The HTH9G09P551S from Watech Electronics is a RF Amplifier with Frequency 0.3 to 0.96 GHz, Gain 18.9 to 19.8 dB, Output Power 57.4 dBm, Output Power 550 W, Saturated Power 57.40 dBm. Tags: Surface Mount, Power Amplifier. More details for HTH9G09P551S can be seen below.