The ASKA's LA-9520 20dB Satellite In-Line Amplifier is used to boost the signal from your satellite dish to your receiver or multiswitch. It's as easy as hooking up the amplifier in-line at the satellite dish or your signal source for an instant 20dB boost. In-line amplifiers are needed when your signal is too weak or for long cable runs over 100'.. This amplifier can be used for signals in the range of 900 to 2400 MHz.