The 500T8G18M4 from AR RF/Microwave Instrumentation is a RF Amplifier with Frequency 7.5 to 18 GHz, Gain 57 dB, Gain Flatness ±11 dB, P1dB 0 to 50.97 dBm, P1dB 125 W. Tags: Travelling Wave Tube Amplifier. More details for 500T8G18M4 can be seen below.