The M2-0440 from Marki Microwave is a RF Mixer with RF Frequency 4000 to 40000 MHz, LO Frequency 4000 to 40000 MHz, IF Frequency .5 to 20 GHz, Conversion Loss 10 dB, LO/RF Isolation 25 dB. Tags: Module with Connectors, Triple Balanced Mixer. More details for M2-0440 can be seen below.