The MMC-DBM-0440-25 from Mesa Microwave is a RF Mixer with RF Frequency 4 to 40 GHz, LO Frequency 4 to 40 GHz, IF Frequency DC to 2 GHz, Conversion Loss 10 dB, Noise Figure 9.5 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for MMC-DBM-0440-25 can be seen below.