Cobra 75 WX ST User manual

Operating instructions for your
Cobra®
75WXST
COMPACT REMOTE MOUNT
CB RADIO WITH SOUNDTRACKER
S~u N o - 1- ~EK;E R J:>
~ SYSTEM
"Cuts Noise Coming In... Strengthens Signals Going Out"

How to use your
!,cobra® 75VVXST
CITIZENS BAND RADIO
WITH SOUNDTRACKER®
CONTENTS:
Introduction .........................................3
Operation (continued)
Features ............................................3
One Touch Channel 9 & 19 ............ 18
Technical Support and service ......... 3
Key Lock ......................................... 18
Controls and Indicators .................4/5
Frequency Display .......................... 19
Included with your 75WX ...................6 All
Channel Scan ............................ 20
Installation ........................................... 7
Weather Channel ........................... 21
Connector Box Location .................. 7
Channel Saver ................................ 21
Mounting Connector Box .................8
Memory Channels .......................... 22
Microphone Hanger. ........................9
Dual Watch .................................... 23
Antenna ......................................... 10
How your CB can serve you .............. 24
Speakers ......................................... 11
A few rules you should know ......... 24
Noise Interference .......................... 11
Weather Channel Messages ............ 25
SoundTracker® System .................... 11
Channel 9 Emergency Messages .... 26
Operation .......................................... 12
CB 10 Codes ................................... 27
Turning your CB On ....................... 12
Frequency Ranges ..............................28
Activating SoundTracker. ................ 12
S 0f0
t· 29
pec1 1ca ions .....................................
Testing SoundTracker ..................... 13
FCC Statement ...................................30
Setting the Squelch ......................... 14
Antenna Safety ................................... 31
Selecting a Channel ........................ 15
LCD Readout.. ................................ 16
Transmit/ Receive .......................... 17
Troubleshooting ................................. 31
Warranty Information ........................ 32
Optional Accessories .........................33

3
INTRODUCTION
The Cobra 75WXST is the ultimate in handheld CB receivers, specifically
designed with SoundTracker®, which practically eliminates annoying
static to deliver crisp, clear sound quality. The compact, state-of-the-
art design provides consistent, outstanding performance in almost all
conditions or situations. For ultimate satisfaction and performance from
your Cobra 75WXST, please review these operating instructions fully,
prior to use.
FEATURES
• SoundTracker System
• 40 CB Radio Channels
• 10 Weather Channels
• One-touch Emergency Channel 9 and Information Channel 19
• Remote Mount Installation System
• Full Featured LCD Display Panel
• Squelch Control
• Key Lock
• Channel Saver Circuitry
• Dual Watch Channel Monitor
• Full Channel Scan
• Four Memory Locations
• 1 0-Foot Flexible Cord
• Quick Disconnect
For technical assistance, please call our Automated Help Desk
which can assist you by answering the most frequently asked
questions about Cobra products.
[phone]
24 hours a day, 7 days a week.
A consumer Service Representative can be
reached through this number
8:00 am -5:30 pm, Monday through Friday, Central Time.

INTRODUCTION
CONTROLS AND INDICATORS
4
7
2
14
8
1 9
15

INTRODUCTION
CONTROLS AND INDICATORS
1. SoundTracker® Key
2. Memory Key
3. Channel 9 / 19 Key/ Memory Location 1 Key
4. LCD Display Panel
5. Dual Watch I Memory Location 2 Key
6. Scan I Memory Location 3 Key
7. CB-Weather Channel/ Memory Location 4 Key
8. On I Off I Volume Control
9. Lock Key
10. Squelch Control
11. Channel Up
12. Channel Down
13. PTT (Push-To-Talk) Key
14. Microphone
15. Speaker
11
12
13
5

6
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75WXST Transceiver
Installation Hardware
Connector Box
Operating in,truct,om for your
&cobra ·
WXST
COMPACT REMOTE MOUNT
CB RADIO WITH SOUNDTRACKER
Sd'{NJ>T-~~l! ·
•cvi. Noke Coming In •. s~ Signals Going Out •
Operating Manual

INSTALLATION
CONNECTOR BOX LOCATION
LOCATION
Mount your Cobra 75WXST Connector Box in a
convenient location, away from moisture and direct
sunlight, in a location that will not interfere with driving.
Cobra suggests mounting it either under the front seat or
on the fire wall.
UNDER THE FRONT
SEAT INSTALLATION
FIRE WALL
INSTALLATION
NOTE: Do not mount under
the hood, near heat ducts, in
direct line of the car 's heater
or near gas and brake pedals.
7

8
INSTALLING THE REMOTE MOUNT
1. Hold the Cobra 75WXST Remote Mount
in exact location desired for mounting.
2. Using it as a template, mark the location
for the mounting screws (included).
NOTE: Make certain that nothing will
interfere with the installation of the
mounting screws, before drilling holes.
3. Drill and mount the Remote Mount
as shown.
CONNECTING WIRES
4. Connect the antenna cable plug.
5. Connect the red wire directly to the
positive side of the battery or to a
connection on the fuse box that is
always on.
Connect the black wire to the negative
side of the car, usually the chassis. Any
other location with good electrical contact
(paint removed) will also work.
6. For dash installation of the remote
mount connector , mount the plate and
grommet kit in a convenient location
that will not interfere with the operation
of the vehicle.

INSTALLING
MICROPHONE
HANGER
1. Hold the microphone
hanger in location
desired for mounting.
Make certain that nothing
wi 11 interfere with the
hanger's installation.
2. Mark the location for the
two mounting screws
(included).
3. Drill and mount the
microphone hanger
as shown.
9

10
Be sure the antenna is properly connected
to the radio before transmitting. Prolonged
transmitting without an antenna, or use
of a poorly matched antenna, could cause
damage to the transmitter.
For the most reliable operation and
maximum range, Cobra recommends using
a vertically polarized , quarter-length whip
antenna (illustration 1 ).
Shorter, loaded-type whips are adequate
when maximum range is not required
(illustration 2).
NOTE: Mobile installations (cars, trucks,
boats, etc) should be made only with a non-
directional antenna system.
• A standard antenna connector (Type
S0-239) is provided on the Connector
Box for easy connection to a standard
PL-259 cable termination .
• Cobra antenna models are recommended;
see your local CB dealer or order directly
from Cobra.
• For maximum efficiency in boat
installations, a ground plate is required,
unless the vessel has a steel hull. Consult
your CB dealer for information regarding
an adequate grounding system.
Illustration 1
Illustration 2

INSTALLATION
SPEAKERS/NOISE INTERFERENCE
11
1. Mount external speaker in desired location
2. Plug into the back of the Connector Box
*The external speaker should have 4-8 ohms impedance and be able to
handle at least 4 watts.
IGNITION NOISE INTERFERENCE
The alternator and ignition system in your vehicle may limit your ability
to receive low signal levels.
Other noise interference can be the result of several different installation
variables. Consult your Cobra dealer or a 2-way radio technician to help
locate and correct the source of severe noise interference.
SOUNDTRACKER®SYSTEM
While previous systems only "blanked out" or limited noise in higher
sound frequencies, the SoundTracker® System reduces noise while leaving
the signal in the reception mode.
In transmission mode, it strengthens the signal, providing you with a
significant reduction in noise.

OPERATION
TURNING ON/ACTIVATING SOUNDTRACKERR
12
TURNING YOUR CB ON
1. Rotate the power ON-OFF
Volume Control clockwise .
2. Open the Squelch Control
counterclockwise until noise
is heard.
3. Adjust volume to a
comfortable level.
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ACTIVATING SOUNDTRACKER ®·
MEMORY CH9/19 DW
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1. Depress the SoundTracke r® key.
2. ~ will be displayed on the LCD readout.

TESTING SOUNDTRACKER®
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1. Select any unused channel
on your CB
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3. Turn the volume up
louder than your normal
listening level.
13
00
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000
000
2. Open the squelch control
fully by turning the knob
counterclockwise until it stops.
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MEMORY CH9/19 DW
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00000
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5. Depress the SoundTracker®
key. Notice the significant
reduction in noise.

14
SETTING THE SQUELCH
Think of your Squelch Control as a "gate" for incoming signals. If you
turn the Squelch Control fully clockwise, you effectively close the gate
and no signals will pass through. If you turn the Squelch control fully
counterclockwise, you open the gate and all signals come through.
To achieve the Desired Squelch
Setting (DSS):
1. Turn SoundTracker on
2. Turn the Squelch Control
(SQL) counterclockwise
until you hear nothing but
static.
3. Slowly turn the Squelch
Control back clockwise, just
until the static stops. This is
the optimum receiving level,
Desired Squelch Setting
(DSS) allowing only strong
signals to come through.
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SELECTING A CHANNEL
1. Change channels by pressing either
the channel ... up or channel T
down key.
2. To quick-advance channels, press and
hold either key.
15
0
CHANNEL
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16
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LCD DISPLAY
Your Cobra 75WXST CB is designed with a liquid crystal display that
indicates channel number, frequency and the operating mode.
2 digit channel display or 5 digit ISCAN I= Scan Indicator
frequency display
[u = Function Key Indicator
=SoundTracker® Indicator
= Amplitude Modulation
=Weather Channel
ITX I =Transmit Indicator
I RX I =Receive Indicator
[M] = Memory Indicator
Memory Channel Number
low! =Dual Watch Indicator
I EMG I =Emergency Channel 9
I LOCK I = Lock Key Indicator
Signal Strength Meter
NOTE: To avoid damaging the
LCD display, do not subject your
CB radio to extreme temperatures
(below -5°F or above 140 ° F) for
extended periods of time.

TO RECEIVE
1. Your 75WXST is
automatically in
receive mode.
TO TRANSMIT
2. Press the Push-To-Talk
( PTT) key.
3. Hold the microphone
about 2 inches from
your mouth and speak
in a normal voice.
4. Release the PTT
button and you wi II
automatically be in
receive mode again.
17
5 9
- .. ----·-
0.5 1 2 3

OPERATION
ONE TOUCH CHANNEL 9 AND 19/KEY LOCK
18
EMERGENCY CHANNEL
9 OR INFORMATION
CHANNEL 19
1. To access emergency
channel 9, press the
Channel 9/19 key once.
2. To access information
channel 19, press the
Channel 9/19 key a
second time.
3. Press again to return to the
original channel selected.
KEY LOCK
1. Press Key Lock button
to prevent unintentional
channel changing; Press a
second time to deactivate.
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MEMORY CH9/19
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5 DIGIT FREQUENCY
DISPLAY
1. Push and hold Memory key
for approximately 3 seconds.
2. Display will change to the 5
digit frequency of the channel
selected.
3. Push and hold Memory key
until display changes back.
19
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MEMORY CHs, 1
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20
ALL CHANNEL SCAN
1. Set Desired Squelch Setting
(DSS).(See page 14).
2. Press Scan key. When
activity is found on a channel
scanning will stop.
Five seconds after the activity
stops, the 75WXST will
resume scanning.
3. Press any key to stop
scanning sequence.
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