The Springfield near me (MA) changed all of their police communication to encrypted digital. The reason was the gangs were listening to the dispatchers.
It made listening to the scanners pretty boring.
But it’s not something you do “overnight.” It cost a bunch in terms of new radios all around. Plus the transmission equipment (not the radio part, but the part that encrypts everything) cost a bunch.
I guess the folks in OH were motivated….or they got a big grant.
You are out of date.
The old analog radios were replacrd with digital radios years ago most everywhere.
Digital scanners were introduced and sold to the public.
But the consumer digital scanners can not monitor encrypted comms.
And the department radios are controlled. Embedded in the digital signal are control codes that determine if a particular transceiver or group of units will process and deliver the sound.
Remotely blocking units from hearing comms is quickly done using the master control .The individual user can do nothing unauthorized. The system is also dependent on complete signal coverage everywhere through specialized celluar nodes.
Not like the old days when many small departments could hear and instantly communicate withvtheir neighbors. Now they might all be using the same “channel” but can communicate only if their units are enabled.