The GXR-19 from RF Bay is a RF Mixer with LO Frequency 16 to 26 GHz, IF Frequency DC to 9 GHz, Conversion Loss 7 to 9 dB, LO Drive - Power 13 dBm, P1dB 10 dBm. Tags: Module with Connectors, Double Balanced Mixer. More details for GXR-19 can be seen below.