Cobra 21 Sqeal

[63alaskan]

I have an ancient but functional 23 channel Cobra 21 that I'd like to use. I bought a magnetic base antenna with a load coil from Radio Shack. Everybody I talk to tells me the signal has a bad squeal. The antenna is mounted on the roof of a f-250 extended cab truck with a camper on it. Any ideas about whtat's going on?

[thetez]

do you use a power mic?

[KoonDog]

The mic would be my first guess, too... esp. if you leave the talkback turned on.

Noise cancelling mics are worth the money, for sure.

[thetez]

if the power mic is turned to high its probably the cause....

i think if the talk back was on he would know it squeals as well.... unless the talk back speaker isnt working...

[AB8RU]

could be a short in the mic being a electronic switching system, a failed part, SWR Mismatch, corrosion on the board itself .

my sugguestion take it to a repair shop that works on radios and doesnt rip you off.

Good Luck !

[thetez]

ha i just re read the post.... yeah hes /\ right you probably wanna get the whole thing checked out, i mean old electronics dont work forever... but who knows it could be something unrelated to the condition of the radio, or a mic... it could be the antenna set up or a ground problem or something. first step make sure all is well with the radio....

[truckinpa16]

rf gain could possibley be to high try adjusting down little by little

[LumbermanSVO]

I have a Cobra 21 as well. It died on me this last week. I can listen but if I try to talk it just comes over the FM radio and no one hears me. Got a lot of use out of it for a free radio.


Guess I'll just buy a new radio in a week or two.