I've had this amp 7 months, and have experienced good performance in a fringe area about 58 miles from most of the towers. Early on I tried it with a different power supply and inserter than what came with it, and got better results. The amp seems to be UHF only, as I don't get any trace of my VHF channel when I input a combined signal. So, recently I switched to a Kitztech KT-200 which can handle both UHF and VHF. The 28dB Antra is also not quite as good as the ultra-low-noise 24dB Kitztech on my weakest UHF channel, which is TROPO with NM=-19. During the summer, the Antra helped receive the station about 18-20 hours a day, but for a time the Kitztech had it all 24 hours. I briefly compared the Antra to the new single-input 30dB Channel Master 7777, found little difference, and thus sent the more expensive 7777 back. (By the way, all of these amps, as well as the RCA TVPRAMP1R, work much better than my Channel Master CM 3412 distribution amp when it's used by itself - yet that might not be true for every situation, like perhaps someone 30 miles out.) Currently, the Antra is installed at a second location, 55 miles out, but with easier NM levels to deal with, and it gets everything with no problems there, as do the other amps (except the 3412). Antennas I've used the Antra successfully with include the DB4e, HD-8800, HD-9022, and a homemade 8-bay.