The TBR0058MA1 from Narda-MITEQ is a RF Mixer with RF Frequency 0.5 to 8 GHz, LO Frequency 0.5 to 8 GHz, IF Frequency 0.05 to 3 GHz, Conversion Loss 11.5 to 14.5 dB, Noise Figure 11.5 dB. Tags: Module with Connectors, Triple Balanced Mixer. More details for TBR0058MA1 can be seen below.