The IRM290-650 from Sirius Microwave is a RF Mixer with RF Frequency 290 to 650 MHz, LO Frequency 440 to 500 MHz, IF Frequency 20 to 150 MHz, Image Rejection 30 dB, Conversion Loss 7.5 dB. Tags: Module with Connectors, Image Reject Mixer. More details for IRM290-650 can be seen below.