I just received by HP BCD 436 today. I updated the firmware and database. I programmed it with my zip code. Its not picking anything up but wx and cb channels. My 396xt and psr 500 are going off constantly with stock antennas. I see the channels going by but it doesn't stop. I took it for a drive and it finally started pick up some Starcom 21 P25 transmissions. Is there some setting that I'm missing? Or does this scanner just perform this poorly. I live in central Illinois. I would appreciate any help. Thanks.