The CHA6558-99F from United Monolithic Semiconductors is a RF Amplifier with Frequency 28 to 32 GHz, Small Signal Gain 21 dB pk-pk, Output Power 33.2 to 33.4 dBm, Output Power 2.09 to 2.19 W, P1dB 33.2 dBm. Tags: Power Amplifier. More details for CHA6558-99F can be seen below.