What amp would you recommend? I can pull in 38 to 41 channels from OKC. As the crow flies, I am 80-90 miles away. I would like to be able to pull in channel 43. Thanks!Very true. There is a measurement of signal vs noise, its called Signal to Noise Ratio, or SNR. On digital anything over 32 dB is good and anything over 38 is perfect. You can have a weak signal but as long as the ambient noise is low, it won't make a difference.
That being said, using an antenna that is tuned to UHF will get you a better signal. So if you have an old antenna or rabbit ears and a few channels will pixel now and then, getting a UHF only tuned antenna can clear that up. Now if you are going to split that signal for multiple tv's I would recommend throwing in an amp anyways.