The NJR2843L from Nisshinbo Micro Devices Inc. is a Low Noise Block with RF/Input Frequency Low Band:10.7 to 11.7 GHz, High Band:11.7 to 12.75 GHz, Output Frequency Low Band:950 to 1.95 GHz, High Band:1.1 to 2.15 GHz, LO Frequency Low Band:9.75 GHz, High Band:10.6 GHz, Gain 48 to 62 dB, LO Frequency Stability +/- 50 ppm. More details for NJR2843L can be seen below.