I had a person from Uniden help me over the phone program my Uniden BC355N for 2 different counties. It sat on my desk all day 7 hours and only stopped on a channel one time and no one talked? .It has the "Private" blinking and the word "Scan" going across the screen continually. Is that normal to go all day and not hear any calls? It's set for Police and Fire??? HELP.....