The ERZ-HPA-2300-2800-21 from ERZIA is a RF Amplifier with Frequency 5.7 to 5.9 GHz, Gain 15.5 to 16.5 dB, Output Power 21.8 to 22.2 dBm, Output Power 0.15 to 0.17 W, Saturated Power 21.8 to 22.2 dBm. Tags: Power Amplifier. More details for ERZ-HPA-2300-2800-21 can be seen below.