Does the CB have a SWR meter on it? First move that ground to another place, and give it a go. Second just because you don't hear anything doesn't mean that something is wrong as well. You just might not be in range. A good test would be if you had a friend on know someone with a cb and get them to test transmit. You could even try to test by calling on the channels and seeing if anyone answers...wait a few seconds and if now one picks up then go to the next channel until you cycle through them all. What model cb did you get?
__________________
|