{"id":4332,"date":"2025-06-03T21:49:07","date_gmt":"2025-06-03T14:49:07","guid":{"rendered":"https:\/\/antoanhanghai.com\/?p=4332"},"modified":"2025-06-03T21:55:33","modified_gmt":"2025-06-03T14:55:33","slug":"bo-dam-4-chu-so","status":"publish","type":"post","link":"https:\/\/antoanhanghai.com\/en\/bo-dam-4-chu-so\/","title":{"rendered":"B\u1ed9 \u0110\u00e0m 4 Ch\u1eef S\u1ed1 \u2013Thi\u1ebft B\u1ecb Li\u00ean L\u1ea1c H\u00e0ng H\u1ea3i B\u1eaft Bu\u1ed9c t\u1eeb 2028 Theo IMO"},"content":{"rendered":"

B\u1ed9 \u0111\u00e0m 4 ch\u1eef s\u1ed1 <\/strong><\/h1>\n

Chu\u1ea9n thi\u1ebft b\u1ecb li\u00ean l\u1ea1c h\u00e0ng h\u1ea3i b\u1eaft bu\u1ed9c t\u1eeb 2028 theo IMO MSC.1\/Circ.1460\/Rev.5<\/strong><\/h1>\n

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T\u1eeb ng\u00e0y 01\/01\/2028<\/strong>, c\u00e1c thi\u1ebft b\u1ecb b\u1ed9 \u0111\u00e0m l\u1eafp \u0111\u1eb7t m\u1edbi ho\u1eb7c thay th\u1ebf tr\u00ean t\u00e0u bi\u1ec3n s\u1ebd b\u1eaft bu\u1ed9c ph\u1ea3i h\u1ed7 tr\u1ee3 k\u00eanh 4 ch\u1eef s\u1ed1<\/strong>, theo \u0111\u00fang n\u1ed9i dung th\u00f4ng t\u01b0 IMO MSC.1\/Circ.1460\/Rev.5<\/strong>. \u0110\u00e2y l\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt quan tr\u1ecdng li\u00ean quan \u0111\u1ebfn vi\u1ec7c c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng li\u00ean l\u1ea1c h\u00e0ng h\u1ea3i theo quy chu\u1ea9n m\u1edbi c\u1ee7a ITU Radio Regulations<\/strong>, c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp t\u1edbi kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh c\u1ee7a t\u00e0u khi ra v\u00e0o c\u1ea3ng qu\u1ed1c t\u1ebf v\u00e0 t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng VTS.<\/p>\n

\"b\u1ed9<\/p>\n

( B\u1ed9 \u0110\u00e0m Tr\u1ef1c Canh DSC- 4 ch\u1eef s\u1ed1-Model NVR-3000)<\/h2>\n

C\u01a1 s\u1edf k\u1ef9 thu\u1eadt c\u1ee7a y\u00eau c\u1ea7u b\u1ed9 \u0111\u00e0m 4 ch\u1eef s\u1ed1<\/strong><\/h3>\n
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Tr\u01b0\u1edbc \u0111\u00e2y, b\u1ed9 \u0111\u00e0m h\u00e0ng h\u1ea3i th\u01b0\u1eddng s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng k\u00eanh 2 ho\u1eb7c 3 ch\u1eef s\u1ed1 (VDU channels), d\u1ef1a tr\u00ean quy ho\u1ea1ch ph\u1ed5 t\u1ea7n VHF c\u0169. Tuy nhi\u00ean, trong n\u1ed7 l\u1ef1c n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng t\u1ea7n s\u1ed1 v\u00e0 chu\u1ea9n h\u00f3a giao ti\u1ebfp h\u00e0ng h\u1ea3i, <\/span>Li\u00ean minh Vi\u1ec5n th\u00f4ng Qu\u1ed1c t\u1ebf (ITU)<\/strong> \u0111\u00e3 m\u1edf r\u1ed9ng b\u0103ng t\u1ea7n VHF, b\u1ed5 sung c\u00e1c k\u00eanh <\/span>4-digit VHF<\/strong> \u2013 ti\u00eau bi\u1ec3u l\u00e0 c\u00e1c k\u00eanh s\u1ed1 t\u1eeb\u00a0<\/span>1001 \u0111\u1ebfn 1999 v\u00e0 t\u1eeb 2001 \u0111\u1ebfn 2999.<\/strong><\/p>\n<\/blockquote>\n

C\u00e1c k\u00eanh 4 ch\u1eef s\u1ed1 hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho nhi\u1ec1u \u1ee9ng d\u1ee5ng n\u00e2ng cao, bao g\u1ed3m:<\/p>\n