The DMF-4A-250 from Crane Aerospace & Electronics is a RF Mixer with RF Frequency 0.5 to 500 MHz, LO Frequency 0.5 to 500 MHz, IF Frequency DC to 500 MHz, Conversion Loss 6 to 8 dB, LO Drive - Power 13 dBm. Tags: Flatpack, Double Balanced Mixer, Passive Mixer. More details for DMF-4A-250 can be seen below.