The M3743QW1A from Narda-MITEQ is a Space Qualified RF Mixer with RF Frequency DC to 43 GHz, LO Frequency 24 to 37 GHz, IF Frequency DC to 18 GHz, Conversion Loss 8 to 12 dB, Noise Figure 11 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for M3743QW1A can be seen below.