I bought two of these to run satellite signals to TVs using coax cable. They started out okay, even though the video quality was bad, but developed an awful audio buzz after a year, or so. It got so bad that I stopped using them. I figured the poor audio and video was just the nature of an RF modulator until I purchased the Audiovox version. Now I know I wasted money on Belkin. The Audiovox sound and picture is excellent. I wish I would have purchased them in the first place.