The GXR-18 from RF Bay is a RF Mixer with LO Frequency 11 to 22 GHz, IF Frequency DC to 6 GHz, Conversion Loss 6 to 10 dB, LO Drive - Power 13 dBm, P1dB 9 dBm. Tags: Module with Connectors, Double Balanced Mixer. More details for GXR-18 can be seen below.