Post 57 covers Montgomery County (Dayton).
Post 55 covers Miami and Shelby Counties (Piqua and Sidney)
Post 6 covers Auglaize County (Wapakoneta)
Post 48 covers Toledo.
There is no OSP MARCS activity north of Auglaize County until
you get to Toledo. Post 2 Lima (Allen County) is on VHF.
Fostoria lies on the edge of Seneca and Hancock Counties.
Seneca is covered by Post 72 Fremont and they are on MARCS.
Post 32 Findlay covers Hancock County and they are still using VHF.
The OSP page here on rr.com states that Defiance is on MARCS,
but I never heard a peep on MARCS when I was in Deshler two weeks ago.
I-80 the Turnpike is not on MARCS and will not be joining MARCS, they still
use VHF. You can go to the OSP page
http://www.radioreference.com/modules.php?name=RR&aid=670
for the VHF frequencies and the MARCS pages for the Posts' talkgroups.
Mark