The MXR-42T from RF Bay is a RF Mixer with LO Frequency 800 MHz to 4.2 GHz, IF Frequency DC to 800 MHz, Conversion Loss 9 to 10.8 dB, LO Drive - Power 13 dBm, P1dB 9 dBm. Tags: Module with Connectors, Double Balanced Mixer. More details for MXR-42T can be seen below.