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Digital selective calling
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{{Short description|Marine radio standard}} [[File:VHF canal 70.jpg|thumb|A Sailor VHF DSC unit]] '''Digital selective calling''' ('''DSC''') is a standard for transmitting predefined digital messages via the [[medium-frequency]] (MF), [[high-frequency]] (HF) and [[marine VHF radio|very-high-frequency]] (VHF) maritime radio systems. It is a core part of the [[Global Maritime Distress Safety System]] (GMDSS).<ref name=b35>Bréhaut (2009): 35</ref> [[File:AN ICS DSC 2 GMDSS control panel.jpg|thumbnail|A DSC [[touch screen]] control panel showing a (simulated) distress message. This unit made by ICS controls DSC messaging for VHF, MF and HF transceivers]]
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