The FDB-28-01 from Ducommun is a Waveguide Mixer with RF Frequency 26.5 to 40 GHz, LO Frequency 26.5 to 40 GHz, IF Frequency DC to 14 GHz, Conversion Loss 6.5 dB, LO Drive Level 10 to 13 dBm. Tags: Balanced Mixer. More details for FDB-28-01 can be seen below.