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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 ...
The DEW data center (callsign DYE, [1) at Cape Dyer on the eastern tip of Baffin Island was 1 of 4 "Canadian Main stations" (cf. PIN, CAM, FOX) and in January 1959, the station's manning switched to an RCAF Squadron Leader being the "Officer-in-Charge" as "DEW Sector Commander", 1 of 5 RCAF officers at DYE (2 additional officers were
The US Congress authorized the EPA to dedicate funds to assist states and nonprofits with the costs of lead service line removal under Section 50105 of the Safe Drinking Water Act. [143] Collected rainwater from roof runoff used as potable water may contain lead, if there are lead contaminants on the roof or in the storage tank. [25]
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.
In short, I think you would need to add information about why it might be a good presumption that flight 655 would be monitoring 121.5 and cite a reliable secondary source to support an assertion about this, rather than implying that the monitoring of 121.5 might have been required (or even usual) practice which flight 655 ought to have been ...
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).