The RAL4-30-X-X from Rover Instruments is a SATCOM Amplifier System with Frequency 700 MHz to 3 GHz, Small Signal Gain 0 to 28 dB, Noise Figure 7 dB, Power 10 dBm, Power 0.01 W. Tags: Rack Mount, Line Amplifier. More details for RAL4-30-X-X can be seen below.