The 200T18G26z5A from AR RF/Microwave Instrumentation is a RF Amplifier with Frequency 18 to 26.5 GHz, Gain 53 dB, Gain Flatness ±10 dB, Harmonics 20 dBc, AC Voltage 190 to 260 V. Tags: Travelling Wave Tube Amplifier. More details for 200T18G26z5A can be seen below.