The SSB0550A from Technology Service Corporation is a RF Mixer with RF Frequency 10 MHz to 5 GHz, LO Frequency 500 MHz to 5 GHz, IF Frequency 10 to 90 MHz, Conversion Loss 4 to 6 dB, LO Drive - Power 4 to 7 dBm. Tags: Module with Connectors, Single Sideband Mixer. More details for SSB0550A can be seen below.