BS EN IEC 61169-21:2022
射频连接器 外导体内径为 9.5 毫米(0.374 英寸)、带螺钉耦合的射频连接器截面规范 特性阻抗 50 欧姆(SC 型)
Radio-frequency connectors - Sectional specification for RF connectors with inner diameter of outer conductor 9,5 mm (0,374 in) with screw coupling. Characteristic impedance 50 ohms (Type SC)