I fell up on this website. TV Fool
You plug in the location (GPS or street address) you'll be camping and it gives you a list of area TV stations, their relative signal strength and their direction (azmuth).
Print out the report and put your trusty Boy Scout compass to work finding a good starting point to direct your Wingman.
Wright Ellis and Penny Sedgley
'10 Tundra 4X4
SOB -'14 Rockwood 2604WS (Rocky
"Life is a cruel teacher. She gives the test first; the lesson then follows."