Ematic EDT201ANT Ultra-Thin Indoor HDTV Antenna with Amplifier 50-Mile Range, Black Ultra-thin indoor HDTV antenna with amplifier 50-mile range, black Receives free broadcast HD TV signals with enhanced gain, range and frequency performance and the amplifier will enhance the performance of passive antennas in challenging areas of reception Connect the cable of the antenna to input jack of the amplifier, then connect the amplifier's built-in cable to the antenna input on your TV/converter box and it will amplify the signal by 20 miles