Historical
IEC 60169-24 Ed. 1.0 b Cor.1:1995
"Corrigendum 1 - Radio-frequency connectors - Part 24: Radio-frequency coaxial connectors with screw coupling, typically for use in 75 ohm cable distribution systems (Type F)"
"Specifies radio-frequency coaxial connectors which are typically for use in 75 ohm cable distribution systems with a variety of flexible cable, but which may also be used in both matched and unmatched applications."
International Electrotechnical Commission [iec]