The SM1613 from Sigatek is a RF Mixer with RF Frequency 4000 to 12400 MHz, LO Frequency 4000 to 12400 MHz, IF Frequency 0 to 2000 MHz, Conversion Loss 7 dB, LO Drive - Power 13 dBm. Tags: Module with Connectors, Double Balanced Mixer. More details for SM1613 can be seen below.