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http://dbpedia.org/resource/Aircraft_emergency_frequency
http://dbpedia.org/ontology/abstract The aircraft emergency frequency (also knoThe aircraft emergency frequency (also known as GUARD) is a frequency used on the aircraft band reserved for emergency communications for aircraft in distress. The frequencies are 121.5 MHz for civilian, also known as International Air Distress (IAD) or VHF Guard, and 243.0 MHz—the second harmonic of VHF guard—for military use, also known as Military Air Distress (MAD) or UHF Guard. Earlier emergency locator transmitters (ELTs) used the guard frequencies to transmit, but an additional frequency of 406 MHz is used by a more modern emergency locator transmitter.more modern emergency locator transmitter. , 航空应急频率(英語:aircraft emergency frequency,也称G航空应急频率(英語:aircraft emergency frequency,也称GUARD)是航空波段上保留的一个用于飞机通信的频率。民用的该频率为121.5 MHz,也称国际航空遇险信号(International Air Distress,IAD)或甚高频守听(VHF Guard);而243.0 MHz则供军事用途,也称军用航空遇险信号(Military Air Distress,MAD)或特高频守听(UHF Guard)。早期的(ELT)使用守听频率发信,但更现代的应急定位发射机已改用406 MHz频率。早期的(ELT)使用守听频率发信,但更现代的应急定位发射机已改用406 MHz频率。 , 121,5 MHz ist eine Funkfrequenz des Mobilen Flugfunkdienstes (R) (117,975 bis 136 MHz) im VHF-Frequenzbereich. Gesendet und empfangen wird in der Betriebsart Amplitudenmodulation. Im Bereich der Flugsicherung wird sie auch als Guard bezeichnet. , La fréquence GUARD (121,5 MHz) est la fréqLa fréquence GUARD (121,5 MHz) est la fréquence VHF aéronautique d'urgence dans le monde entier. La fréquence aéronautique auxiliaire 123,1 MHz (auxiliaire de la fréquence aéronautique d'urgence 121,5 MHz) est destinée à être utilisée par les stations du service mobile aéronautique et par d'autres stations mobiles et terrestres engagées dans des opérations coordonnées de recherche et sauvetage. Les stations mobiles du service mobile maritime peuvent communiquer avec les stations du service mobile aéronautique sur la fréquence aéronautique d'urgence 121,5 MHz exclusivement pour la détresse et l'urgence et sur la fréquence aéronautique auxiliaire 123,1 MHz pour les opérations coordonnées de recherche et sauvetage, en émission de classe A3E pour les deux fréquences. Elles doivent alors se conformer aux arrangements particuliers conclus par les gouvernements intéressés et régissant le service mobile aéronautique. régissant le service mobile aéronautique.
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http://dbpedia.org/property/description Transmission of a distress beacon on 121.5 MHz and 243 MHz
http://dbpedia.org/property/filename Radio beacon of distress on 121,5 MHz.ogg
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http://dbpedia.org/property/title Modulation of a radio beacon of distress
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rdfs:comment La fréquence GUARD (121,5 MHz) est la fréqLa fréquence GUARD (121,5 MHz) est la fréquence VHF aéronautique d'urgence dans le monde entier. La fréquence aéronautique auxiliaire 123,1 MHz (auxiliaire de la fréquence aéronautique d'urgence 121,5 MHz) est destinée à être utilisée par les stations du service mobile aéronautique et par d'autres stations mobiles et terrestres engagées dans des opérations coordonnées de recherche et sauvetage. Les stations mobiles du service mobile maritime peuvent communiquer avec les stations du service mobile aéronautique sur la fréquence aéronautique d'urgence 121,5 MHz exclusivement pour la détresse et l'urgence et sur la fréquence aéronautique auxiliaire 123,1 MHz pour les opérations coordonnées de recherche et sauvetage, en émission de classe A3E pour les deux fréquences. Elles doivent alors se coneux fréquences. Elles doivent alors se con , The aircraft emergency frequency (also knoThe aircraft emergency frequency (also known as GUARD) is a frequency used on the aircraft band reserved for emergency communications for aircraft in distress. The frequencies are 121.5 MHz for civilian, also known as International Air Distress (IAD) or VHF Guard, and 243.0 MHz—the second harmonic of VHF guard—for military use, also known as Military Air Distress (MAD) or UHF Guard. Earlier emergency locator transmitters (ELTs) used the guard frequencies to transmit, but an additional frequency of 406 MHz is used by a more modern emergency locator transmitter.more modern emergency locator transmitter. , 航空应急频率(英語:aircraft emergency frequency,也称G航空应急频率(英語:aircraft emergency frequency,也称GUARD)是航空波段上保留的一个用于飞机通信的频率。民用的该频率为121.5 MHz,也称国际航空遇险信号(International Air Distress,IAD)或甚高频守听(VHF Guard);而243.0 MHz则供军事用途,也称军用航空遇险信号(Military Air Distress,MAD)或特高频守听(UHF Guard)。早期的(ELT)使用守听频率发信,但更现代的应急定位发射机已改用406 MHz频率。早期的(ELT)使用守听频率发信,但更现代的应急定位发射机已改用406 MHz频率。 , 121,5 MHz ist eine Funkfrequenz des Mobilen Flugfunkdienstes (R) (117,975 bis 136 MHz) im VHF-Frequenzbereich. Gesendet und empfangen wird in der Betriebsart Amplitudenmodulation. Im Bereich der Flugsicherung wird sie auch als Guard bezeichnet.
rdfs:label Fréquence GUARD , 121,5 MHz , Aircraft emergency frequency , 航空应急频率
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