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distress signal |
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distress signal [də′stres ‚sig·nəl] (communications) An international signal used when a ship, aircraft, or other vehicle is threatened by grave and imminent danger and requests immediate assistance; examples are special radiotelegraph and radiotelephone signals or special signal flags or flares. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The Pulkovo pilots sent a distress signal about 2 min. Both are DSC capable and when connected to a GPS, allowing you to send a one-button distress signal or exchange position information with other vessels. A rudimentary distress signal, such as an SOS in Morse code, on a narrow frequency band might be easier to extract from the radio clutter than a plea for help spoken in words. |
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