{"id":4785,"date":"2025-11-02T20:49:07","date_gmt":"2025-11-02T13:49:07","guid":{"rendered":"https:\/\/antoanhanghai.com\/?p=4785"},"modified":"2025-11-02T20:49:07","modified_gmt":"2025-11-02T13:49:07","slug":"mf-hf-dsc","status":"publish","type":"post","link":"https:\/\/antoanhanghai.com\/en\/mf-hf-dsc\/","title":{"rendered":"X\u1eed l\u00fd t\u00edn hi\u1ec7u c\u1ea5p c\u1ee9u b\u1eb1ng DSC MF\/HF \u2013 H\u01b0\u1edbng d\u1eabn t\u1eeb th\u1ef1c t\u1ebf v\u1eadn h\u00e0nh tr\u00ean t\u00e0u bi\u1ec3n"},"content":{"rendered":"<p data-start=\"330\" data-end=\"644\">Trong ngh\u1ec1 k\u1ef9 thu\u1eadt h\u00e0ng h\u1ea3i, t\u00f4i t\u1eebng nghe m\u1ed9t c\u00e2u n\u00f3i m\u00e0 \u0111\u1ebfn gi\u1edd v\u1eabn c\u00f2n nguy\u00ean gi\u00e1 tr\u1ecb: <em data-start=\"421\" data-end=\"516\">\u201cKhi s\u00f3ng y\u00ean bi\u1ec3n l\u1eb7ng, radio ch\u1ec9 l\u00e0 thi\u1ebft b\u1ecb. Khi g\u1eb7p n\u1ea1n gi\u1eefa \u0111\u1ea1i d\u01b0\u01a1ng, n\u00f3 l\u00e0 sinh m\u1ec7nh.\u201d<\/em><br data-start=\"516\" data-end=\"519\" \/>\u0110i\u1ec1u \u0111\u00f3 \u0111\u00fang, \u0111\u1eb7c bi\u1ec7t v\u1edbi h\u1ec7 th\u1ed1ng MF\/HF DSC \u2013 c\u00f4ng c\u1ee5 li\u00ean l\u1ea1c kh\u1ea9n c\u1ea5p trong h\u1ec7 th\u1ed1ng GMDSS, d\u00e0nh cho t\u00e0u ho\u1ea1t \u0111\u1ed9ng xa b\u1edd.<\/p>\n<p data-start=\"646\" data-end=\"916\">L\u00e0 k\u1ef9 s\u01b0 t\u1eebng tham gia c\u00e0i \u0111\u1eb7t, ki\u1ec3m tra v\u00e0 x\u1eed l\u00fd s\u1ef1 c\u1ed1 h\u00e0ng tr\u0103m tr\u1ea1m radio tr\u00ean t\u00e0u h\u00e0ng, t\u00e0u d\u1ea7u v\u00e0 t\u00e0u container, t\u00f4i mu\u1ed1n chia s\u1ebb <strong data-start=\"781\" data-end=\"803\">t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf<\/strong>: Khi t\u00e0u c\u1ee7a b\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u c\u1ea5p c\u1ee9u (distress call) t\u1eeb t\u00e0u kh\u00e1c tr\u00ean t\u1ea7n s\u1ed1 DSC \u2013 b\u1ea1n n\u00ean x\u1eed l\u00fd th\u1ebf n\u00e0o?<\/p>\n<h3 data-start=\"923\" data-end=\"987\"><strong data-start=\"927\" data-end=\"987\">T\u00ecnh hu\u1ed1ng: T\u00e0u b\u1ea1n nh\u1eadn t\u00edn hi\u1ec7u c\u1ea5p c\u1ee9u DSC tr\u00ean MF\/HF D<\/strong><strong data-start=\"927\" data-end=\"987\">SC <\/strong><\/h3>\n<p data-start=\"989\" data-end=\"1152\">B\u1ea1n \u0111ang trong ca tr\u1ef1c, thi\u1ebft b\u1ecb MF\/HF DSC \u0111\u1ed9t ng\u1ed9t ph\u00e1t \u00e2m b\u00e1o kh\u1ea9n c\u1ea5p \u2013 li\u00ean t\u1ee5c, vang d\u1ed9i, kh\u00f4ng th\u1ec3 t\u1eaft \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch th\u00f4ng th\u01b0\u1eddng. M\u00e0n h\u00ecnh hi\u1ec7n d\u00f2ng ch\u1eef:<\/p>\n<blockquote data-start=\"1153\" data-end=\"1254\">\n<p data-start=\"1155\" data-end=\"1254\">&#8220;DISTRESS RECEIVED \u2013 MMSI: 123456789 \u2013 Position: LAT 12\u00b034.5\u2019N \/ LON 109\u00b045.6\u2019E \u2013 Nature: Flooding&#8221;<\/p>\n<\/blockquote>\n<p data-start=\"1256\" data-end=\"1329\">K\u00e8m theo \u0111\u00f3 l\u00e0 th\u00f4ng tin t\u1ea7n s\u1ed1 DSC nh\u1eadn t\u00edn hi\u1ec7u, v\u00ed d\u1ee5: <strong data-start=\"1314\" data-end=\"1328\">8414.5 kHz<\/strong>.<\/p>\n<h3 data-start=\"1336\" data-end=\"1393\"><strong data-start=\"1340\" data-end=\"1393\">1. Vi\u1ec7c \u0111\u1ea7u ti\u00ean \u2013 B\u00ecnh t\u0129nh v\u00e0 x\u00e1c nh\u1eadn t\u00edn hi\u1ec7u<\/strong><\/h3>\n<p data-start=\"1395\" data-end=\"1461\">\u00c2m b\u00e1o kh\u1ea9n c\u1ea5p l\u00e0 b\u1eaft bu\u1ed9c theo quy chu\u1ea9n qu\u1ed1c t\u1ebf. \u0110\u1ec3 t\u1eaft \u00e2m b\u00e1o:<\/p>\n<ul data-start=\"1462\" data-end=\"1647\">\n<li data-start=\"1462\" data-end=\"1547\">\n<p data-start=\"1464\" data-end=\"1547\">B\u1ea5m ph\u00edm &#8220;CLICK&#8221; ho\u1eb7c &#8220;SILENCE&#8221; tr\u00ean m\u00e0n h\u00ecnh ch\u00ednh (th\u01b0\u1eddng l\u00e0 ph\u00edm v\u1eadt l\u00fd ho\u1eb7c \u1ea3o)<\/p>\n<\/li>\n<li data-start=\"1548\" data-end=\"1647\">\n<p data-start=\"1550\" data-end=\"1647\">X\u00e1c minh chi ti\u1ebft n\u1ed9i dung c\u1ea3nh b\u00e1o: MMSI, v\u1ecb tr\u00ed, nguy\u00ean nh\u00e2n g\u1eb7p n\u1ea1n, th\u1eddi gian, s\u1ed1 l\u1ea7n l\u1eb7p l\u1ea1i<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1649\" data-end=\"1850\"><strong data-start=\"1649\" data-end=\"1659\">L\u01b0u \u00fd:<\/strong> Kh\u00f4ng b\u1ea5m n\u00fat ACK (Acknowledgement) n\u1ebfu kh\u00f4ng ch\u1eafc m\u00ecnh \u0111\u01b0\u1ee3c ph\u00e9p \u2013 \u0111\u00e2y l\u00e0 h\u00e0nh \u0111\u1ed9ng mang t\u00ednh ph\u00e1p l\u00fd, v\u00ec b\u1ea1n \u0111ang tuy\u00ean b\u1ed1 \u201cT\u00f4i \u0111\u00e3 ti\u1ebfp nh\u1eadn v\u00e0 ch\u1ecbu tr\u00e1ch nhi\u1ec7m ph\u1ea3n h\u1ed3i t\u00edn hi\u1ec7u c\u1ee9u n\u1ea1n\u201d.<\/p>\n<h3 data-start=\"1857\" data-end=\"1930\"><strong data-start=\"1861\" data-end=\"1930\">2. Ch\u1edd t\u1ed1i thi\u1ec3u 3 ph\u00fat \u0111\u1ec3 quan s\u00e1t c\u00f3 tr\u1ea1m b\u1edd n\u00e0o ph\u1ea3n h\u1ed3i kh\u00f4ng<\/strong><\/h3>\n<p data-start=\"1932\" data-end=\"2135\">Theo th\u00f4ng l\u1ec7 qu\u1ed1c t\u1ebf, tr\u1ea1m b\u1edd (coast station) l\u00e0 \u0111\u01a1n v\u1ecb ch\u00ednh nh\u1eadn v\u00e0 ph\u1ea3n h\u1ed3i t\u00edn hi\u1ec7u c\u1ea5p c\u1ee9u. N\u1ebfu t\u00e0u b\u1ea1n kh\u00f4ng n\u1eb1m g\u1ea7n t\u00e0u g\u1eb7p n\u1ea1n ho\u1eb7c kh\u00f4ng c\u00f3 ch\u1ec9 \u0111\u1ea1o t\u1eeb RCC (Rescue Coordination Center), b\u1ea1n c\u1ea7n:<\/p>\n<ul data-start=\"2136\" data-end=\"2325\">\n<li data-start=\"2136\" data-end=\"2227\">\n<p data-start=\"2138\" data-end=\"2227\">Theo d\u00f5i li\u00ean t\u1ee5c tr\u00ean t\u1ea7n s\u1ed1 tho\u1ea1i k\u00e8m theo t\u00edn hi\u1ec7u (th\u01b0\u1eddng l\u00e0 2182.0 kHz, 8416.5 kHz\u2026)<\/p>\n<\/li>\n<li data-start=\"2228\" data-end=\"2281\">\n<p data-start=\"2230\" data-end=\"2281\">Kh\u00f4ng can thi\u1ec7p n\u1ebfu \u0111\u00e3 c\u00f3 \u0111\u01a1n v\u1ecb chuy\u00ean tr\u00e1ch x\u1eed l\u00fd<\/p>\n<\/li>\n<li data-start=\"2282\" data-end=\"2325\">\n<p data-start=\"2284\" data-end=\"2325\">Kh\u00f4ng g\u1eedi l\u1ea1i c\u00f9ng m\u1ed9t c\u1ea3nh b\u00e1o g\u00e2y nhi\u1ec5u<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2332\" data-end=\"2402\"><strong data-start=\"2336\" data-end=\"2402\">3. N\u1ebfu qu\u00e1 3 ph\u00fat kh\u00f4ng c\u00f3 ph\u1ea3n h\u1ed3i \u2013 T\u00e0u b\u1ea1n c\u00f3 th\u1ec3 h\u00e0nh \u0111\u1ed9ng<\/strong><\/h3>\n<p data-start=\"2404\" data-end=\"2412\">Khi b\u1ea1n:<\/p>\n<ul data-start=\"2413\" data-end=\"2619\">\n<li data-start=\"2413\" data-end=\"2443\">\n<p data-start=\"2415\" data-end=\"2443\">Kh\u00f4ng th\u1ea5y c\u00f3 ACK t\u1eeb tr\u1ea1m b\u1edd<\/p>\n<\/li>\n<li data-start=\"2444\" data-end=\"2493\">\n<p data-start=\"2446\" data-end=\"2493\">Nh\u1eadn nhi\u1ec1u l\u1ea7n c\u00f9ng m\u1ed9t t\u00edn hi\u1ec7u t\u1eeb t\u00e0u g\u1eb7p n\u1ea1n<\/p>\n<\/li>\n<li data-start=\"2494\" data-end=\"2563\">\n<p data-start=\"2496\" data-end=\"2563\">T\u00e0u c\u1ee7a b\u1ea1n \u1edf g\u1ea7n v\u1ecb tr\u00ed n\u1ea1n nh\u00e2n (v\u00ed d\u1ee5 trong b\u00e1n k\u00ednh 300 h\u1ea3i l\u00fd)<\/p>\n<\/li>\n<li data-start=\"2564\" data-end=\"2619\">\n<p data-start=\"2566\" data-end=\"2619\">C\u00f3 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 ho\u1eb7c truy\u1ec1n ti\u1ebfp th\u00f4ng tin t\u1edbi RCC<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2621\" data-end=\"2684\">Th\u00ec b\u1ea1n <strong data-start=\"2629\" data-end=\"2665\">c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n Acknowledgement<\/strong> theo tr\u00ecnh t\u1ef1 sau:<\/p>\n<ul data-start=\"2685\" data-end=\"2822\">\n<li data-start=\"2685\" data-end=\"2725\">\n<p data-start=\"2687\" data-end=\"2725\">Ch\u1ecdn \u201cACK\u201d tr\u00ean m\u00e0n h\u00ecnh nh\u1eadn t\u00edn hi\u1ec7u<\/p>\n<\/li>\n<li data-start=\"2726\" data-end=\"2780\">\n<p data-start=\"2728\" data-end=\"2780\">H\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 ph\u00e1t l\u1ea1i g\u00f3i DSC ACK tr\u00ean c\u00f9ng t\u1ea7n s\u1ed1<\/p>\n<\/li>\n<li data-start=\"2781\" data-end=\"2822\">\n<p data-start=\"2783\" data-end=\"2822\">\u0110\u1ed3ng th\u1eddi l\u01b0u l\u1ea1i trong nh\u1eadt k\u00fd DSC log<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2824\" data-end=\"2975\"><strong data-start=\"2824\" data-end=\"2837\">C\u1ea3nh b\u00e1o:<\/strong> Kh\u00f4ng \u0111\u01b0\u1ee3c g\u1eedi ACK n\u1ebfu kh\u00f4ng th\u1ec3 h\u1ed7 tr\u1ee3 ho\u1eb7c kh\u00f4ng c\u00f3 quy\u1ec1n theo ph\u00e2n c\u00f4ng tr\u00e1ch nhi\u1ec7m \u2013 vi\u1ec7c n\u00e0y c\u00f3 th\u1ec3 b\u1ecb coi l\u00e0 sai quy tr\u00ecnh c\u1ee9u n\u1ea1n.<\/p>\n<h3 data-start=\"2982\" data-end=\"3044\"><strong data-start=\"2986\" data-end=\"3044\">4. G\u1ecdi l\u1ea1i t\u00e0u g\u1eb7p n\u1ea1n b\u1eb1ng tho\u1ea1i tr\u00ean t\u1ea7n s\u1ed1 ch\u1ec9 \u0111\u1ecbnh<\/strong><\/h3>\n<p data-start=\"3046\" data-end=\"3110\">Sau khi ACK ho\u1eb7c khi quy\u1ebft \u0111\u1ecbnh li\u00ean h\u1ec7 b\u1eb1ng l\u1eddi n\u00f3i, th\u1ef1c hi\u1ec7n:<\/p>\n<ul data-start=\"3111\" data-end=\"3261\">\n<li data-start=\"3111\" data-end=\"3137\">\n<p data-start=\"3113\" data-end=\"3137\">Chuy\u1ec3n sang m\u00e0n h\u00ecnh SSB<\/p>\n<\/li>\n<li data-start=\"3138\" data-end=\"3215\">\n<p data-start=\"3140\" data-end=\"3215\">Nh\u1eadp t\u1ea7n s\u1ed1 tho\u1ea1i ph\u00f9 h\u1ee3p (th\u01b0\u1eddng 2182.0 kHz \u2013 t\u1ea7n s\u1ed1 c\u1ea5p c\u1ee9u truy\u1ec1n th\u1ed1ng)<\/p>\n<\/li>\n<li data-start=\"3216\" data-end=\"3261\">\n<p data-start=\"3218\" data-end=\"3261\">B\u1ea5m n\u00fat PTT (push-to-talk) v\u00e0 g\u1ecdi theo m\u1eabu:<\/p>\n<\/li>\n<\/ul>\n<div class=\"contain-inline-size rounded-2xl relative bg-token-sidebar-surface-primary\">\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-text\">\u201cMAYDAY MAYDAY MAYDAY<br \/>\nThis is Vessel ABC, MMSI 987654321, calling distress vessel 123456789.<br \/>\nReceived your DSC distress alert. Please respond.\u201d<br \/>\n<\/code><\/div>\n<\/div>\n<p data-start=\"3426\" data-end=\"3473\">L\u1eb7p l\u1ea1i nhi\u1ec1u l\u1ea7n n\u1ebfu kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i.<\/p>\n<h3 data-start=\"3480\" data-end=\"3517\"><strong data-start=\"3484\" data-end=\"3517\">5. G\u1eedi relay distress n\u1ebfu c\u1ea7n<\/strong><\/h3>\n<p data-start=\"3519\" data-end=\"3601\">N\u1ebfu t\u00e0u b\u1ea1n kh\u00f4ng th\u1ec3 h\u1ed7 tr\u1ee3 nh\u01b0ng v\u1eabn kh\u00f4ng th\u1ea5y b\u00ean n\u00e0o ph\u1ea3n h\u1ed3i sau nhi\u1ec1u ph\u00fat:<\/p>\n<ul data-start=\"3602\" data-end=\"3712\">\n<li data-start=\"3602\" data-end=\"3671\">\n<p data-start=\"3604\" data-end=\"3671\">C\u00f3 th\u1ec3 <strong data-start=\"3611\" data-end=\"3634\">ph\u00e1t Distress Relay t\u1eeb MF\/HF DSC<\/strong>\u00a0\u0111\u1ec3 b\u00e1o cho c\u00e1c t\u00e0u kh\u00e1c ho\u1eb7c tr\u1ea1m b\u1edd<\/p>\n<\/li>\n<li data-start=\"3672\" data-end=\"3712\">\n<p data-start=\"3674\" data-end=\"3712\">Ch\u1ecdn \u201cRelay\u201d \u2192 nh\u1eadp MMSI tr\u1ea1m b\u1edd \u2192 g\u1eedi<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3714\" data-end=\"3814\">Relay c\u0169ng c\u1ea7n th\u1ef1c hi\u1ec7n nghi\u00eam t\u00fac, \u0111\u00fang quy\u1ec1n h\u1ea1n. G\u1eedi sai c\u00f3 th\u1ec3 g\u00e2y nhi\u1ec5u lo\u1ea1n th\u00f4ng tin c\u1ee9u h\u1ed9.<\/p>\n<h3 data-start=\"3821\" data-end=\"3866\"><strong data-start=\"3825\" data-end=\"3866\">6. Ghi nh\u1eadn \u0111\u1ea7y \u0111\u1ee7 nh\u1eadt k\u00fd v\u00e0 b\u00e1o c\u00e1o<\/strong><\/h3>\n<p data-start=\"3868\" data-end=\"3902\">D\u00f9 b\u1ea1n c\u00f3 ACK hay kh\u00f4ng, c\u0169ng c\u1ea7n:<\/p>\n<ul data-start=\"3903\" data-end=\"4075\">\n<li data-start=\"3903\" data-end=\"3950\">\n<p data-start=\"3905\" data-end=\"3950\">Ghi chi ti\u1ebft s\u1ef1 ki\u1ec7n v\u00e0o logbook ho\u1eb7c DSC log<\/p>\n<\/li>\n<li data-start=\"3951\" data-end=\"3999\">\n<p data-start=\"3953\" data-end=\"3999\">Th\u00f4ng b\u00e1o cho s\u1ef9 quan boong ho\u1eb7c thuy\u1ec1n tr\u01b0\u1edfng<\/p>\n<\/li>\n<li data-start=\"4000\" data-end=\"4075\">\n<p data-start=\"4002\" data-end=\"4075\">N\u1ebfu c\u00f3 h\u1ec7 th\u1ed1ng in DSC \u1edf MF\/HF DSC ho\u1eb7c ghi log t\u1ef1 \u0111\u1ed9ng \u2013 in ra \u0111\u1ec3 l\u01b0u l\u00e0m b\u1eb1ng ch\u1ee9ng<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4082\" data-end=\"4117\"><strong data-start=\"4086\" data-end=\"4117\">Kinh nghi\u1ec7m th\u1ef1c t\u1ebf c\u1ea7n nh\u1edb<\/strong><\/h3>\n<ul data-start=\"4119\" data-end=\"4405\">\n<li data-start=\"4119\" data-end=\"4156\">\n<p data-start=\"4121\" data-end=\"4156\"><strong data-start=\"4121\" data-end=\"4156\">Kh\u00f4ng ACK n\u1ebfu kh\u00f4ng h\u1ed7 tr\u1ee3 \u0111\u01b0\u1ee3c<\/strong><\/p>\n<\/li>\n<li data-start=\"4157\" data-end=\"4219\">\n<p data-start=\"4159\" data-end=\"4219\"><strong data-start=\"4159\" data-end=\"4186\">Lu\u00f4n \u0111\u1ee3i \u00edt nh\u1ea5t 3 ph\u00fat<\/strong> \u2013 d\u00e0nh quy\u1ec1n \u01b0u ti\u00ean cho tr\u1ea1m b\u1edd<\/p>\n<\/li>\n<li data-start=\"4220\" data-end=\"4310\">\n<p data-start=\"4222\" data-end=\"4310\"><strong data-start=\"4222\" data-end=\"4241\">\u0110\u1eebng ho\u1ea3ng lo\u1ea1n<\/strong> \u2013 t\u00edn hi\u1ec7u DSC \u0111\u01b0\u1ee3c ph\u00e1t r\u1ea5t nh\u1ea1y, c\u00f3 th\u1ec3 t\u1eeb t\u00e0u xa h\u00e0ng ng\u00e0n h\u1ea3i l\u00fd<\/p>\n<\/li>\n<li data-start=\"4311\" data-end=\"4405\">\n<p data-start=\"4313\" data-end=\"4405\"><strong data-start=\"4313\" data-end=\"4344\">Ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 Watch Scan<\/strong> \u0111\u1ec3 kh\u00f4ng b\u1ecf s\u00f3t t\u00edn hi\u1ec7u khi h\u1ec7 th\u1ed1ng \u0111ang \u1edf ch\u1ebf \u0111\u1ed9 gi\u00e1m s\u00e1t<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4412\" data-end=\"4428\"><strong data-start=\"4416\" data-end=\"4428\">K\u1ebft lu\u1eadn<\/strong><\/h3>\n<p data-start=\"4430\" data-end=\"4654\">T\u00edn hi\u1ec7u c\u1ea5p c\u1ee9u DSC kh\u00f4ng gi\u1ed1ng m\u1ed9t cu\u1ed9c g\u1ecdi th\u00f4ng th\u01b0\u1eddng. N\u00f3 l\u00e0 l\u1eddi k\u00eau c\u1ee9u gi\u1eefa \u0111\u1ea1i d\u01b0\u01a1ng. L\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh thi\u1ebft b\u1ecb, d\u00f9 l\u00e0 k\u1ef9 s\u01b0 hay s\u0129 quan h\u00e0ng h\u1ea3i, b\u1ea1n c\u1ea7n hi\u1ec3u r\u00f5 quy tr\u00ecnh v\u00e0 h\u00e0nh \u0111\u1ed9ng \u0111\u00fang vai tr\u00f2, \u0111\u00fang th\u1eddi \u0111i\u1ec3m thi\u1ebft b\u1ecb MF\/HF DSC<\/p>\n<p data-start=\"4656\" data-end=\"4758\">H\u00e3y coi m\u1ed7i t\u00ecnh hu\u1ed1ng nh\u01b0 tr\u00ean l\u00e0 m\u1ed9t b\u00e0i ki\u1ec3m tra \u2013 kh\u00f4ng ch\u1ec9 c\u1ee7a thi\u1ebft b\u1ecb, m\u00e0 c\u00f2n l\u00e0 c\u1ee7a con ng\u01b0\u1eddi.<\/p>\n<h3><strong>H\u00e3y li\u00ean h\u1ec7 ngay v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 nh\u1eadn t\u01b0 v\u1ea5n chi ti\u1ebft v\u1ec1 s\u1ea3n ph\u1ea9m MF HF Radio : 097 800 1968 ( ZALO\/DT)<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/antoanhanghai.com\/en\/tieu-chuan-cho-mfhf-msc-512105\/\">Ti\u00eau chu\u1ea9n IMO v\u1ec1 MF\/HF<\/a><\/p>\n<p><a href=\"https:\/\/antoanhanghai.com\/en\/bo-phan-mf-hf\/\">Nghi\u00ean c\u1ee9u c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a MF\/HF<\/a><\/p>\n<p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/antoanhanghai.com\/en\/chon-mf-hf\/\">H\u01b0\u1edbng D\u1eabn L\u1ef1a Ch\u1ecdn MF\/HF Theo Ti\u00eau Chu\u1ea9n IMO M\u1edbi 2024<\/a><\/p>\n<p><a href=\"https:\/\/antoanhanghai.com\/en\/thiet-bi-mf-hf\/\">C\u01a1 b\u1ea3n v\u1ec1 thi\u1ebft b\u1ecb MF\/HF<\/a><\/p>\n<p><a href=\"https:\/\/youtu.be\/30lyLlKDW_Y?si=UBCH6NGl3yhqLxfQ\" target=\"_blank\" rel=\"noopener\">Video Unbox S\u1ea3n ph\u1ea9m<\/a><\/p>\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=_qb1AfGHh7E\" target=\"_blank\" rel=\"noopener\">Video c\u1ee7a Th\u1ee7y Th\u1ee7 H\u01b0\u1edbng D\u1eabn Test MF\/HF<\/a><\/p>\n<div>LINK<\/div>\n<div>\n<div><a href=\"https:\/\/www.dnv.com\/maritime\/ship-classification\/\" target=\"_blank\" rel=\"noopener\">DNV<\/a><\/div>\n<div><a href=\"https:\/\/ww2.eagle.org\/en.html\" target=\"_blank\" rel=\"noopener\">ABS<\/a><\/div>\n<div><a href=\"https:\/\/www.classnk.or.jp\/hp\/en\/index.html\" target=\"_blank\" rel=\"noopener\">NK<\/a><\/div>\n<div><a href=\"https:\/\/antoanhanghai.com\/en\/tieu-chuan-cho-phan-xa-radar-msc-510105\/\" target=\"_blank\" rel=\"noopener\">CCS<\/a><\/div>\n<div><a href=\"http:\/\/www.vr.org.vn\/\" target=\"_blank\" rel=\"noopener\">VR<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Trong ngh\u1ec1 k\u1ef9 thu\u1eadt h\u00e0ng h\u1ea3i, t\u00f4i t\u1eebng nghe m\u1ed9t c\u00e2u n\u00f3i m\u00e0 \u0111\u1ebfn gi\u1edd v\u1eabn c\u00f2n nguy\u00ean gi\u00e1 tr\u1ecb: \u201cKhi s\u00f3ng y\u00ean bi\u1ec3n l\u1eb7ng, radio ch\u1ec9 l\u00e0 thi\u1ebft b\u1ecb. Khi g\u1eb7p n\u1ea1n gi\u1eefa \u0111\u1ea1i d\u01b0\u01a1ng, n\u00f3 l\u00e0 sinh m\u1ec7nh.\u201d\u0110i\u1ec1u \u0111\u00f3 \u0111\u00fang, \u0111\u1eb7c bi\u1ec7t v\u1edbi h\u1ec7 th\u1ed1ng MF\/HF DSC \u2013 c\u00f4ng c\u1ee5 li\u00ean l\u1ea1c kh\u1ea9n c\u1ea5p trong h\u1ec7 th\u1ed1ng GMDSS, d\u00e0nh cho t\u00e0u ho\u1ea1t \u0111\u1ed9ng xa b\u1edd. L\u00e0 k\u1ef9 s\u01b0 t\u1eebng tham gia c\u00e0i \u0111\u1eb7t, ki\u1ec3m tra v\u00e0 x\u1eed l\u00fd s\u1ef1 c\u1ed1 h\u00e0ng tr\u0103m tr\u1ea1m radio tr\u00ean t\u00e0u h\u00e0ng, t\u00e0u d\u1ea7u v\u00e0 t\u00e0u container, t\u00f4i mu\u1ed1n chia s\u1ebb t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf: Khi t\u00e0u c\u1ee7a b\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u c\u1ea5p c\u1ee9u (distress call) t\u1eeb t\u00e0u kh\u00e1c tr\u00ean t\u1ea7n s\u1ed1 DSC \u2013 b\u1ea1n n\u00ean x\u1eed l\u00fd th\u1ebf n\u00e0o? T\u00ecnh hu\u1ed1ng: T\u00e0u b\u1ea1n nh\u1eadn t\u00edn hi\u1ec7u c\u1ea5p c\u1ee9u DSC tr\u00ean MF\/HF DSC B\u1ea1n \u0111ang trong ca tr\u1ef1c, thi\u1ebft b\u1ecb MF\/HF DSC \u0111\u1ed9t ng\u1ed9t ph\u00e1t \u00e2m b\u00e1o kh\u1ea9n c\u1ea5p \u2013 li\u00ean t\u1ee5c, vang d\u1ed9i, kh\u00f4ng th\u1ec3 t\u1eaft \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch th\u00f4ng th\u01b0\u1eddng. M\u00e0n h\u00ecnh hi\u1ec7n d\u00f2ng ch\u1eef: &#8220;DISTRESS RECEIVED \u2013 MMSI: 123456789 \u2013 Position: LAT 12\u00b034.5\u2019N \/ LON 109\u00b045.6\u2019E \u2013 Nature: Flooding&#8221; K\u00e8m theo \u0111\u00f3 l\u00e0 th\u00f4ng tin t\u1ea7n s\u1ed1 DSC nh\u1eadn t\u00edn hi\u1ec7u, v\u00ed d\u1ee5: 8414.5 kHz. 1. Vi\u1ec7c \u0111\u1ea7u ti\u00ean \u2013 B\u00ecnh t\u0129nh v\u00e0 x\u00e1c nh\u1eadn t\u00edn hi\u1ec7u \u00c2m b\u00e1o kh\u1ea9n c\u1ea5p l\u00e0 b\u1eaft bu\u1ed9c theo quy chu\u1ea9n qu\u1ed1c t\u1ebf. \u0110\u1ec3 t\u1eaft \u00e2m b\u00e1o: B\u1ea5m ph\u00edm &#8220;CLICK&#8221; ho\u1eb7c &#8220;SILENCE&#8221; tr\u00ean m\u00e0n h\u00ecnh ch\u00ednh (th\u01b0\u1eddng l\u00e0 ph\u00edm v\u1eadt l\u00fd ho\u1eb7c \u1ea3o) X\u00e1c minh chi ti\u1ebft n\u1ed9i dung c\u1ea3nh b\u00e1o: MMSI, v\u1ecb tr\u00ed, nguy\u00ean nh\u00e2n g\u1eb7p n\u1ea1n, th\u1eddi gian, s\u1ed1 l\u1ea7n l\u1eb7p l\u1ea1i L\u01b0u \u00fd: Kh\u00f4ng b\u1ea5m n\u00fat ACK (Acknowledgement) n\u1ebfu kh\u00f4ng ch\u1eafc m\u00ecnh \u0111\u01b0\u1ee3c ph\u00e9p \u2013 \u0111\u00e2y l\u00e0 h\u00e0nh \u0111\u1ed9ng mang t\u00ednh ph\u00e1p l\u00fd, v\u00ec b\u1ea1n \u0111ang tuy\u00ean b\u1ed1 \u201cT\u00f4i \u0111\u00e3 ti\u1ebfp nh\u1eadn v\u00e0 ch\u1ecbu tr\u00e1ch nhi\u1ec7m ph\u1ea3n h\u1ed3i t\u00edn hi\u1ec7u c\u1ee9u n\u1ea1n\u201d. 2. Ch\u1edd t\u1ed1i thi\u1ec3u 3 ph\u00fat \u0111\u1ec3 quan s\u00e1t c\u00f3 tr\u1ea1m b\u1edd n\u00e0o ph\u1ea3n h\u1ed3i kh\u00f4ng Theo th\u00f4ng l\u1ec7 qu\u1ed1c t\u1ebf, tr\u1ea1m b\u1edd (coast station) l\u00e0 \u0111\u01a1n v\u1ecb ch\u00ednh nh\u1eadn v\u00e0 ph\u1ea3n h\u1ed3i t\u00edn hi\u1ec7u c\u1ea5p c\u1ee9u. N\u1ebfu t\u00e0u b\u1ea1n kh\u00f4ng n\u1eb1m g\u1ea7n t\u00e0u g\u1eb7p n\u1ea1n ho\u1eb7c kh\u00f4ng c\u00f3 ch\u1ec9 \u0111\u1ea1o t\u1eeb RCC (Rescue Coordination Center), b\u1ea1n c\u1ea7n: Theo d\u00f5i li\u00ean t\u1ee5c tr\u00ean t\u1ea7n s\u1ed1 tho\u1ea1i k\u00e8m theo t\u00edn hi\u1ec7u (th\u01b0\u1eddng l\u00e0 2182.0 kHz, 8416.5 kHz\u2026) Kh\u00f4ng can thi\u1ec7p n\u1ebfu \u0111\u00e3 c\u00f3 \u0111\u01a1n v\u1ecb chuy\u00ean tr\u00e1ch x\u1eed l\u00fd Kh\u00f4ng g\u1eedi l\u1ea1i c\u00f9ng m\u1ed9t c\u1ea3nh b\u00e1o g\u00e2y nhi\u1ec5u 3. N\u1ebfu qu\u00e1 3 ph\u00fat kh\u00f4ng c\u00f3 ph\u1ea3n h\u1ed3i \u2013 T\u00e0u b\u1ea1n c\u00f3 th\u1ec3 h\u00e0nh \u0111\u1ed9ng Khi b\u1ea1n: Kh\u00f4ng th\u1ea5y c\u00f3 ACK t\u1eeb tr\u1ea1m b\u1edd Nh\u1eadn nhi\u1ec1u l\u1ea7n c\u00f9ng m\u1ed9t t\u00edn hi\u1ec7u t\u1eeb t\u00e0u g\u1eb7p n\u1ea1n T\u00e0u c\u1ee7a b\u1ea1n \u1edf g\u1ea7n v\u1ecb tr\u00ed n\u1ea1n nh\u00e2n (v\u00ed d\u1ee5 trong b\u00e1n k\u00ednh 300 h\u1ea3i l\u00fd) C\u00f3 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 ho\u1eb7c truy\u1ec1n ti\u1ebfp th\u00f4ng tin t\u1edbi RCC Th\u00ec b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n Acknowledgement theo tr\u00ecnh t\u1ef1 sau: Ch\u1ecdn \u201cACK\u201d tr\u00ean m\u00e0n h\u00ecnh nh\u1eadn t\u00edn hi\u1ec7u H\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 ph\u00e1t l\u1ea1i g\u00f3i DSC ACK tr\u00ean c\u00f9ng t\u1ea7n s\u1ed1 \u0110\u1ed3ng th\u1eddi l\u01b0u l\u1ea1i trong nh\u1eadt k\u00fd DSC log C\u1ea3nh b\u00e1o: Kh\u00f4ng \u0111\u01b0\u1ee3c g\u1eedi ACK n\u1ebfu kh\u00f4ng th\u1ec3 h\u1ed7 tr\u1ee3 ho\u1eb7c kh\u00f4ng c\u00f3 quy\u1ec1n theo ph\u00e2n c\u00f4ng tr\u00e1ch nhi\u1ec7m \u2013 vi\u1ec7c n\u00e0y c\u00f3 th\u1ec3 b\u1ecb coi l\u00e0 sai quy tr\u00ecnh c\u1ee9u n\u1ea1n. 4. G\u1ecdi l\u1ea1i t\u00e0u g\u1eb7p n\u1ea1n b\u1eb1ng tho\u1ea1i tr\u00ean t\u1ea7n s\u1ed1 ch\u1ec9 \u0111\u1ecbnh Sau khi ACK ho\u1eb7c khi quy\u1ebft \u0111\u1ecbnh li\u00ean h\u1ec7 b\u1eb1ng l\u1eddi n\u00f3i, th\u1ef1c hi\u1ec7n: Chuy\u1ec3n sang m\u00e0n h\u00ecnh SSB Nh\u1eadp t\u1ea7n s\u1ed1 tho\u1ea1i ph\u00f9 h\u1ee3p (th\u01b0\u1eddng 2182.0 kHz \u2013 t\u1ea7n s\u1ed1 c\u1ea5p c\u1ee9u truy\u1ec1n th\u1ed1ng) B\u1ea5m n\u00fat PTT (push-to-talk) v\u00e0 g\u1ecdi theo m\u1eabu: \u201cMAYDAY MAYDAY MAYDAY This is Vessel ABC, MMSI 987654321, calling distress vessel 123456789. Received your DSC distress alert. Please respond.\u201d L\u1eb7p l\u1ea1i nhi\u1ec1u l\u1ea7n n\u1ebfu kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i. 5. G\u1eedi relay distress n\u1ebfu c\u1ea7n N\u1ebfu t\u00e0u b\u1ea1n kh\u00f4ng th\u1ec3 h\u1ed7 tr\u1ee3 nh\u01b0ng v\u1eabn kh\u00f4ng th\u1ea5y b\u00ean n\u00e0o ph\u1ea3n h\u1ed3i sau nhi\u1ec1u ph\u00fat: C\u00f3 th\u1ec3 ph\u00e1t Distress Relay t\u1eeb MF\/HF DSC\u00a0\u0111\u1ec3 b\u00e1o cho c\u00e1c t\u00e0u kh\u00e1c ho\u1eb7c tr\u1ea1m b\u1edd Ch\u1ecdn \u201cRelay\u201d \u2192 nh\u1eadp MMSI tr\u1ea1m b\u1edd \u2192 g\u1eedi Relay c\u0169ng c\u1ea7n th\u1ef1c hi\u1ec7n nghi\u00eam t\u00fac, \u0111\u00fang quy\u1ec1n h\u1ea1n. G\u1eedi sai c\u00f3 th\u1ec3 g\u00e2y nhi\u1ec5u lo\u1ea1n th\u00f4ng tin c\u1ee9u h\u1ed9. 6. Ghi nh\u1eadn \u0111\u1ea7y \u0111\u1ee7 nh\u1eadt k\u00fd v\u00e0 b\u00e1o c\u00e1o D\u00f9 b\u1ea1n c\u00f3 ACK hay kh\u00f4ng, c\u0169ng c\u1ea7n: Ghi chi ti\u1ebft s\u1ef1 ki\u1ec7n v\u00e0o logbook ho\u1eb7c DSC log Th\u00f4ng b\u00e1o cho s\u1ef9 quan boong ho\u1eb7c thuy\u1ec1n tr\u01b0\u1edfng N\u1ebfu c\u00f3 h\u1ec7 th\u1ed1ng in DSC \u1edf MF\/HF DSC ho\u1eb7c ghi log t\u1ef1 \u0111\u1ed9ng \u2013 in ra \u0111\u1ec3 l\u01b0u l\u00e0m b\u1eb1ng ch\u1ee9ng Kinh nghi\u1ec7m th\u1ef1c t\u1ebf c\u1ea7n nh\u1edb Kh\u00f4ng ACK n\u1ebfu kh\u00f4ng h\u1ed7 tr\u1ee3 \u0111\u01b0\u1ee3c Lu\u00f4n \u0111\u1ee3i \u00edt nh\u1ea5t 3 ph\u00fat \u2013 d\u00e0nh quy\u1ec1n \u01b0u ti\u00ean cho tr\u1ea1m b\u1edd \u0110\u1eebng ho\u1ea3ng lo\u1ea1n \u2013 t\u00edn hi\u1ec7u DSC \u0111\u01b0\u1ee3c ph\u00e1t r\u1ea5t nh\u1ea1y, c\u00f3 th\u1ec3 t\u1eeb t\u00e0u xa h\u00e0ng ng\u00e0n h\u1ea3i l\u00fd Ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 Watch Scan \u0111\u1ec3 kh\u00f4ng b\u1ecf s\u00f3t t\u00edn hi\u1ec7u khi h\u1ec7 th\u1ed1ng \u0111ang \u1edf ch\u1ebf \u0111\u1ed9 gi\u00e1m s\u00e1t K\u1ebft lu\u1eadn T\u00edn hi\u1ec7u c\u1ea5p c\u1ee9u DSC kh\u00f4ng gi\u1ed1ng m\u1ed9t cu\u1ed9c g\u1ecdi th\u00f4ng th\u01b0\u1eddng. N\u00f3 l\u00e0 l\u1eddi k\u00eau c\u1ee9u gi\u1eefa \u0111\u1ea1i d\u01b0\u01a1ng. L\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh thi\u1ebft b\u1ecb, d\u00f9 l\u00e0 k\u1ef9 s\u01b0 hay s\u0129 quan h\u00e0ng h\u1ea3i, b\u1ea1n c\u1ea7n hi\u1ec3u r\u00f5 quy tr\u00ecnh v\u00e0 h\u00e0nh \u0111\u1ed9ng \u0111\u00fang vai tr\u00f2, \u0111\u00fang th\u1eddi \u0111i\u1ec3m thi\u1ebft b\u1ecb MF\/HF DSC H\u00e3y coi m\u1ed7i t\u00ecnh hu\u1ed1ng nh\u01b0 tr\u00ean l\u00e0 m\u1ed9t b\u00e0i ki\u1ec3m tra \u2013 kh\u00f4ng ch\u1ec9 c\u1ee7a thi\u1ebft b\u1ecb, m\u00e0 c\u00f2n l\u00e0 c\u1ee7a con ng\u01b0\u1eddi. 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