Relates to connectors for use with r.f. cables, both flexible and semi-rigid, with air dielectric interface and high mechanical stability to withstand severe environmental exposure. The connectors provide low reflection in the microwave region up to 14 G
IEC 60169-11:1977 history
1977IEC 60169-11:1977 Radio-frequency connectors. Part 11 : R.F. coaxial connectors with inner diameter of outer conductor 9.5 mm (0.374 in) with screw coupling - Characteristic impedance 50 ohms (Type 4.1/9.5)