Arlington Mass police do use encryption at times

[zerg901]

Listening to the Arlington police on 471.1625R encryption is heard once in a while. But 99% of their comms are in the clear.

 

[Whiskey3JMC]

Assuming you're referring to the digital ops channel listed here you might want to submit a database update requesting a mode change from P25 to P25e (small "e" denoting partial encryption)