The GBDKU1011 from GeoSat Microwave is a Low Noise Block with Input RF Frequency 10.7 to 11.8 GHz, Output RF Frequency 950 MHz to 2.05 GHz, LO Frequency 9.75 GHz, Gain 17 to 23 dB, Gain Flatness 4 to 5 dB. More details for GBDKU1011 can be seen below.