The FMMU1004 from Fairview Microwave is a Waveguide Mixer with RF Frequency 33 to 50 GHz, LO Frequency 33 to 50 GHz, IF Frequency DC to 18 GHz, Conversion Loss 6.5 dB, LO Drive Level 13 to 15 dBm. Tags: Balanced Mixer, Up Converter Mixer. More details for FMMU1004 can be seen below.