The STTB-4003 from Crane Aerospace & Electronics is a RF Mixer with RF Frequency 1000 to 10000 MHz, LO Frequency 1000 to 10000 MHz, IF Frequency 5 to 4000 MHz, Conversion Loss 6.5 to 8 dB, LO Drive - Power 10 dBm. Tags: Module with Connectors, Triple Balanced Mixer, Passive Mixer. More details for STTB-4003 can be seen below.