The GXR-2 from RF Bay is a RF Mixer with LO Frequency 3 to 10 GHz, IF Frequency DC to 4 GHz, Conversion Loss 9 to 12 dB, LO Drive - Power 17 dBm, P1dB 15 dBm. Tags: Module with Connectors, Double Balanced Mixer. More details for GXR-2 can be seen below.