The PE88X2021 from Pasternack Enterprises Inc is a Frequency Multiplier with Input Frequency 13.5 to 40 GHz, Output Frequency 26.5 to 40 GHz, Input Power 4 to 10 dBm, Output Power 22 dBm, Harmonics -15 dBc. Tags: Waveguide, Active, Waveguide Multiplier. More details for PE88X2021 can be seen below.