This standard (Part I) specifies the dimensions, constructional details and the requirements for the RF flexible coaxial cables having type designation 75-7-1.
IS 5802 Pt.1-1970 history
1971IS 5802 Pt.1-1970 Specification for flexible coaxial radio frequency cables with a characteristic impedance of 75Ω Part Ⅰ Cable types 75-7-1