I got a note from a friend near Raleigh, NC yesterday letting me know that it appears Echostar is running a channel 56 transmitter there with a still "Dish" graphic on it. I got him to send me a transport stream capture and, sure enough, it's running Mobile DTV. Here's what's on it, according to the channel labels:
Plus ESG (Electronic Service Guide) data. It looks like on 1/31 Echostar notified the FCC that it would be adding transmitters in several locations. I will be adding them to the Echostar page under Discontinued Services (which I will soon have to move to "Active Services" it seems). Those locations are:
Ann Arbor, MI
Mount Pleasant, PA
West Bend, WI
I can't figure out what the pattern is there, if any. If anyone else has any ideas, please let me know.