The IRM3570B from Technology Service Corporation is a RF Mixer with RF Frequency 10 MHz to 3.5 GHz, LO Frequency 3.5 to 7 GHz, IF Frequency 10 to 90 MHz, Image Rejection 25 to 30 dB, Conversion Loss 8 to 9.5 dB. Tags: Module with Connectors, Image Reject Mixer, I/Q Mixer. More details for IRM3570B can be seen below.