The NJS8488EN from Nisshinbo Micro Devices Inc. is a Low Noise Block with RF/Input Frequency 4.5 to 4.8 GHz, Output Frequency 960 MHz to 1.26 GHz, LO Frequency 5.76 GHz, Gain 59 to 66 dB, External Reference 10 MHz. More details for NJS8488EN can be seen below.