The MX400-1S from R & K Company Limited is a RF Mixer with LO Frequency 3 to 5.5 GHz, IF Frequency DC to 2 GHz, Conversion Loss 8 to 11 dB, LO Drive - Power 20 dBm, P1dB 15 dBm. Tags: Module with Connectors, Double Balanced Mixer. More details for MX400-1S can be seen below.