The NJR2937E from Nisshinbo Micro Devices Inc. is a Low Noise Block with RF/Input Frequency 10.95 to 11.70GHz, Output Frequency 950 MHz to 1.7 GHz, LO Frequency 10 GHz, Gain 55 to 60 dB, External Reference 10 MHz. More details for NJR2937E can be seen below.