The QM2-18-0.03-4 from Qualink Microwave is a RF Mixer with RF Frequency 30 MHz to 4 GHz, LO Frequency 2 to 18 GHz, IF Frequency 30 MHz to 4 GHz, Conversion Loss 7.5 dB, IP3 19 dBm. Tags: Module with Connectors. More details for QM2-18-0.03-4 can be seen below.