Your CB radio has been thoroughly tested, no squealing problem was observed.  The squealing noise you have experienced may be solved by one of the following:


  1. Check the SWR of your antenna.  The SWR must be below 3, and below 2 is ideal.  Excessively high SWR may cause squealing (and also results in short range).
  2. Try running a ground wire to a screw on the side of the radio.
  3. If you are using a power microphone, try turning the gain down.  Also try using the original microphone.
  4. If your CB has a Dynamike control, try turning it down.
  5. If you are using an external speaker, make sure the speaker is not grounded. Also try the radio with the external speaker disconnected.