The SFB-08-E2 from ERAVANT is a Waveguide Mixer with RF Frequency 90 to 140 GHz, LO Frequency 90 to 140 GHz, IF Frequency DC to 20 GHz, Conversion Loss 13 to 15 dB, LO Drive Level 13 dBm. Tags: Balanced Mixer. More details for SFB-08-E2 can be seen below.