The SFP-283SF-U9 from ERAVANT is a Frequency Multiplier with Input Frequency 8.37 to 13.33 GHz, Output Frequency 26.5 to 40 GHz, Input Power 20 dBm, Harmonics 20 dBc, Frequnecy 8.37 to 13.33 GHz. Tags: Module with Connectors, Waveguide, Passive, Waveguide Multiplier. More details for SFP-283SF-U9 can be seen below.