Damariscotta police operates on the countywide DMR Law system.
Damariscotta fire is dispatched on County fire and swaps to an assigned county fire ops channel or mutual aid channel depending on location of the call.
Damariscotta does not have its own EMS. They contract with CLC ambulance, which is dispatched on their own private channel.
The database has all these frequencies, but here is the down and dirty:
LCFire 155.98500 pl 118.8
LC Tac 1 154.1300 pl 127.3
LC Tac 2 153.7925 d152n
LC Tac 3 159.1275 d152n
LCLaw 154.04750 CC5 / TG 882 / SL 1
CLC EMS 159.75000 pl 127.3