154.2650 dispatches some stations in Roscommon maybe st 1 not sure but data shows it as Big Creek Twp in Oscoda Co? it maybe a Ch 2 for Big Creek not main channel, another mistake?
I put 152.265 in my scanner today. Getting some scratchy pages with a PL of 103.5 which matches the database for Kalkaska County Fire dispatch. I also heard the same page on MPSCS group 5344 which is Kalkaska Fire Dispatch.
Station 1, Roscommon County is Denton Twp which is the SE corner of Houghton Lake so that does not make sense at all.
Station 1, Crawford County is Frederic Township. Frederic provides EMS service into Kalkaska County. Could this be what you are hearing?