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Standards GB - Chinese national standards - Page 5954

Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level. Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document

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GB 13615-1992 WITHDRAWN

Electromagnetic environment protection requirements for earth stations

WITHDRAWN published on 19.8.1992

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GB 13616-1992 WITHDRAWN

Electromagnetic environment protection requirements for microwave relay stations

WITHDRAWN published on 19.8.1992

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GB 13617-1992 WITHDRAWN

Electromagnetic environment requirements for shortwave radio receiving stations

WITHDRAWN published on 19.8.1992

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GB/T 13619-1992 WITHDRAWN

Interference calculation methods for radio-relay systems

WITHDRAWN published on 19.8.1992

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GB/T 13620-1992 WITHDRAWN

Determination of coordination area and predication methods of interference between satellite communication earth station and terrestrial microwave station

WITHDRAWN published on 19.8.1992

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