My BC355N does not work well while my car is in motion(it became very choppy); I have a trek glass mount antenna. When my car is NOT in motion for around 10-15 seconds, my reception gets way better. Once I go past 10mph, the signal get very choppy; I switched antennas because I thought it was an antenna problem but it's not. FYI every station I had on the scanner were very close locations to were I live. I just ordered the BCT15X hoping that it was just that scanner. Is there a chance I might have the same problem with the next scanner; and what could have caused this problem?