The SFP-222KF-S1 from ERAVANT is a Frequency Multiplier with Input Frequency 16.5 to 25 GHz, Output Frequency 33 to 50 GHz, Input Power 20 dBm, Harmonics 20 dB, Frequnecy 16.5 to 25 GHz. Tags: Module with Connectors, Waveguide, Passive, Waveguide Multiplier. More details for SFP-222KF-S1 can be seen below.