the
fastest turn-around time on your repair.
You may be asked to send your unit to the Cobra
factory.I t will be necessary to furnish the following in
order to have the product serviced and returned.
For Warranty Repair include some form of
proof-of-purchase,such as a mechanical
reproduction or carbon of a sales receipt. If you
send the original receipt it cannot be returned.
Send the entire product.
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.
Pack unit securely to prevent damage in transit. If
possible,use the original pack ing material.
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 West
Cortland Street, Chicago,IL 60707 USA.
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
773.889.3087 for assistance.
Product
Service
For technical assistance,
please call our Automated
Help Desk at (773) 889-3087
24 hours a day,7 days a week.
This can assist you by
answering the most frequently
asked questions about Cobra
products.
A Consumer Service
Representative can be
reached at (773) 889-3087
8:00 am - 6:00 pm,
Monday through Friday,CT.
Technical assistanceis also
available on-line in the
Frequently Asked Questions
(FAQ) section at
www.cobra.com
or by e-mail to
productinfo@cobra.com
Product Service
22
Limited One Year Warranty
COBRA ELECTRONICS CORPORATION warrants that its
COBRA CB Transceiver, and the component parts thereof,will
be free of defects in material and workmanship for a period
of one (1) year from the date of 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,a
defective CB Transceiver upon delivery to the COBRA factory
Service Department, accompanied by proof of the date of
first consumer purchase,such a duplicated sales receipt.
You must pay 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.
This warranty gives you specific legal rights,and you may
also have other rights which vary from state to state.
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 installation.
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.
Cobra Electronics
Corporation
6500 West Cortland Street
Chicago,Illinois 60707 USA
Limited One Year Warranty
1
Y
e
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r
W
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y
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 22
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24
Accessories
Replacement Mounting
Bracket
251-199-9-001
Replacement Thumb Screws
634-081-9-001
Replacement Microphone
Bracket
741-080-9-001
4 Pin Power Microphone
HG M75
4 Pin Noise Canceling
Microphone
HG M77
4 Pin Replacement
Dynamic Microphone
HG M73
4 Pin Premium NoiseCancelling Microphone
HG M84
4 Pin Premium NoiseCancelling Microphone
Wood Grain
HG M84W
5 Pin Premium NoiseCancelling Microphone
HG M85
20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 24
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