The M2-0243 from Marki Microwave is a RF Mixer with RF Frequency 2000 to 43000 MHz, LO Frequency 2000 to 43000 MHz, IF Frequency .4 to 43 GHz, Conversion Loss 10 dB, LO/RF Isolation 30 dB. Tags: Module with Connectors, Triple Balanced Mixer. More details for M2-0243 can be seen below.