The DB1826LW1 from Narda-MITEQ is a RF Mixer with RF Frequency 18000 to 26000 MHz, LO Frequency 18000 to 26000 MHz, IF Frequency 0 to 2000 MHz, Conversion Loss 7.5 dB, Noise Figure 10.5 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for DB1826LW1 can be seen below.