The NJT8371NMR from Nisshinbo Micro Devices is a Block Upconverter with DC Voltage 36 to 60 V, Gain 66 to 72 dB(Linear Gain), Impedance 50 Ohms, Input Frequency 950 MHz to 1.450 GHz, LO Frequency 13.05 GHz. Tags: Waveguide. More details for NJT8371NMR can be seen below.