Cobra 75wxst Tranciever Remote Mount Manual

							21
20OPERATIONLCDREADOUT2 digit channel display / 5 digit
frequency display
= Memory Indicator
= Scan Indicator
= Dual Watch Indicator
= Lock Key Indicator
Memory Channel Number
= Emergency Channel 9
= Function key indicator
= Amplitude Modulation= Weather Station
= Receive Indicator
= SoundTracker indicator
= Transmit 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. 
TXSTRXWX
AMEMGLOCKDWSCANMLCDDISPLAYYour Cobra 75 WX ST CB is designed with a liquid crystal display that
indicates channel number, frequency and the operating mode. 
OPERATIONTRANSMIT/RECEIVE
40
1359+30  SIG
0.51234  PWR
AMRX
ST40
1359+30  SIG
0.51234  PWR
AM
STTX
SOUND
TRACKER
TM
TO RECEIVE1.Your 75 WX ST is
automatically in the
receive mode and 
is illuminated.TO TRANSMIT1.Press the Press-To-Talk
(PTT) key. 
2.The TXicon will appear
3.Hold the microphone
about 2 inches from your
mouth and speak in a
normal voice.
4. Release the PTT button
and you will
automatically be in 
the receive mode again.
RX
F 
						

							22OPERATIONONETOUCHCHANNEL 9 AND 19
23
EMERGENCY
CHANNEL 9 OR
INFORMATION
CHANNEL191.To access emergency
channel 9, press Channel
9/19 key once. 
2.You are now on emergency
channel 9 and the 
icon will appear.
3.To access information
channel 19, press Channel
9/19 key again.
EMG
9
1359+30  SIG
0.51234  PWREMG
AMRX
ST
4.You are now 
on information 
channel 19
5.Press 9/19 again 
to return to the original
channel selected.
6.Original channel
19
1359+30  SIG
0.51234  PWR
AMRX
ST40
1359+30  SIG
0.51234  PWR
AMRX
STOPERATION
ONETOUCHCHANNEL 9 AND 19 
						

							25
KEYLOCK1.Press Key Lock button to
prevent unintentional 
channel changing.
2.You are now locked and the
icon will appear.
3.Press Key Lock button
again to deactivate.
LOCK
40
1359+30  SIG
0.51234  PWR
LOCK
AMRX
ST
OPERATIONFREQUENCY DISPLAY
24
5 DIGIT
FREQUENCYDISPLAY1.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 for 3 seconds.
4.Display will change back
to channel display.
27.75
5
F
1359+30  SIG
0.51234  PWR
AMRX
ST40
1359+30  SIG
0.51234  PWR
AM
ST
OPERATIONKEYLOCK 
						

							27
26OPERATIONCHANNEL SCANALLCHANNELSCAN1.Set Squelch Control (SQL)
to desired setting DSS. 
*See page 18 to set DSS.
2.Press Scan key. When
activity is found on 
a channel scanning 
will stop.
3.Scan icon will apear.
4.Press any key to stop
scanning sequence.
SOUND
TRACKER
TM
40
1359+30  SIG
0.51234  PWRSCAN
AMRX
ST
NOTE.The 75 WX ST will stop scanning and monitor a channel
when it receives an incoming transmission. Five seconds
after the transmission stops, the 75 WX ST will resume the
scanning function.
OPERATIONWEATHERCHANNELS
WEATHERCHANNELS1.Press the CB/WX key. 
2.The unit will change to
the WX function and a
weather channel number
will be displayed.
2.Press Up/Down Channel
keys to locate the 
weather station in 
your area.
3.Press the CB/WX key to
return to a normal 
CB channel.
1359+30  SIG
0.51234  PWR
RX
40AM
ST40
1359+30  SIG
0.51234  PWR
AMRX
ST1
1359+30  SIG
0.51234  PWR
AMWXRX
ST 
						

							28CHANNELSAVER FEATURE*Automatically retains the last channel used when CB is turned off and
returns you to that channel when CB is turned back on.
*To function, the “red wire” must be directly connected to either:
1.Positive (+) battery terminal. 
2.Connection on the fuse box that is always on.
See installation section for details.
NOTE:Leaving the 75 WX ST on after your car is turned off can drain
your car battery when connected to a constant 12 volt source.OPERATIONCHANNELSAVER/MEMORYCHANNELS
29
SAVINGCHANNELS
INMEMORY1.Select desired channel to
store in memory.
2.PRESS and RELEASE the
Memory key.
3.PRESSand HOLDthe
desired Memory Location
key to lock channel into
memory.
4.The Memory Location
will appear on 
the display.
40
1359+30  SIG
0.51234  PWR
AMRX
ST
RETRIEVING
CHANNELSFROM
MEMORY1.PRESSand RELEASE the
Memory key.
2.PRESSand RELEASE 
the desired Memory
Location key.
3.The channel in the
memory location will 
be recalled.
4.Repeat to recall other 
Memory Locations.
OPERATIONMEMORYCHANNELS 
						

							00
30OPERATIONDUALWATCH
31
DUALWATCHAllows you to
simultaneously monitor any
two preselected channels at
one time.
1.Adjust squelch (SQL)
setting to the DSS level
(see page 18).
2.Set CB to one of the
stations you wish to
monitor.
3.PRESS and Hold the DW
key until a beep is heard.
SOUND
TRACKER
TM
40
1359+30  SIG
0.51234  PWR
AMRX
ST
35
1359+30  SIG
0.51234  PWR
DW
AMRX
ST
NOTE:The 75 WX ST will alternate between both channels until it
receives an incoming transmission. Five seconds after the
transmission stops, it will again alternate between both channels. 
OPERATION
DUALWATCH
4.Select new channel.
5.Press and hold DW key
until a beep is heard.
6.The icon appears
and monitoring begins.
7.Press any key to stop
monitoring function.
DW
1359+30  SIG
0.51234  PWR
DW 
						

							33
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.
AConsumer 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 [email protected]
32
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 as you travel.
•Provide “local information” to find your destination.
•Communicate with friends and family during outdoor activities.
•Help law enforcement officers by reporting drunk and reckless drivers.A FEW RULES YOU SHOULD KNOW 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.
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 proof-of-purchase, such as a mechanical
reproduction or carbon or a sales receipt will be required. If you send
the original receipt it cannot be returned.
2.
The entire product, including CB unit and microphone must be sent in. 
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 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 (to avoid loss intransit) such as United Parcel Service (UPS), Roadway Parcel Service
(RPS) 
or First Class Insured Mailto Cobra Factory Service, Cobra
Electronics Corporation, 6500 W. Cortland St., Chicago, IL 60707.
Cobra is not responsible 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 automatically be sent informing you of the repair charge or
replacement charge. If you have any questions, please call 773-889-3087
for assistance. 
						

							35 34
WEATHER CHANNEL MESSAGESYou can receive up to the minute local area weather reports provided by
NOAA (National Oceanic Atmospheric Administration) 24 hours a day, 
7 days a week. An agency of the U.S. Department of Commerce, NOAA
warns of dangerous weather, charts our seas and skies, guides our use
and protection of ocean and coastal resources and conducts research to
improve our understanding and stewardship of the environment.
The National Weather Service operates about 380 stations. Approximately
90 percent of the Nation’s population is within listening range of a NOAA
Weather Radio broadcast.A similar network of about 15 stations using the same frequencies broadcast
continuous weather information across much of southern Canada.If you have a question concerning NOAA Weather Radio or wish to
receive a listing of NOAA Weather Radio receiver locations, please
contact your nearest National Weather Service Office, or write to
National Weather Service (Attn: W/OM11), National Oceanic and
Atmospheric Administration, Silver Spring, MD. 20910.
Note: Some areas may not have a broadcast tower within the receiving
range of your 75 WX ST.
Operating Procedure for Emergency Communications
1.
For EMERGENCYcommunications, set radio to Ch. 9. For 
non-emergency communications, select desired Channel by pressing the
CHANNEL UP/DOWN tuning buttons until reaching the desired Channel.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.
2.When asking for aid on Channel 9 it is suggested that you request a
REACTbase to respond by saying “Break Channel 9 for a REACT base”
and provide the CB DISTRESS DATA (called “CLIP”):
CALL SIGN-Identify yourself and vehicle.
LOCATION-Be exact.
INJURIES-Number. Type. Trapped?
PROBLEM- Give details and help required. Air CLIP
repeatedly so any
monitor can aid you.
If you dont receive a response on Ch. 9; try Ch.14 or 19.
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.
USE CHANNEL 9 FOR EMERGENCY ONLY
PermittedExample Message
Yes“A tornado sighted six miles north of town.”No“This is observation post number 10. No tornado sighted.”Yes“I am out of gas on Interstate 95 at mile marker 121.”No“I am out of gas in my driveway.”
Yes“There is a four-car collision at Exit 10 on the Beltway, 
send police and ambulance.”
No“Traffic is moving smoothly on the Beltway.”
Yes“Base to Unit 1, the Weather Bureau has just issued a 
thunderstorm warning. Bring the sailboat into port.”
No“Attention all motorists. The Weather Bureau advises that the snow tomorrow will accumulate 4 to 6 inches.”
Yes“There is a fire in the building on the corner of 6th and Main Streets.”
No“This is Halloween patrol unit number 3. Everything is 
quiet here.” 
						

							37 36
CB10-CODESCitizens Band radio operators have largely adopted the “10-code”for
standard questions and answers. Its use permits faster communications
and better understanding in noisy areas. The following table lists some of
the more common codes and their meanings:
CodeMeaning10-1Receiving poorly
10-2Receiving well
10-3Stop transmitting
10-4OK, message received
10-5Relay message
10-6Busy, stand by
10-7Out of service, leaving air
10-8In service, subject to call
10-9Repeat message
10-10Transmission completed, 
standing by
10-11Talking too rapidly
10-12Visitors present
10-13Advise Weather/Road 
conditions
10-16Make pick up at
10-17Urgent business
10-18Anything for us?
10-19Nothing for you, return to base
10-20My location is
10-21Call by telephone
10-22Report in person to
10-23Stand by
10-24Completed last assignment
10-25Can you contact
10-26Disregard last information
10-27I am moving to channel
10-28Identify your station
10-29Time is up for contact
10-30Does not conform to FCC rules
10-32I will give you a radio check
10-33EMERGENCY TRAFFIC
10-34Trouble at this station
10-35Confidential information
10-36Correct time is
CodeMeaning10-37Wrecker needed at
10-38Ambulance needed at
10-39Your message delivered
10-41Please turn to channel
10-42Traffic accident at
10-43Traffic Tie up at
10-44I have a message for you
10-45All units within range 
please report
10-50Break channel
10-60What is next 
message number?
10-62Unable to copy, 
use phone
10-63Net directed to
10-64Net clear
10-65Awaiting your next 
message/assignment
10-67All units comply
10-70Fire at
10-71
Proceed with transmission in sequence
10-77Negative contact
10-81Reserve hotel room for
10-82Reserve room for
10-84My telephone number is
10-85My address is
10-91Talk closer to mike
10-93Check my frequency on this
channel
10-94Please give me a 
long count
10-99Mission completed, all 
units secure
10-200Police needed at
This device complies with part 15 of the FCC rules. Operation is
subject to the following conditions:
1. This device may not cause harmful interference
2. This device must accept any interference received, including
interference that may cause undesired operation.CB Channel Freq.
Channelin MHz126.965
226.975
326.985
427.005
527.015
627.025
727.035
827.055
927.065
1027.075
1127.085
1227.105
1327.115
1427.125
1527.135
1627.155
1727.165
1827.175
1927.185
2027.205
CB Channel Freq.
Channelin MHz2127.215
2227.225
2327.255
2427.235
2527.245
2627.265
2727.275
2827.285
2927.295
3027.305
3127.315
3227.325
3327.335
3427.345
3527.355
3627.365
3727.375
3827.385
3927.395
4027.405
WeatherWeather Freq. 
Channelin MHz
1162.550
2162.400
3162.475
4162.425
5162.450
6162.500
7162.525
8161.650
9161.775
0163.275
FREQUENCY RANGEYour COBRA 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 and 10 weather channels as
shown below. 
						

							39
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 a 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 Cobras expense, if the product is repaired
or replaced under warranty. For further details concerning procedures for obtaining
service, see the “If You Think You Need Service” section of the Owner’s Manual.
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 W. Cortland Street
Chicago, Illinois 60707
3875WXST SPECIFICATIONSGENERAL
CHANNELSCB - 40 CH
WEATHER - 10 CH
FREQUENCY RANGECB - 26.965 TO 27.405 MHZ
WEATHER - 161.650 TO 163.275 MHZ 
FREQUENCY TOLERANCE0.005 %
FREQUENCY CONTROL PLL (PHASE LOCK LOOP) SYNTHESIZER
OPERATING TEMPERATURE RANGE-30°C TO + 65°C
MICROPHONEELECTRET, PUSH-TO-TALK
INPUT VOLTAGE 13.8 VDC, EXTERNAL
ANTENNA CONNECTORSO239
METERLCD DISPLAY, ICONS
SIZEL 2 3/4 x W 1 7/8 x H 4 1/4
WEIGHT1 LB.
TRANSMITTER
POWER OUTPUT4.0 W AT 13.8 VDC 
MODULATIONAM
FREQUENCY RESPONSE300 - 3000 HZ AT -6 DB
OUTPUT IMPEDANCE50 OHMS, UNBALANCED
RECEIVER
CB
SENSITIVITYLESS THAN 1 uV FOR 10 DB S/N
IF FREQUENCYDUAL CONVERSION
1 ST - 10.690 MHZ, 2ND - 455 KHZ
AUDIO OUTPUT500 mW MAXIMUM AT 10 % THD 
FREQUENCY RESPONSE300 - 3000 HZ AT -6 DB
2ND IF IMAGE REJECTIONGREATER THAN 60 DB
ADJACENT CH. REJECTION50 DB MIN.
AUTOMATIC NOISE LIMITERBUILT- IN.
FREQUENCY CONTROL PLL (PHASE LOCK LOOP)
WEATHER
SENSITIVITYLESS THAN 1 uV FOR 12 DB SINAD
IF FREQUENCYDUAL CONVERSION
1st: -10.690 MHz
2nd: -455 KHz
AUDIO OUTPUTMAXIMUM 500 mW AT 10 % THD 
FREQUENCY RESPONSE300 - 3000 HZ AT -6 DB