The 6900TP2G4 from AR RF/Microwave Instrumentation is a RF Amplifier with Frequency 2 to 4 GHz, Gain 68 dB, Gain Flatness ±8 dB, Harmonics 15 dBc, AC Voltage 360 to 435 V. Tags: Travelling Wave Tube Amplifier. More details for 6900TP2G4 can be seen below.