This is all I could find. The Potomac Eagle operates on the tracks of the South Branch Valley Railroad. The SBVR had a license for 800 MHz frequencies which has expired. I saw a report that someone said they no longer hear activity..
GB - Business, 806-821/851-866 MHz, Conventional
4 Frequencies for all locations
20 Frequencies per Summary Page
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All Locations 1 - State: WV