This 1 In 8 Out Indoor Amplifier by Digiwave® helps enhance the performance of all passive indoor antennas. It was engineered specifically for digital signals but it also supports analog signals. If your antenna is in a quirky or challenging area, this product will easily transmit a signal that’s crisp and clear. Designed for CATV indoor use and meet multi-user Aluminum die-cast housing, fast heat-sinking With gain adjustable functions manually All ports F female connector 75Ohm Easy to use Digiwave Indoor TV Amplifier