PCT 1-PORT BI-DIRECTIONAL CABLE TV HDTV AMPLIFIER SIGNAL BOOSTER WITH PASSIVE RETURN PATH Not For Use With Satellite Tv. Product Is Compatible With Antennas And Cable Tv Only Helps reduce snow and pixilation caused by weak TV signals. May improve HDTV reception. Your experience may vary based on the quality cable TV or antenna input signal Provides 15dB (32x) signal boost. The amplifier should be installed BEFORE splitters and long cable runs for best results. Compatible with all cable TV and over-the-air antenna signals.