Thanks for the input. I surmise that the NBC station from Tucson or Phoenix has a repeater 10 to 15 miles from Sierra Vista and they must have four sub channels.. thanks again for the input.

We used our antenna and did pick up a few channels.

Brother, can't answer for the local channels. we use DirecTV Satellite. I did see a number of other RV's have their TV antenna's up....so, there must be something..

My camper has a booster built in so when I turned it on I got 5 channels crystal clear. Without the booster on, I couldn’t get much very clear.

I've read about 5 crystal clear, over the air. I only stayed a nite, so didn't watch tv, cable or otherwise. I'd suggest calling them @ 520-456-9301