As the various posts in southwestern Ohio join MARCS I find that
aircraft speed enforcement uses the post TAC talkgroup in the area they
are working. In areas where the post is still using VHF they use the
lowband TAC channels.
In Gallia County, when the OSP plane is here and they're working "traffic" on US35, they frequently use 154.68, 45.10. Thanks for the info you added, I'll tune those in too... Also, FYI, Post 27 is up and running now with their MARCS equipment. Thanks, Steve