The J2040M from Eclipse MDI is a RF Mixer with RF Frequency 2 to 4 GHz, LO Frequency 2 to 4 GHz, IF Frequency DC to 1 GHz, Conversion Loss 4.5 to 7 dB, LO Drive - Power 7 to 13 dBm. Tags: Module with Connectors, Double Balanced Mixer, Down-Conversion Mixer. More details for J2040M can be seen below.