The M12-42 from Spacek Labs is a RF Mixer with RF Frequency 42 GHz, LO Frequency 30 GHz, IF Frequency 12 GHz, Conversion Loss 6.0 / 7.0 dB. Tags: Module with Connectors, Single Balanced Mixer, Single Sideband Mixer, Up-Conversion Mixer, Image Reject Mixer. More details for M12-42 can be seen below.