I live in Lee County, FL and am trying to receive only the Sheriff's dept. frequencies, not EMS, Fire, etc. I have programmed all the frequencies in to the 164 and entered the decimal numbers in to the Channels List hoping if I had Closed checked it would only receive those channels but it still receives all transmissions. Next I entered all decimal numbers and locked each out, same problem, receiving everything. Anybody have a clue what I am missing? I live in Ft. Myers, FL. Any help would be appreciated.