The WR4.3SHM from Virginia Diodes, Inc. is a Waveguide Mixer with RF Frequency 170 to 260 GHz, LO Frequency 85 to 130 GHz, IF Frequency 36 GHz, Conversion Loss 8 dB, LO Drive Level 3 to 6 dBm. Tags: Sub-Harmonic Mixer. More details for WR4.3SHM can be seen below.