Question about Cobra 29 LTD CB Radio

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Low volume and problems with squelch

Hi everyone! I have a problem with my Cobra 29 LTD ST. There is very low output audio and squelch doesn't work. All other functions are OK, I think so.
Receiver is OK because I can hear other stations but it's with very low volume. Squelch doesn't cut signal at all. The same situation is in PA mode - when I'm speaking to mike output volume is very low too.

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  • bear123464 Aug 16, 2008

    no squelch, no sound very low, and noisy sound.

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  • 12 Answers

Check your speaker for a short.

Posted on Aug 14, 2008

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I have a Cobra 29 WX NW ST Sound Tracker and the on/off control does not control volume or turn the radio off,it stays on all the time.I looked for that control online but could not find any that looked...


Hello johnson,
Welcome to FixYa. My name is John, and I will be assisting you with your issue today.
It does not have to be the same part number as the original one! I just fixed one
today with the same problem. If you have any old radio just laying around with an on/off
volume control in it, that will work just fine! Just make sure its not bigger knob wise.
You will probably have to remove the face plate to get to it. I some how worked around mine.
Just mark the wiring when you remove them, so you will know how to replace them. Easy job!
Hope this was helpful to you. Your Comments and Testimony's are always welcome here.
Thanks for choosing FixYa today and in the future.

John

Mar 01, 2011 | Cobra 29 WX NW ST 40-Channels Base CB...

1 Answer

I just bought a cobra 29 ltd, i hooked it up and calibrated it the way the manual said but when i turn it on and turn my squelch all the way to the left i barley hear it at all, and i have the volume all...


there may be a very low noise level. If the noise level is low you will hear almost nothing. You need to go on ch 19 and drive near a major interstate.

Key up and say, "Break one nine for a radio check" and a trucker will come back and tell you its working. If you hear him okay, then your radio is working fine.

Some days, background noise is heavier and lighter then others.

Oct 18, 2010 | Cobra 29 LTD CB Radio

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Cobra 29ltd CLassic, TX power and audio is ok, volume from spkr is good, squelch works but no cb recieve.


Try a new Mic. Make sure its a working mic. If you have a bad mic, the receive will not work.

Aug 22, 2010 | Cobra 29 LTD CB Radio

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Low output Low audio when hot


Hi, my name is John. Did you set your milliamps on your pre- driver and the other final? Let me know. Rate this solution on the four thumbs-up.....John

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Hello there
here is a link for the scematic ok?
best regards michael

  1. Cobra 29LTD ST, 29WX ST 29LTD ST Owners Manual. 29WX ST Owners Manual. DIAGRAMS. 29LTD ST Schematic Diagram ... WX Schematic Diagram. 29LTD, 29LTD ST, 29WX ST Factory Service Manual ...www.cbtricks.com/radios/cobra/29ltd_29ltd_st_29wx_st/index.htm - Cached

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Hi and welcome to FixYa,

Initially, pls a couple of ideas you may want to consider/explore or try/check:
  • PA/CB switch must be to CB;
  • RF Gain max clockwise;
  • Squelch counter clockwise;
  • Volume to your desired level;
  • Mute (off);
  • external speaker/speaker connection;
  • audio amp, verify if there is TX modulation;
  • antenna, antenna cable. SWR should be low.
Good luck and Thank you for using FixYa. Happy New Year.

Pls be informed that due to my current rank and rating, even a Helpful would be detrimental to my status. Should this solution not address your concern, it would be appreciated if you could just not rate this at all. Cheers.

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Squelch doesnt work


Open the component / speaker side cover on the radio, adjust VR3, this is the alignment control for the squelch. Set your squelch control knob on the front of the radio to about 10 o'clock and slowly adjust VR3 until the signal from the speaker is mute.

When you turn the squelch back to the 0 position, you should have signal with no squelch as in normal operation.

Thanks!
Dodgem

http://dodgem250.angelfire.com

Apr 06, 2008 | Cobra 29 LTD CB Radio

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