The HM3808 from HASCO Components is a RF Mixer with RF Frequency DC to 38 GHz, LO Frequency 20 to 40 GHz, IF Frequency DC to 20 GHz, Conversion Loss 10 to 15 dB, Noise Figure 0.5 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for HM3808 can be seen below.