The M9H-3740 from Marki Microwave is a RF Mixer with RF Frequency 37000 to 40000 MHz, LO Frequency 11500 to 14000 MHz, IF Frequency DC to 3.5 GHz, Conversion Loss 12.5 dB, LO/RF Isolation 30 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for M9H-3740 can be seen below.