The TBR0218LW2 from Narda-MITEQ is a RF Mixer with RF Frequency 2000 to 18000 MHz, LO Frequency 2000 to 18000 MHz, IF Frequency 50 to 3000 MHz, Conversion Loss 6.5 dB, Noise Figure 9.5 dB. Tags: Module with Connectors, Triple Balanced Mixer. More details for TBR0218LW2 can be seen below.