The M9-1840 from Marki Microwave is a RF Mixer with RF Frequency 18000 to 40000 MHz, LO Frequency 35500 to 42200 MHz, IF Frequency 2 to 18 GHz, Conversion Loss 11 dB, LO/RF Isolation 25 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for M9-1840 can be seen below.