Question about Cobra 29 LTD CB Radio

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Cobra 29 ltd classic needle doesn't work correctly

When I key up the needle swings all the way over past the numbers. When you receive the needle does not hardly move. Even with a close signal (less than one mile) the needle doesn't hardly move. When calibrating the SWR the needle bounces back and forth too badly to get an accurate measurement. Bought used, clean on outside, everything else seems to work correctly, original mic.

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  • edcadfab Mar 12, 2009

    OK, Thank You.

  • james morgan May 11, 2010

    this is typical of a scerdrivered radio the radio is out of alignment as far as the meter goes there are adjustments that can be made inside the radio. I will have to get the variable resistor numlers and will get back to you. i will give you the instructions when i contact you next.

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Don't worry about the meter in the radio. They are only close to actual reading any way. Just get an external meter. you are better off in the long run, and you don't have to mess with anything inside the radio if you don't know what your doing.

If you must have the meter working correctly, then take it to a truck stop CB shop, or any other cb shop and have it aligned. It should cost about $30. There is equipment needed to align a radio properly and the cost for it far exceeds what an external meter, or having a cb shop align the radio.

Posted on Apr 25, 2009

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Lx29 blue tut. Locked in 9/10 mode. How do I reset it?


PDF]EIi?tr,iitts - American Radio History

www.americanradiohistory.com/Archive-Radio.../90s/.../EN-1993-11.pdf
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Cobra 29 LTD Classic CB Radio - YouTube? 5:42https://www.youtube.com/watch?v=vJle8vlsWLcAug 20, 2013 - Uploaded by C B WorldIn this product review we look at the Cobra 29 LTD Classic CB radio and ... Just like in the manual. most channels are below 3. a few are not.Cobra 29 LTD Classic Troubleshooting - iFixithttps://www.ifixit.com/.../Cobra_29_LTD_Classic_TroubleshootingiFixitCobra 29 LTD Classic is not transmitting or receiving. The Antenna is not tuned correctly; The Radio is not in CB mode; The Radio is on the wrong channel; The ...Marine Radios ' Cobra Electronics Corporation

Jan 07, 2016 | Cobra CB Radios

1 Answer

When do you know if you have a decent radio


The 29 has a built in SWR meter--check the match to make sure it is below 2 (lower the better).

The radio can be peaked for better than factory audio.

If the squelch is up too high you will not hear people below a certain signal level---in your case set it so you hear who you want to and not jokers.

RF gain lowers signal the radio sees for receive.

The stock mic will work but make your voice somewhat flat sounding---a power mic or having the mod limiter removed will make the radio and your voice louder.

Let me know if questions.

Jun 10, 2012 | Cobra 29 LTD CB Radio

1 Answer

Hello i own a cobra 29 ltd classic from 1993 today i was talkin skip like crazy!! running about 100 watts out of a texas star modulator!! i left for a while came back talked for a while everything was good...


sounds like the amp got hot and shorted on the bias.. and is keyed up a few watts. to fix you will have to have the amp repaired. new power transistor. to fix. 3174269649 Texas.

Dec 12, 2010 | Cobra 29 LTD CB Radio

1 Answer

HAVE A COBRA 29 LTD. MY SIGNAL IS WEAK WHEN I KEY UP AND I CAN"T RECEIVE A GOOD SIGNAL FROM OTHER CB RADIOS. DO I NEED TO HAVE IT PEAKED AND TUNE?


May be an antenna/coax issue. Turn the DYNAMIKE all the way up. Turn the RFGain all the way up. Turn the SQUELCH all the way to the left.
GET A "SWING KIT" INSTALLED!!!
"WILDCAT" IN LAURELVILLE OHIO
35 YEARS OF CB FUN!!!

Dec 08, 2010 | Cobra 29 LTD CB Radio

2 Answers

Cobra classic 29 ltd


Had fixed the same problem yesterday. My cobra worked when it wanted to, when it didn't it looked like you explained. I found out that on my cobra the blue wire on the mike connector was broken. When it disconnects, no sound. after soldering, everything works fine.

Dec 04, 2008 | Cobra 29 LTD CB Radio

2 Answers

Cobra 29 Ltd Classic


In most cases just turning up VR4 is more then enough. Replacing the final, tr14 with another transistor requires changing many more parts to get it to work.

With a new 29, there is no need to change the final. Just turn vr4 all the way up and you will see around 20 - 25 watts. L13 won't gain you a single watt. L12 will raise the dead key, and usually you want a lower dead key for good swing. L14 will gain you a few watts, but don't adjust this unless you have a watt meter. You turn it out to increase wattage, but too much will over bias the final and shorten its life.

You hook it to a watt meter with a dummy load. Then say a steady AHHHH into the mic while keyed. Turn the slug out until the needle stops going up, then back it down to where it stopped.

The easy thing to do, and you will be pleased is just to turn VR4 up. Now, Up is counter clockwise. Its a variable resistor, so the less resistance, the more modulation. So you want to turn the VR down.

that will be more then enough.

Sep 06, 2008 | Cobra 29 LTD CB Radio

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