The M4-0040 from Marki Microwave is a RF Mixer with RF Frequency 500 to 40000 MHz, LO Frequency 500 to 40000 MHz, IF Frequency DC to 400 MHz, Conversion Loss 8 dB, LO/RF Isolation 28 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for M4-0040 can be seen below.