I just received my new scanner and set it up with the ARC 300 software. The problem is that as I here a broadcast the signal drops very briefly out going from 4 bars to 1 and back. The dropout is very fast almost not noticeable. Problem is it affects the audio slightly and is annoying. When listening the signal alternates at regular interval between 4 and 1 bar. Could it be a setting or do I have a defective unit?