radiotelephone distress signal

См. также в других словарях:

• distress signal — 1. a signal used, or designed to be used, by persons in peril, for the purpose of summoning aid, indicating their position, etc., as a radio code sign, aerial flare, flag hoist, or the like. Cf. distress call (def. 1). 2. an indication, esp. a… …   Universalium

• Distress radiobeacon — PLB redirects here. For other uses, see PLB (disambiguation). Emergency position indicating radio beacons or EPIRBs Distress radio beacons, also known as emergency beacons, ELT or EPIRB, are tracking transmitters which aid in the detection and… …   Wikipedia

• International maritime signal flags — The set of signal flags on the bridge of the Liberty ship SS Jeremiah O Brien The system of international maritime signal flags is one system of flag signals representing individual letters of the alphabet in signals to or from ships. It is a… …   Wikipedia

• Mayday — /may day /, n. the international radiotelephone distress signal, used by ships and aircraft. [1925 30; < F (venez) m aider (come) help me!] * * * …   Universalium

• Pan-pan — A call of pan pan [http://www.tc.gc.ca/MarineSafety/TP/Tp9878/menu.htm#8 Safety and Distress Radiotelephone Procedures] ] means there is an emergency on board a boat, ship, aircraft or other vehicle but that, for the time being at least, there is …   Wikipedia

• Marine VHF radio — A standard handheld maritime VHF, mandatory on larger vessels under the GMDSS rules …   Wikipedia

• Aircraft emergency frequency — The aircraft emergency frequency (also known as guard) is a frequency used on the aircraft radio band reserved for emergency communications for aircraft in distress. The frequencies are 121.5 MHz for civilian, also known as International Air… …   Wikipedia

• MV Joyita — was a merchant vessel from which 25 passengers and crew mysteriously disappeared in the South Pacific in 1955. Vessel description and historyVessel constructionThe 69 foot (21 m) wooden ship was built in 1931 as a luxury yacht by the Wilmington… …   Wikipedia

• Cospas-Sarsat — Logo of Cospas Sarsat Logo as used until 1992 Cospas Sa …   Wikipedia

• Morse code — Chart of the Morse code letters and numerals Morse code is a method of transmitting textual information as a series of on off tones, lights, or clicks that can …   Wikipedia

• Mobile telephony — Mobile phone tower Mobile telephony is the provision of telephone services to phones which may move around freely rather than stay fixed in one location. Mobile phones connect to a terrestrial cellular network of base stations (cell sites),… …   Wikipedia