DIN EN 60169-21-1998 射频连接器.第21部分:外导体的内径为9.5mm(0.374in)的不同型式螺纹连接的特性阻抗为50Ω两种类型的射频连接器(SC-A和SC-B型)
Radio-frequency connectors - Part 21: Two types of radio-frequency connectors with inner diameter of outer conductor 9,5 mm (O,374 in) with different versions of screw coupling - Characteristic impedance 50 (Types SC-A and SC-B) (IEC 60169-21:1985 +