The NJR2934EN from Nisshinbo Micro Devices Inc. is a Low Noise Block with RF/Input Frequency 12.20 to 12.75 GHz, Output Frequency 950 MHz to 1.5 GHz, LO Frequency 11.25 GHz, Gain 55 to 60 dB, External Reference 10 MHz. More details for NJR2934EN can be seen below.