The MMP20281 from Teledyne Defense Electronics is a Space Qualified RF Mixer with RF Frequency 1 MHz to 20 GHz, LO Frequency 2 to 20 GHz, IF Frequency 1 MHz to 6 GHz, Conversion Loss 6 to 8.5 dB, Noise Figure 6 to 9.5 dB. Tags: Module with Connectors, Triple Balanced Mixer. More details for MMP20281 can be seen below.