It's been my experience that reception can vary greatly even in the same campground. We've been parked in different places in the same state park and get varying reception. 1 channel here and 9 channels over there.
IMO digital broadcasting is the worst thing ever to happen to camping television.
@Dodge Guy... One of the new Jack Antennas came on our camper when we bought it. We can get 25 channels parked in our back yard and get the above results when camping. It all depends where you are as to what kind of reception you'll get.