The SFB-55375307-1519SF-E2 from ERAVANT is a Waveguide Mixer with RF Frequency 55 to 75 GHz, LO Frequency 40 to 60 GHz, IF Frequency DC to 25 GHz, Conversion Loss 8 dB, LO Drive Level 3 dBm. Tags: Balanced Mixer. More details for SFB-55375307-1519SF-E2 can be seen below.