Unfortunately some of it is outdated and is probably on RR somewhere most of it still stands.
Usually the 10 cars are the shift supervisors (Sergeants)
I believe 9-Charlie units are Rockville City like Chevy Chase Village Police (CCVP) are 9-Mary-xx units
Example for Bethesda District 2 would be #-Delta-10
Units I heard on A7 TAC reference the hostage negotiation were the specialized units:
9-Tango-xxx TOD: Tactical (ERT/SWAT)
9-Ocean-xxx CID: units not assigned other letter designation
and the rest (#-Charlie-xx) were regular beat units from Rockville and Rockville City
Thanks, DMI. I was hoping you would appear with an answer. Also, thanks for setting me straight on additional info I should have included in the original post such as talk group numbers. I am new at this reporting stuff but I'm improving!! Carlson's site is a treasure trove...
While we're on the subject, what are the M-NCPPC Park Police (Montgomery County, MD) unit designators?
I know they use 151.28 as their primary dispatch and I forgot the rest.. just looking for unit numbering and their "Signal" codes If anyone has a link...