Based on your zip code, you are pretty far from everything: it's not reasonable to expect regular digital reception more than 65 miles from the transmitters, and most of the stations, other than Chattanooga, are too far away to receive reliably. Your zip code doesn't tell me if you are on top of a hill, or in a valley, so your reception can vary from what your zip code information tells me, but I would think that you need to take extreme deep-fringe measures to insure reliable reception at your location.
My prescription for deep-fringe reception is as follows: A Winegard YA-1713 VHF-high band yagi mounted on a mast on your roof as high as you can manage. Mount an AntennasDirect XG-91 4' above the YA-1713, and mount the two antenna on a Channel Master 9521a rotator. Combine the two antenna's signals into a Channel Master Titan 7777 preamplifier, and run the output of the preamplifier via coaxial cable to your TV tuner, or to a high-quality 1 gHz or beter splitter, then distribute the signals to your TV sets. This rig is about as good as it gets for normal TV reception, but I can't promise you everything without knowing your specific location.
http://www.channelmaster.comhttp://www.winegard.comhttp://www.antennasdirect.comhttp://www.pctinternational.com/channel ... lation.pdf