I'll just add that I had great reception with the ole bat wing....until they went digital. And what I finally found out is it was NOT the antenna.
I bought a new flat screen when they went digital. Way less channels than the old analog TV. Thought that was what was to be expected w/digital.
Then I bought a second flat screen for the RV. THAT TV got 10 more channels than the other one. :? Parked in the same spot each TV got different reception.
Talked to fellow campers and different brand TV's have different circuit boards for the antenna, i.e. different reception.
The second TV I bought is a real small Vizio and it gets 10 more channels sitting inside the same RV as the other one.