The QIQ5.5-7.5-3.5 from Qualink Microwave is a RF Mixer with RF Frequency DC to 3.5 GHz, LO Frequency 5.5 to 7.5 GHz, IF Frequency DC to 3.5 GHz, Image Rejection 40 dBc, Conversion Loss 7.5 dB. Tags: Module with Connectors, I/Q Mixer. More details for QIQ5.5-7.5-3.5 can be seen below.