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I have a cobra 29 ltd classic that has no sound not even the static from the squelch being turned all the way up. And its the same using an external speaker.

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You will need to get the audio chip replaced

Posted on Mar 25, 2011

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1 Answer

Cobra 29 LTD LX LE vr pots


vr1 "s" 9 setting on the tx meter vr2 voltage setting vr3 squelch vr4 amc vr5 p4 display on tx signal meter.

Mar 22, 2013 | Cobra 29 LTD CB Radio

1 Answer

I have a cobra 29 with echo, tweeked and tune. I can transmit strong and I hear those who speak to me but I dont have any static like you do with a new radio. Is this something I need to worry about as Im...


Make sure the squelch is turned all the way to the left, the RF GAIN is turned all the way to the right. The cobra 29 has a very good noise blanker, Turn the ANL/NB switch to off, You will probably hear a Lot of static, As long as you have a good ground on the radio and antenna, and your SWR is 1.5 or lower, you need not worry about static.

Oct 05, 2012 | Cobra 29 LTD CB Radio

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

I have a cobra 29 ltd classic that didn't work in


You say you are getting no sound, do you mean that you do not even get static?

Here is a couple of things you can do:

1. Make sure the CB/PA switch is in CB
2. Switch the NB/ANL switch to off
3. Turn the squelch all the way counter clockwise
4. Turn the RF Gain all the way clockwise

With all of the settings like this, you should at least get static if the antenna, coax, and coax connector into the radio pc board is good.

You can make sure the antenna is not grounding out to the antenna bracket. Make sure the plastic ferule (usually white or black) is mounted on the top of the bracket, under the coupler with the lip facing down. This is used to insulate the antenna from the bracket. If the antenna itself is grounded out to the vehicle, it will be like you have no antenna at all.

If you look at the picture I attached, you will notice a small white piece on top of the mounting bracket.


Did the CB tech make sure you have a good ground plane? This is accomplished by making sure the antenna mounting bracket is grounded to the vehicle and the plastic ferule is on the top of the bracket, not under.
3_6_2012_5_41_29_am.jpg3_6_2012_5_41_55_am.jpg

Feb 09, 2012 | Cobra Radio Communications

1 Answer

Have Cobra 29 LTD Classic, no sound when hooked to antenna, no light or meter movement on the RF/SWR meter, DOES have power to radio and channel display, any tips to repair, or check for problem areas?


check the squelch by turning all the way both ways. check the external speaker socket. if it is the swicthing type it could be either bad conntact or dry joints. try an external speaker to see if that works. another thing is I believe it wont work if the microphone is not pluged in or connection fault there. Good luck.

Jul 25, 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

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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