The SPM-04-0001 from Farran is a Waveguide Mixer with RF Frequency 180 to 245 GHz, LO Frequency 90 to 120 GHz, IF Frequency 200 MHz to 4 GHz, Conversion Loss 6 to 8 to dB, LO Drive Level 6 dBm. Tags: Sub-Harmonic Mixer. More details for SPM-04-0001 can be seen below.