The M4-0226 from Marki Microwave is a RF Mixer with RF Frequency 2000 to 26500 MHz, LO Frequency 2000 to 26500 MHz, IF Frequency DC to 700 MHz, Conversion Loss 7.5 dB, LO/RF Isolation 30 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for M4-0226 can be seen below.