I have been trying to program my scanner for a while now. I live in Westchester county NY and trying to propgram the Westchester County UHF trunk system. The two base frequencies are 470.000 with a 380 offset and a 12.5 spacing, and 476.000 with a 520 offset and 12.5 spacing. I enteretd the North and South control channels and the talk groups i want with the proper DEC and still cannot hear anyhting??? Please HELP!!!!