Originally Posted by Lloydg
What I'm sure you have for an antenna is what is called an Omni directional antenna and is "supposed" to pick up stations from all directions without the need to rotate. Well guess what? They don't work very well. As others have said, they replaced the Omni directional with the Jack and I have as well. Suggest you check out the reviews on-line and I think you might too.
Lloydg hit the nail directly on the head. You have one of the new High Definition Omni Directional antennas. As a former USAF radio operator and ham operator I learned early in life that Omni directional antennas receive equally poor in all directions.
I believe manufacturers are using these now to reduce manufacturing costs, the antennas are cheaper and doesn't require a turning mechanism extend into the camper interior.
I replaced my Wineguard Sensor with a King Jack HD directional antenna. I live 9 miles from downtown Cincinnati and a bit farther from Northern KY and get 39 over the air HD channels. The 4 network stations and several public broadcast stations all deliver a stunning HD signal. The drawback here is you must point the antenna in the right direction.
While the old Wineguard antenna worked reasonably well (it was designed before the advent of HDTV) it was not optimized for the new HD frequencies. King Jack and several other HD directional antennas will improve your over-the-air reception provided you are camped at a reasonable distance from the transmitters. When we camp in Eastern KY we get zero TV reception over-the-air.
If you routinely camp near a metro area it might be a worthwhile investment to install (or have installed) a rotating mechanism along with a King Jack style directional antenna. BTW - almost all these antennas have a built in pre-amplifier that requires 12 volts on the coaxial cable to power the pre-amplifier. That's the little red light you see near most RV cable jacks.