The TB0440LW1-R from Narda-MITEQ is a RF Mixer with RF Frequency 4000 to 40000 MHz, LO Frequency 4000 to 40000 MHz, IF Frequency 500 to 20000 MHz, Conversion Loss 10 dB, Noise Figure 10.5 dB. Tags: Module with Connectors, Triple Balanced Mixer. More details for TB0440LW1-R can be seen below.