The best solution I can think of for you if you want both directions for UHF and VHF to 3 TVs, is UHF and VHF antennas for both directions (or a UHF/VHF combo antenna for each direction) with a preamp for each direction, and two coax lines to each TV.
One coax line will go to the TV antenna input, and the other coax line for the other direction will go to a separate tuner with its output going to the aux input of the TV.
|