The DM0204MA1 from Narda-MITEQ is a RF Mixer with RF Frequency 2000 to 4000 MHz, LO Frequency 2000 to 4000 MHz, IF Frequency 0 to 1000 MHz, Conversion Loss 5.5 dB, Noise Figure 6 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for DM0204MA1 can be seen below.