Hello, need your help. I've locate what i believe are the Centerville Police frequencies in the p25 system. I own the Whistler TRX-1. I can not hear a thing. It appears there is some action on these 3 channels but nothing to be heard. Do I need to do some adjustment to the settings in the scanner or am i in the wrong area. The one conventional channel that shows up here on this site under cp dept does not work. Thanks.