The NJR2939EN from Nisshinbo Micro Devices Inc. is a Low Noise Block with RF/Input Frequency 11.20 to 11.70 GHz, Output Frequency 950 MHz to 1.45 GHz, LO Frequency 10.25 GHz, Gain 55 to 60 dB, External Reference 10 MHz. More details for NJR2939EN can be seen below.