The SFS-19-N1 from ERAVANT is a RF Mixer with RF Frequency 40 to 60 GHz, LO Frequency 20 to 30 GHz, IF Frequency DC to 5 GHz, Conversion Loss 14 dB, LO Drive - Power 10 to 15 dBm. Tags: Module with Connectors, Sub-Harmonic Mixer. More details for SFS-19-N1 can be seen below.