ViewTV Flat HD Digital Indoor Amplified TV Antenna - 40 Miles Range - Detachable Amplifier Signal Booster - 12ft Coax Cable - Black 40 Miles Range | Receive free digital broadcast High Definition TV signals Detachable Signal Amplifier Super Thin design allows you to place it almost anywhere ( Table, Window, Wall ) Full HDTV Support: 720p, 1080i, 1080p | ATSC Compatible Working Frequency: 174-240 MHz / 470-860 MHz