- emergency frequency
- аварийная частота
Englsh-Russian aviation and space dictionary. - M.: Military publishing house USSR Ministry of Defence. edited by M. Murashkevich. 1974.
emergency frequency
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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
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Emergency power system — Emergency power systems are a type of system, which may include lighting, generators and other apparatus, to provide backup resources in a crisis or when regular systems fail. They find uses in a wide variety of settings from residential homes to … Wikipedia
Frequency-shift keying — Passband modulation v · d · e Analog modulation AM · … Wikipedia
Emergency Broadcast System — For the record label, see Emergency Broadcast System Records. For the multimedia group, see Emergency Broadcast Network. The Emergency Broadcast System (EBS) was an emergency warning system in the United States, used from 1963 to 1997, when it… … Wikipedia
Emergency Action Message — An Emergency Action Message (EAM) is a preformatted message that directs nuclear capable forces to execute specific Major Attack Options (MAOs) or Limited Attack Options (LAOs) in a nuclear war. Individual countries or specific regions may be… … Wikipedia
International distress frequency — An international distress frequency is a radio frequency that is designated for emergency communication by international agreement. Contents 1 History 2 Current frequencies 2.1 Digital Selective Calling frequencies 2.2 … Wikipedia
Very high frequency — (VHF) is the radio frequency range from 30 MHz to 300 MHz. Frequencies immediately below VHF are denoted High frequency (HF), and the next higher frequencies are known as Ultra high frequency (UHF). The frequency allocation is done by ITU. Common … Wikipedia
Medium frequency — Frequency range 0.3 to 3 MHz ITU Radio Band Numbers 1 2 3 4 5 6 7 8 9 10 … Wikipedia
National Emergency Alarm Repeater — The N.E.A.R. Warning Device. The National Emergency Alarm Repeater (NEAR) was a civilian emergency warning device in the United States. It was a 2 3 (5 7.5cm) square box designed to plug into a standard 110 volt power outlet to receive a special… … Wikipedia
