The M4-0020 from Marki Microwave is a RF Mixer with RF Frequency 500 to 20000 MHz, LO Frequency 500 to 20000 MHz, IF Frequency DC to 300 MHz, Conversion Loss 7 dB, LO/RF Isolation 30 dB. Tags: Surface Mount, Double Balanced Mixer. More details for M4-0020 can be seen below.