This amplifier can make your TV antenna channels, improve the clarity of the frequency, eand the receiving range.< />The number of channels you can receive is determined by what's being oadcast in your area.< />Channel reception is dependent upon distance from oadcast towers, terrain, surroundings, and weather. Check out what channels are available in your area first and how many you are to receive.< />If your TV picture is not , or you cannot receive the weak signals from far towers, use this amplifier to boost the weakened signals.< />We do not recommend using this amplifier if your house is y close to the oadcast tower and the signal is already y strong.The amplifier may cause self-oscillations and result in fewer signals received.< />< />Specification< />Name: TV Antenna Amplifier< />Material: ABS< />Color:Black< />Frequency: 45-862 MHz< />Cable Length: about 80cm / 31.50in< />LNA Gain: 25dB< />Output Degree: 100dBuV< />Noise Parent: Less than 4dB< />Energy Supply: DC 6V 100mA by ouide adapter or DC 5V from USB source.< />Works with any non-amplified / passive television antennas.< />< />Package Conten:< />1 x TV Antenna Amplifier< />1 x IEC connor< />1 x Usermanual< />< />Only the above package content, other produc are not included.< />Note: Light ing and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.