The FDB-19-01 from Ducommun is a Waveguide Mixer with RF Frequency 40 to 60 GHz, LO Frequency 40 to 60 GHz, IF Frequency DC to 18 GHz, Conversion Loss 7.5 dB, LO Drive Level 10 to 13 dBm. Tags: Balanced Mixer. More details for FDB-19-01 can be seen below.