BS EN 61169-8:2007
射频连接器.分规范.外导体内径为6.5 mm(0.256 in)的卡口锁紧射频同轴连接器.特征阻抗50 Ω(BNC型)
Radio-frequency connectors. Sectional specification. RF coaxial connectors with inner diameter of outer conductor 6,5 mm (0, 256 in) with bayonet lock. Characteristic impedance 50 ohms (type BNC)