The SM1213 from Sigatek is a RF Mixer with RF Frequency 2000 to 18000 MHz, LO Frequency 2000 to 18000 MHz, IF Frequency 0 to 2000 MHz, Conversion Loss 7.6 dB, LO Drive - Power 13 dBm. Tags: Module with Connectors, Double Balanced Mixer. More details for SM1213 can be seen below.