20 dB In-Line Amplifier Fixed Slope 20dB Satellite Signal Inline Booster Amp LNB Dish TV Video DSS DBS Digital Antenna Coaxial Cable Run Channel Strength, 950-2150 MHz This is a high quality fixed slope in-line signal amplifier 950-2150 MHz line booster amp with up to 20 dB gain For long satellite cable runs. No need for separate power supply. Commercial Grade