The MX190-1S from R & K Company Limited is a RF Mixer with LO Frequency 5 MHz to 1.5 GHz, IF Frequency DC to 1.5 GHz, Conversion Loss 7 to 10.5 dB, LO Drive - Power 15 dBm, P1dB 9 dBm. Tags: Module with Connectors, Double Balanced Mixer. More details for MX190-1S can be seen below.