The SSB290-650 from Sirius Microwave is a Modulator with RF Frequency 230 to 650 MHz, RF Frequency 230 to 650 MHz, LO Frequency 230 to 650 MHz, IF Frequency 20 to 150 MHz, Conversion Loss 8 dB. Tags: Module with Connectors. More details for SSB290-650 can be seen below.