The MLA20RPDC GPS Line Amplifier is a one input,one output device with a 20dB min. gain in a miniaturized housing.The frequency response covers the GPS L1, L2 and GLONASS bands with excellent gain flatness.In the normal configuration, the RF output (J1) passes DC from the connected GPS receiver through the amplifier to the antenna,allowing the GPS receiver to power both the antenna and the amp.