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The aircraft emergency frequency (also known in the USA 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), International Aeronautical Emergency Frequency, [1] or VHF Guard, [1] and 243.0 MHz—the second harmonic of VHF guard—for military ...
It is used by some civilian emergency locator beacons; however, the Cospas-Sarsat system no longer monitors the frequency. 243 MHz for NATO military aircraft emergency frequencies 406 MHz to 406.1 MHz is used by the Cospas-Sarsat international satellite-based search and rescue (SAR) distress alert detection and information distribution system
Overview diagram of COSPAS-SARSAT communication system used to detect and locate ELTs, EPIRBs, and PLBs First generation EPIRB emergency locator beacons. An emergency position-indicating radiobeacon (EPIRB) is a type of emergency locator beacon for commercial and recreational boats, a portable, battery-powered radio transmitter used in emergencies to locate boaters in distress and in need of ...
Lyman-alpha, typically denoted by Ly-α, is a spectral line of hydrogen (or, more generally, of any one-electron atom) in the Lyman series. It is emitted when the atomic electron transitions from an n = 2 orbital to the ground state ( n = 1), where n is the principal quantum number .
Congressman Larry McDonald. The aircraft flying as Korean Air Lines Flight 007 departed from Gate 15 of John F. Kennedy International Airport, New York City, on August 31, 1983, at 00:25 EDT (04:25 UTC), bound for Kimpo International Airport in Gangseo District, Seoul, 35 minutes behind its scheduled departure time of 23:50 EDT, August 30 (03:50 UTC, August 31).
California (/ ˌ k æ l ɪ ˈ f ɔːr n j ə /) is a state in the Western region of the United States that lies on the Pacific Coast.It borders Oregon to the north, Nevada and Arizona to the east, and shares an international border with the Mexican state of Baja California to the south.
Miley Ray Cyrus (/ ˈ m aɪ l i ˈ s aɪ r ə s / MY-lee SY-rəs, born Destiny Hope Cyrus; November 23, 1992) is an American singer, songwriter, and actress.Regarded as a pop icon, Cyrus has been recognized for her evolving artistry and image reinventions.
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. [1] [2] Modern science is typically divided into two or three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the social sciences (e.g., economics, psychology, and sociology), which ...