Satellite TV Signal Amplifier Signal Booster Dish Network Antenna Of 20dB This signal amplifier works with every satellite system In the market Perfect for all satellite applications. Dimension: 80mm x 30mm x 19mm(L x W x H) This is a high quality inline amplifier with up to 20dB gain. This amplifier is DC passive. For long satellite cable runs and improvement of satellite signal strength. No need for separate power supply. 100% Brand New.