The HM3708 from HASCO Components is a RF Mixer with RF Frequency DC to 41 GHz, LO Frequency 23 to 41 GHz, IF Frequency DC to 18 GHz, Conversion Loss 10 to 15 dB, Noise Figure 0.5 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for HM3708 can be seen below.