As far as TGs not in the database
DC MPD UHF system
34000/34003 -Last night and today, traffic and pedestrian control. Patched to 159.15.
33680 -More traffic control
32944 -unknown
28848 -unknown
27184 -uknown
24656 -unknown
22800 -unknown
20400 -unknown
16384 -Unit 1031
34000 was the most active of these. I always have a weak signal so I didn't spend too much time following the system. I listened to milair instead.
I also searched the DOD UHF system
http://www.radioreference.com/modules.php?name=TRSDB&sid=180
and came up with TG 8864, references to aid stations.
I also had a hit on 40112.
On the other federal UHF system
http://www.radioreference.com/modules.php?name=TRSDB&sid=3611
TGs 432, 448, 448, 58444, and radio IDs of 703005 and 700120.
Everything was encrypted.
In the DB but interesting:
Fairfax County was using their Coordination 1 channel TG 21200 patched to the Park Police.