The 310A from ACST GmbH is a Waveguide Mixer with RF Frequency 270 to 320 GHz, LO Frequency 135 to 160 GHz, IF Frequency DC to 18 GHz, LO Drive Level 3 to 5 dBm, Input Power -10 dBm. Tags: Down Converter Mixer, Up Converter Mixer. More details for 310A can be seen below.