HDTV Antenna and Amplifier, Liger 50 Mile Range Ultra-Thin Indoor Antenna with 10ft Coaxial cable Plus Antenna Amplifier, Antenna Booster - Receive HD Television Signals for Free - Includes Stand The amplifier Boost the reception of your digital or analog signal television Receives free broadcast High Definition TV signals with enhanced gain, range and frequency performance and the Amplifier will Enhances the performance of passive antennas in challenging areas of reception Lowest noise figure possible, reception frequency: 470-862MHz. Preserves signal purity with Extremely Low-Noise (ELN) circuitry 50-mile range, includes 10 ft. High Performance Cable Turn a TV with spotty reception into one with crisp and clear reception. No Assembly required. You can find out what available channels are in your area by using this website: dtv.gov/maps 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 TV/ converter box and will amplify the signal by 20 miles