The SFH-28SFSF-A3 from ERAVANT is a Waveguide Mixer with RF Frequency 26.5 to 40 GHz, LO Frequency 3 to 6.1 GHz, IF Frequency DC to 1.3 GHz, Conversion Loss 30 dB, LO Drive Level 16 to 19 dBm. Tags: Harmonic Mixer, Balanced Mixer. More details for SFH-28SFSF-A3 can be seen below.