I can't believe that setting up a trunking scanner can be this hard. There is something painfully obvious that I'm missing or this box is busted.
This is my understanding about rebanding the PRO-163 & 164 scanners:
Part of re-banding requires changing the freqs. in the 866 to 868 range to the 851 to 854 range by subtracting 15MHz. Freqs. with a 5 in the 4th decimal place fall within the existing 1-120 channel numbers. BUT freqs. with a zero in that 4th place do not have a corresponding channel number in the 1-120 range. So Motorola "borrowed" channel numbers 440 to 558 to use for those freqs. To be able to hear those new freqs., the scanner needs to have a Custom Band Plan put in that adds channels 440 to 558, freqs. 851.0250 to 854.0000.
Also, I have read in the RadioReference group that the PRO-163 & 164 do not have the capability of adding these Custom Band Plans manually, but they can be added using software. I don't know which software, but a search of that group should find it.
These are the Custom Band Plans that need to be added:
Custom range 1; Lo base freq 851.0125, Hi base freq 861.9875, Offset 0, Spacing 25.
Custom range 2; Lo base freq 851.0250, hi base freq 854.0000, Offset 440, Spacing 25.
NOTE 1: You may not need the Hi base freqs.
NOTE 2: Some systems have a peculiarity that requires #1 and #2 to be reversed (enter #2, then #1).