Radio-frequency connectors - Part 7: R.F. Coaxial connectors with inner diameter of outer conductor 9,5 mm (0.374 in) with bayonet lock - Characteristic impedance 50 ohms (Type C) IEC 169-7 /  
 IEC 169-7 
ISO, IEC. 
 - First edition. 
 - Geneva :   ISO :   IEC,   1975. 
 - 39 stron ;   30 cm.