The M1-0204 from Marki Microwave is a RF Mixer with RF Frequency 2000 to 4000 MHz, LO Frequency 2000 to 4000 MHz, IF Frequency DC to 2 GHz, Conversion Loss 5 dB, LO/RF Isolation 38 dB. Tags: Surface Mount, Double Balanced Mixer. More details for M1-0204 can be seen below.