The 20/20S1G11 from AR RF/Microwave Instrumentation is a RF Amplifier with Frequency 700 MHz to 4.2 GHz, Gain 43 dB, Gain Flatness ±2 dB, Noise Figure 10 dB, Output Power 42.55 to 43.42 dBm. Tags: Power Amplifier. More details for 20/20S1G11 can be seen below.