I can't figure out my cb radio. I have a cheap cobra cb, 18 feet of coax cable and a 4 foot firestik. When i turn my cb on the signal meter jumps and i hear a bunch of static. I can't get any signals from cbs on the road. I drove down to 6 and surfed the channels and didn't get anything.

Any ideas what is wrong.

Oh it was hooked up to a cheap magnetic antenna for a while it may have hurt the radio. Maybe?