Question about Cobra 29 LTD CB Radio

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Cobra 29LTD transmitting & receiving 1 channel higher than is shown on the display.

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There are no 10k switches on cobra 29 from factory. There are however are 10khz between channels and 20khz every third.
It is most likely a cold solder joint at crystal. I suggest if you are comfortable with solder iron press down on crystal and remelt solder. This crystal has a wire strap-over soldered from L24 to it after locating it near center of board component side hold it to light to find contacts on solder/copper side.

Posted on Jul 24, 2011

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Hello im wondering have you got the 10kc button enabled

Posted on Apr 02, 2011

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1 Answer

Cobra 29ltd turns on but no sound afterwards, not even when I ask for a question the needle doesn't move after I ask the question, installed in a freightliner cascadia


I guess i will have to ask you the most obvious things. Do you have a suitable antenna connected? The needle moves on receive in most cases, not transmit. A watt meter will help you know if you are transmitting.

Aug 21, 2016 | Cobra Radio Communications

1 Answer

My cobra 29ltd will transmit but want receive


three things you need to check the mic must be plug into radio, make sure that the radio is set to cb not pa,check your rf gain is turned all the way up and last of all check the antenna.Now that being said if the radio does not receive you might have to take it to a radio shop.

Jun 11, 2014 | Cobra 29 LTD CB Radio

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How to wire a HG M73 mike to a galaxy DX 959


Stock
1- Shield (Ground)
2- Yellow (Audio)
3- Red (Transmit)
4- White (Receive)

Cobra
Stock
1- Audio
2- Transmit
3- N/C
4- Shield
5- Receive

Dec 04, 2011 | Galaxy Radios DX-959 40-Channels Base CB...

1 Answer

Cobra 29LTD Classic RX seems to go off frequency. Transmit is fine, but can't receive on same channel. i.e. TX on Ch 11, but RX some other frequency. Was talking to my wife and suddenly, her signal was...


all functions of the radio are performed by the main IC 2816c . The frequency is controlled by this also and if it is blown you will loose your frequency and the problem that emits is in your statement.

Oct 23, 2011 | Cobra 29 LTD CB Radio

2 Answers

My cb cobra 29 ltd problem is channel 1 is ok but channel 2 not receive


Did you have someone get on channel 2 to see??? Maybe channel 2 was quiet and channel one had better receive or noise.. You never know until you check it with another radio. That is NOT a common issue at all on those radios. Better off doing that test.
"WILDCAT" IN LAURELVILLE OHIO
35 YEARS OF CB FUN!!!

Dec 28, 2010 | Cobra 29 LTD CB Radio

2 Answers

Older cobra 29ltd channel 1-32 all receive channel 20. 33-40 are ok but it transmits on the right channel also motor boats in receive on channels 16-19.


you have a bad channel synthesizer chip on the board i dont know which chip they use,as for the motorboating in the audio,you most likely have a bad electrolytic capacitor in the crossover circuitry before the audio output I.C.( can have 8 or 10 pins on them depending on which chip it uses) mounted on the side panel perpendicular to the board,they run warm,but should never run hot to the touch

Oct 26, 2010 | Cobra 29 LTD CB Radio

1 Answer

I have a Cobra 21- 23 channel CB and the wires pulled out of the plug. The mike wire has red,yellow black,blue,whiteand a ground. My plug has only four prongs to solder to. What four colors do I use?


Hello there
Here is the diagram for you
Cobra 29LTD, 29LTD ST, 29WX ST
Documentation Project
CBTricks.com

TIPS:
You need to have Acrobat Reader version 5 or newer installed to view the files with pdf_1.gif icon.
If the files with jpg.gif or gif.gif icon will not display see the Site FAQ for help on printing, viewing and using this information.
25ltd_st_sm.jpg
Click Picture to See Close-up
cobra_29ltd_st_29wx_st_side.gif 29LTD ST Owners Manual pdf_1.gif
29WX ST Owners Manual pdf_1.gif
DIAGRAMS
29LTD ST Schematic Diagram pdf_1.gif
29LTD ST Schematic Diagram gif.gif
29WX ST Schematic Diagram pdf_1.gif
WX Schematic Diagram pdf_1.gif
29LTD, 29LTD ST, 29WX ST Factory Service Manual pdf_1.gif
Page 1 to 11
Page 12 to 34
29LTD Factory Service Manual pdf_1.gif
29LTD
29LTD Schematic Diagram pdf_1.gif
29LTD Schematic Diagram jpg.gif
29 LTD Classic Schematic Diagram pdf_1.gif(Courtesy of Rick Jackson)



Mic Wiring
Stock
1- Shield
2- Audio
3- Transmit
4- Receive
Astatic (4 wire)
1- Shield
2- White
3- Red
4- Black

Astatic (6 wire)
1- Shield & Blue
2- White
3- Red
4- Black
Yellow NC
Daiwa EM-500
Cobra CA Series

1- Shield & Black
2- Red
3- White
4- Blue
Galaxy DC-521S (4 wire)
1- Shield
2- Yellow
3- Red
4- Black
Galaxy CB-660EI
1- Shield & Black
2- White
3- Red
4- Blue
Sadelta
1- Shield
2- White
3- Brown
4- Green
Turner
1- Shield & Red
2- White
3- Blue
4- Black
Yellow NC

Nov 17, 2009 | Cobra 29 LTD CB Radio

2 Answers

Cobra 29ltd cb radio


Hi,

A couple of suggestions:
1. verify that the RF Gain is maximum clockwise;
2. verify that the ANL or noise limiter is OFF;
3. pls add a ground strap from the body of the Cobra 29LTD to the chassis/GND of the vehicle or to your house GND connection;
4. Verify that your Wilson 5000 has a sufficient ground plane such as roof or metal objects.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Jun 15, 2008 | Radio Communications

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