Mini Digital HD TV Antenna DVB-T DVB-T2 Signal Booster Signal Booster For Indoor Characteristics: 1. This amplifier can make your TV antenna more channels, improve the frequency clarity, widen the reception range. 2. The number of channels you can receive is determined by what is broadcast in your area. 3. Channel reception depends on the distance from broadcast towers, terrain, surroundings and weather. 4. First check what channels are available in your area and how much you are able to receive. 5. If your TV picture is not clear, or if you cannot receive weak signals from distant towers, use this amplifier to stimulate weak signals. 6. We do not recommend using this amplifier if your house is very close to the broadcast tower and the signal is already very strong. the amplifier may cause self-oscillations and cause fewer received signals. Specifications: Name: HDTV antenna amplifier Material: ABS Frequency: 45-862 MHz Cable length: about 80cm / 31.50in LNA Gain: 25dB Output level: 100 dBuV Noise parent: less than 4dB Power supply: DC 6 V 100mA by external adapter or DC 5 V from USB source. Works with all non-amplified / passive TV antennas. Package list: 1 x HDTV antenna amplifier