The 75A400 from AR RF/Microwave Instrumentation is a RF Amplifier with Frequency 10 kHz to 400 MHz, Gain 49 dB, Gain Flatness ±1.5 dB, Output Power 46.99 to 48.75 dBm, Output Power 50 to 74.99 W. Tags: Power Amplifier. More details for 75A400 can be seen below.