ขาย อะแดปเตอร์เสาอากาศขยายสัญญาณเสียงรบกวนต่ํา Hdtv Booster ราคาที่ดีที่สุด

** Welcome to Sthouse! Please look carefully at the product details before ordering. If you have any questions, please ask customer service (Monday-Friday, 9am-6pm), I hope to bring you a good shopping experience! High Gain Low Noise HDTV TV Antenna Amplifier Signal Booster Antenna Adapter Features:  1. This amplifier can make your TV antenna get more channels, improve the clarity of the frequency, expand the receiving range.  2. The number of channels you can receive is determined by what's being broadcast in your area.  3. Channel reception is dependent upon distance from broadcast towers, terrain, surroundings, and weather.  4. Check out what channels are available in your area first and how many you are able to receive.  5. If your TV picture is not crystal clear, or you cannot receive the weak signals from far away towers, use this amplifier to boost the weakened 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 result in fewer signals received.    Specifications:  Name: HDTV Antenna Amplifier  Material: ABS  Frequency: 45-862 MHz  Cable Length: about 65cm LNA Gain: 25dB  Output Degree: 100dBuV  Noise Parent: Less than 4dB  Energy Supply: DC 6V 100mA by outside adapter or DC 5V from USB source.  Works with any non-amplified / passive television antennas. Included: 1 x HDTV Antenna Amplifier