Right, I remember the area well (My grandparents lived in Frederic). That whole area of Grayling/Roscommon/Houghton Lake/West Branch all have their own lineup. It's an odd thing, but maybe that's because all four are at the edge of both Traverse City/Cadillac DMA and Tri-Cities DMA? I remember whatever channel WLLZ was (I think 12?) in Houghton Lake used to automatically flip to WPBN signal when WLLZ was lost. No clue why it was setup that way.
Speaking of Grayling.... is Parish Communications still around?