The M4-0165 from Marki Microwave is a RF Mixer with RF Frequency 1000 to 65000 MHz, LO Frequency 1000 to 65000 MHz, IF Frequency DC to 400 MHz, Conversion Loss 9.5 dB, LO/RF Isolation 27 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for M4-0165 can be seen below.