The M9-0444 from Marki Microwave is a RF Mixer with RF Frequency 4000 to 44000 MHz, LO Frequency 4000 to 44000 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 M9-0444 can be seen below.