The SFS-28-N1 from ERAVANT is a RF Mixer with RF Frequency 26.5 to 40 GHz, LO Frequency 12.25 to 20 GHz, IF Frequency DC to 5 GHz, Conversion Loss 13 dB, LO Drive - Power 10 to 15 dBm. Tags: Module with Connectors, Sub-Harmonic Mixer. More details for SFS-28-N1 can be seen below.