1byone Amplified Digital Indoor TV Antenna for HDTV, VHF / UHF / FM, Digital Freeview and Analog TV Signals, 28dB Enhance reception by amplifying weak signals with built-in high gain amplifier (28dB gain) and extremely low noise (ELN) circuit. Can stand on table, comes with portable TV antenna stand. Fast and easy set up with 3 steps - Unwrap, Plug it in and Scan channels. Provide you with opportunities to watch crystal clear digital & HD shows! Powered by external power adapter included.\ Channel reception will vary depending on what's being broadcast in your area, how far away you are from broadcast towers, and your surroundings. We do offer a 30 day money back guarantee on all new items in order for you to test the suitability in your area.