I have had my HomePatrol II for about 3 weeks. Software is loaded, channels and frequencies appear to be in the data base but I have absolutely no reception for all the police channels in St. Louis County which has been on the P25 system for about a month. All EMS channels are fine but I just do not know how to make the police channels come through. Yes--I have them selected in Service Types, but I can't hear them. What's going on?