Uniden Bearcat programing with Freescan. I am picking up more than I want. I create a site for just Seattle PD which has 4 main dispatch channels, but then I end up hearing all kinds of other conversations. I am guessing that I am picking up everything on the "frequencies" that is Seattle PD. How do I narrow down my programing to only the HEX ID of the Talk groups I want?
Create a P25 Trunk System with only Site 125. You only need 854.2875 Mhz but it doesn't hurt to have the alternate control channels. (The frequencies in RED.) You can also add Site 126, 127 but you may not need them. From my monitoring there's nothing specific to those sites. Site 125 should get you all of SPD. The other sites may work better for you depending on your location.
Nessie gave a partial list of SPD TGIDs. Create a "group" and enter the above list into the scanner. There are a few others and you can ignore the ENC groups as you won't be able to hear anything anyway. The scanner won't stop on those either.
Also, Freescan defaults to ID SEARCH mode, IIRC. So you'll want to change that to ID SCAN if you ONLY want to hear the groups you've programmed.
Freescan uses the decimal TGID numbers -- not Hex.
Oh and you'll want to set the QUICK KEY to say "1" for the PSERN system -- and when the scanner starts scanning -- click 2, 3, 4, thru 0 to disable the other banks. Then you'll only be scanning the trunk system you've programmed.