The GBDKU1112U25 from GeoSat Microwave is a Low Noise Block with Input RF Frequency 11.7 to 12.75 GHz, Output RF Frequency 950 MHz to 2 GHz, LO Frequency 10.75 GHz, LO Stability ±25 kHz, Gain 17 to 23 dB. More details for GBDKU1112U25 can be seen below.