The 300TR2z5G7z5 from AR RF/Microwave Instrumentation is a RF Amplifier with Frequency 2.5 to 7.5 GHz, Gain 55 dB, Gain Flatness ±12 dB, Harmonics 3 dBc, AC Voltage 190 to 260 V. Tags: Travelling Wave Tube Amplifier. More details for 300TR2z5G7z5 can be seen below.