The TBR0440LW1 from Narda-MITEQ is a RF Mixer with RF Frequency 4000 to 40000 MHz, LO Frequency 4000 to 40000 MHz, IF Frequency 50 to 3000 MHz, Conversion Loss 8 dB, Noise Figure 10.5 dB. Tags: Module with Connectors, Triple Balanced Mixer. More details for TBR0440LW1 can be seen below.