The SFH-42SFSF-S1 from ERAVANT is a RF Mixer with RF Frequency 18 to 26.5 GHz, LO Frequency 18 to 26.5 GHz, IF Frequency DC to 4 GHz, Conversion Loss 15 dB, LO Drive - Power 13 to 16 dBm. Tags: Module with Connectors, Single Balanced Mixer, Harmonic Mixer. More details for SFH-42SFSF-S1 can be seen below.