IEC 60169-13:1976/AMD1:1996
Radio frequency connectors - Part 13: RF coaxial connectors with inner diameter of outer conductor 5,6 mm (0,22 in) - Characteristic impedance 75 ohms (type 1,6/5,6) - Characteristic impedance 50 ohms (type 1,8/5,6) with similar mating dimensions; Amendme