The 500W1000BM4 from AR RF/Microwave Instrumentation is a RF Amplifier with Frequency 80 to 1000 MHz, Gain 57 dB, Gain Flatness ±1.5 dB, Noise Figure 8 dB, Output Power 56.53 to 56.99 dBm. Tags: Power Amplifier. More details for 500W1000BM4 can be seen below.