Question about Cobra 29 LTD CB Radio

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29 nw LTD no audio on receive out the speaker in the radio or through the ext speaker and on transmit no audio.Radio shows a 4 watt dead key

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If you take your external speaker and plug it into your PA jack in the back and key up your mic do you hear anything. If so then its not your IC chip if not its your IC chip and it will need to be replaced.

Posted on May 14, 2010

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Related Questions:

1 Answer

Meter don't work


Hook radio to a dummy load with a watt meter in line---if no actual power being transmitted radio will not go to cal or show transmit power.

May 19, 2012 | Cobra 29 LTD CB Radio

2 Answers

Low transmit audio cobra 29 ltd nw


Are you talking about this radio or what others are hearing from your radio?

My friend, no one but the holder of a 1st class FCC radio license is permitted to adjust the input power to the final amp. Further, one needs some pretty technical equipment to accomplish this fine tune adjustment. Failure to properly set this envelope will result in degraded operation and possible failure of your radio.

If you can't live with the present circumstance, get your radio profesionally repaired.

Thank you for your quesiton at FixYa.com-

Jan 06, 2010 | Cobra 29 LTD CB Radio

1 Answer

Where does the pin on a mic go to on a cobra 29 ltd


1/ shield 2/ audio (usually white,it's the wire the shield is wrapped around) 3/ red 4/ black if the radio transmits without keying the mic. switch # 3 and # 4.Good Luck

Apr 25, 2009 | Cobra 29 LTD CB Radio

1 Answer

Trying to hook up a astatic echo board


Looking at the plug from inside the radio, with the nub facing downward, from right to left you have pin1 pin2 pin3 and pin4.

1-Shield
2-Audio
3-Transmit
4-Receive

Colors are

1- Red
2-White
3-Blue
4-Black

Mar 24, 2009 | Cobra 29 WX NW ST 40-Channels Base CB...

1 Answer

Cobra 29 nw ltd won't transmit


Have you cracked the radio open yet?  check for loose connections etc.  get back to me if that doesnt yeild any results

Dec 23, 2008 | Cobra 29 LTD CB Radio

1 Answer

No receive cobra 29 ltd classic


Hi and welcome to FixYa,

Initially, pls confirm that there is modulation (transmit audio). The reason I asked is if IC4 (TA7222P) is blown, then the radio would have no audio amplifier which would explain no receive audio. Additionally, the final and pre-final (TR15 & 15) gets is modulated TX+12 through D8 from T1 which in turn is the output of IC4 through C48.

Perhaps a schematic diagram may be of further help.

Good luck and Thank you for using FixYa. Happy Holidays.

Dec 18, 2008 | Cobra 29 LTD CB Radio

1 Answer

CB radio PA speaker


Freddy, hello. The first thought that comes to mind with your problem is that if the 29 is an older model, the audio circuit or audio chip could be tired. If your talking about the receive volume being low thru the ext. speaker, then there is a rx. wire inside the mic cord. When it breaks, it cuts the volume in about half. The rx. wire is on pin # 4. Maybe your using the wrong ohm value speaker. You need 4 or 8 ohm. If you are refering to the outgoing modulation being real low, then the radio mod. has just been turned down to 50-60%. That's about all I've got for now, not being able to actuallly see the radio,,, Have a good day, and let me know how it goes,, Mechanic

Oct 22, 2008 | Radio Communications

1 Answer

Transmits but doesnt receive


If the meter shows that it's receiving something, the microphone may be the problem. Another possibility is the speaker & plugging an external speaker in would confirm this. Aslo make sure the squelch control is turned all the way to the left (counter-clockwise) & the RF gain is turned to the right (clockwise).

Jul 18, 2008 | Cobra 29 WX NW ST 40-Channels Base CB...

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