Problem With CB

[JonL008]

I have a classic Cobra 29 CB. I have it all plugged into my truck and the antenna on my roof. However, I can transmit fine on it with people talking back but I can not receive anything on the CB itself. I know people get my transmissions because my friend also has a CB and can hear my fine. I have turned the squelch completely off and all the noise reducers off and yet I can still hear nothing come back over the radio. I hear a little bit of static but no communication even though on my friends we are hearing me talk and others talk. To even get static on my CB I have to turn the RF gain all the way up and then I can hear a good amount of static but still no transmissions from other people.

Anyone know what is going on here or how to fix it?

I was told it could possibly be my antenna.

Thanks,

JonL

 

[mike_gain]

When you say classic Cobra 29, is that the model name or are you talking about a really really old "classic" cobra 29? Some of the cobras, the older ones will not receive if one of the mic wires is broken. The receive will cut in and out if you wiggle the cord at the mic plug. It's the same as if you unplug the mic while listening. Good luck.

 

[JonL008]

Its the brand of it. I bought it in 08 and it worked fine and then i didnt use it for a while because I broke my antenna but now I got a new antenna and it will not receive anything.

 

[canav844]

Can you hear better with the truck off? You may have some RFI coming from your vehicle/engine that could potentially block out all but the strongest signals.

 

[EC-7]

You should hear static with the squelch all the way down, even with no antenna.
I bet you have a bad microphone connection. Most likely the Receive wire on PIN 4.

Remove the mic from the radio.
Take a flathead screwdriver and touch it between pin 1 and 4.
See image: http://eriecb.com/images/4pslr.jpg

This will put the radio into receive mode. If you dont hear static, then its another problem, but bad mic connections are a common problem from the cords being stretched and pulled on. The wires break or come loose. It probably needs to be soldered back on.

Wiring guide
Cobra 29LTD ST, 29WX ST

 

[GoNavy]

I have a classic Cobra 29 CB. I have it all plugged into my truck and the antenna on my roof. However, I can transmit fine on it with people talking back but I can not receive anything on the CB itself. I know people get my transmissions because my friend also has a CB and can hear my fine. I have turned the squelch completely off and all the noise reducers off and yet I can still hear nothing come back over the radio. I hear a little bit of static but no communication even though on my friends we are hearing me talk and others talk. To even get static on my CB I have to turn the RF gain all the way up and then I can hear a good amount of static but still no transmissions from other people.

Anyone know what is going on here or how to fix it?

I was told it could possibly be my antenna.

Thanks,

JonL

Have you tried using an external speaker. The built in speakers on CB's go out a lot, I alway use an external, should be a plug on the back of the unit, one for PA and another for ext spk. The static you hear may not be from the rec gain, just the static from a blown speaker. Also Cobra 29s have meter gauge's on the front, if the you are getting needle swings when someone answers then it is not the radio or mic, but the speaker for sure. No needle swing then the radio's internal circuits are the problem.