Radio Shack TRC-448 CB Radio low SSB and USB Static

Since this radio was made between 1977 & 1982, it probably needs all the electrolytic capacitors replaced. Then have an alignment done on the receive section of the radio.

 

This is a common problem, there are three transistors (two are for the product detector and the other is the audio preamp before the audio amp and speaker).

Most likely the audio preamp transistor is bad.

This is a common problem.

 

Yep because am has a separate detector and preamp. There is a cap in the ssb section that could be replaced but I've seen the preamp go with a lot of these boards. It is best to take it to a good repair tech and have them carefully replace it with the right replacement.

 

Q215, q216, q217. Don't know where they are located, they are on the board itself.

 

I don't know what cap number, the tech will know.

Q217 is the preamp but you have to check if the product detectors are working.