We have used "rabbit ears" stuck into a weighted thingie, set on the LP tanks. The flat wire is converted to cable wire and is screwed onto the exterior TV jack. Not nearly as sophisticated as the other guy's but, eh, it worked for us in that camping location.
Deb & Gary
2007 Ford E150 cargo van, 2012 Rockwood Premier A126
Everybody needs beauty as well as bread, places to play in and pray in, where Nature may heal and cheer and give strength to body and soul alike._ John Muir