The SPM-03-0001 from Farran is a Waveguide Mixer with RF Frequency 280 to 300 GHz, LO Frequency 140 GHz, IF Frequency 200 MHz to 4 GHz, Conversion Loss 7 to 10 to dB, LO Drive Level 6 dBm. Tags: Sub-Harmonic Mixer. More details for SPM-03-0001 can be seen below.