The M9-0540 from Marki Microwave is a RF Mixer with RF Frequency 5000 to 40000 MHz, LO Frequency 5000 to 40000 MHz, IF Frequency DC to 3 GHz, Conversion Loss 7 dB, LO/RF Isolation 25 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for M9-0540 can be seen below.