The CCIR, CONSIDERING that the availability of navigational and meteorological warnings and urgent information on board ships is of great importance for safety; that the existing radiocommunication system for promulgation of navigational and meteorological warnings and urgent information to ships can be improved by use of modern techniques.
ITU-R M.540-2 SPANISH-1990由国际电信联盟 IX-ITU 发布于 1990-01-01。
ITU-R M.540-2 SPANISH-1990 在中国标准分类中归属于: M39 传真电报设备。
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