The HDB91X is a really good UHF antenna. I have one in a indoor storage room aiming at Southfield, MI area, where most of our DTV transmitters are located. Distance is about 25 miles. Pulls all of the UHF solid as a rock including our Ion affiliate which is on lower power leading up to repack.If your transmitters are all in one direction, then a very directional antenna should cut down on multipath. This is the one I bought: Xtreme Signal 70 Mile VHF/UHF Yagi Outdoor TV Antenna (HDB91X) from Solid Signal although it's not as directional as I had wanted. Specs say beam width 60 deg.