The M8-0420 from Marki Microwave is a RF Mixer with RF Frequency 4000 to 20000 MHz, LO Frequency 4000 to 20000 MHz, IF Frequency DC to 2 GHz, Conversion Loss 5.5 dB, LO/RF Isolation 40 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for M8-0420 can be seen below.