Maritime navigation and radiocommunication equipment and systems - VHF
data exchange system - Requirements and methods of testing for stations
including ASM functionality
High voltage switchgear and controlgear - Part 111: Overhead,
pad-mounted, dry vault, and submersible automatic circuit reclosers and
fault interrupters for alternating current systems up to 38 kV
Short-circuit currents in three-phase a.c. systems - Part 3: Currents
during two separate simultaneous line-to-earth short circuits and
partial short-circuit currents flowing through earth
Radio-frequency connectors. Part 21: Two types of radio-frequency
connectors with inner diameter of outer conductor 9.5 mm (0.374 in) with
different versions of screw coupling - Characteristic impedance 50 ohms
(Types SC-A and SC-B)