The NJS8486EN from Nisshinbo Micro Devices Inc. is a Low Noise Block with RF/Input Frequency 3.4 to 4.2 GHz, Output Frequency 950 MHz to 1.75 GHz, LO Frequency 5.15 GHz, Gain 59 to 66 dB, External Reference 10 MHz. More details for NJS8486EN can be seen below.