Every post or almost every post of the Ohio State Highway Patrol has a dispatch talkgroup and a tactical talkgroup, for example, POST84 and P84TAC. Encryption is optional on POST84 which means that if a trooper needs to say something that needs to be encrypted, then all he/she has to do is switch the radio to secure mode. And all of the radios are programmed to be encrypted automatically on P84TAC, to ensure that no one who isn't supposed to can hear that channel. I like that method the best, but my county's sheriff's office uses full time encryption on their dispatch channel, and my police department was planning to do the same once they upgraded to MARCS, and I wrote a letter asking them to consider doing what OSHP does instead. For some reason, the Monroe County Sheriff's Office has their dispatch consoles encrypted and some of the deputies' radios encrypted, but others in the clear. I'm not sure why it's set up that way, which is what I think you were talking about in your question, and my answer is I'm not really sure.