The DA1218LR5 from Narda-MITEQ is a RF Mixer with RF Frequency 12000 to 18000 MHz, LO Frequency 12000 to 18000 MHz, IF Frequency 10 to 250 MHz, Conversion Gain 23 dB, Noise Figure 9.5 dB. Tags: Module with Connectors, Double Balanced Mixer. More details for DA1218LR5 can be seen below.