TV Antenna, AVANTEK AR-F15 Amplified Digital Indoor HDTV Antenna with 50-Mile Range Signal Booster Picks up and amplifies over-the-air digital TV signals from nearby broadcast towers within a range of 50 miles, allowing you to watch your favorite shows in full 1080p HD for FREE Features a built-in high gain, low noise amplifier with a fine-tuning knob to ensure stunning picture quality and sound reception; supports both UHF and VHF bands Can be installed in 3 simple steps: Connect the antenna using the AC adapter, adjust the fine-tuning knob to get the best reception and scan for channels on your TV to start enjoying local and national programs Features an ultra-slim, foldable design with an adjustable loop aerial, extendable rods, fine-tuning knob and 5-foot coaxial cable NOTE: In case you are not receiving specific channels or the reception is poor, it might be because the TV may not be in the correct mode and not scanning the channels correctly or there may be an obstruction between the antenna and the broadcast signal. To fix these issues, try re-positioning the antenna and re-scanning for the channels. Placing the antenna higher or closer to a window will improve the reception of the broadcast signals. Please ensure that your TV have a built-in digital tuner or the set-top box support digital HD tuning. To verify it, please check the TV or STB user manual.