I have a bat wing on the roof, with a boost inside the coach. It kinda works, but not all that great. Also have a satellite on the roof that does nothing & nobody around here knows anything about it...
When it comes to Over the Air TV... Where you are parked makes a BIG difference.. When I lived in Detroit from the roof of my house I could see the tower lights on several transmission towers.
Where I am parked here in GA 60 miles away.. The batwing, with wingman, and Sensar Pro is what it takes. (Watching as I type)
At my parent's house I hit towers 100 miles away (100' tower and Channel Master's biggest and bestest on top with the optional mast head amplifier)