HIDB Indoor TV Antenna Amplifier, 25dB High Gain Amplifier, Low Noise/Clears Up Pixelated Amplifier Signal Booster, Adjustable dBTimer, USB Cable Power Supply (White.

, Product Specification: HDTV Antenna amplifier is a perfect accessory to boost signal for your passive antennas. Boost any nonamplified TV antenna up to 50 miles range,and enhance weak/moderate signals by obstructions between you and local DTV stations. Frequency Range: VHL(174230MHz;UHF(470862MHzMax Gain: 25dB 2. 9ft (1MUSB Cable Power Supply: DC 5V 100mA by external adapter or DC 5V from USB source Works with any nonamplified indoor tv antennas(Portable TV Antenna Please Note : 1. Work together with any kind of passive antenna,then the nonamplified aerial( will outperform a 50 mile amplified antenna by leaps and bounds;BUT cannot work with antennas which already has a builtin amplifier 2,We DO NOT recommend to use this amplifier/booster if your house is very close to the broadcast tower and where the signals are already very strong,reception can be impeded by strong signalsoverload,because the amplifier will boost the strong signals too. 3,This signal booster CAN amplify the range by 80 miles away and boost the weak signals for an unamplified antenna,but CANT create new signals. 4, If this AMP unit doesnt work,pls kindly check if the LED light is up when power on. How To Connect With a Passive Antenna. 1,Screw the amplifier/booster into the F type cable of the nonamplified antenna; 2,Connect the F type cable of the amplifier to the ANT IN of HDTVs or Digital STB; 3,Plug USB cable into HDTVs USB port or YOUR OWN power adaptor/wall charger;.