This amplifier can enhance your TV antenna's performance by improving signal clarity and expanding the receiving range. The number of channels you can receive depends on local broadcast availability, distance from transmission towers, terrain, surrounding structures, and weather conditions. Check which channels are available in your area and how many you currently receive. If your TV picture is not clear or you're unable to pick up weak signals from distant towers, this amplifier can help boost those signals. We do not recommend using this amplifier if you are very close to broadcast towers, as strong existing signals may cause interference or oscillation, potentially reducing reception quality. Name: HDTV Antenna Amplifier Material: ABS Color: Black Frequency Range: 45-862 MHz Cable Length: Approximately 80cm / 31.5 inches LNA Gain: 25dB Output Level: 100dBuV Noise Figure: Less than 4dB Power Supply: DC 6V 100mA via external adapter or DC 5V from a USB source Compatible with any non-amplified or passive television antennas Package List: 1 x HDTV Antenna Amplifier Note: The package includes only the items listed above; other accessories are not included. Note: Lighting and display settings may cause slight color variations between the product image and the actual item. Measurement error is +/- 1-3cm.