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Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1] – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the ...
The VHF Data Link or VHF Digital Link (VDL) is a means of sending information between aircraft and ground stations (and in the case of VDL Mode 4, other aircraft). Aeronautical VHF data links use the band 117.975–137 MHz assigned by the International Telecommunication Union to Aeronautical mobile (R) service. There are ARINC standards for ...
Model XAE IFF kit, the first radio recognition IFF system in the U.S. Identification, friend or foe (IFF) is a combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that identifies the broadcaster. IFF systems usually use radar frequencies, but ...
King Leopold II, whose rule of the Congo Free State was marked by severe atrocities, violence and major population decline.. Even before his accession to the throne of Belgium in 1865, the future king Leopold II began lobbying leading Belgian politicians to create a colonial empire in the Far East or in Africa, which would expand and enhance Belgian prestige. [2]
Morse code is called the original digital mode. Radio telegraphy, designed for machine-to-machine communication is the direct on / off keying of a continuous wave carrier by Morse code symbols, often called amplitude-shift keying or ASK, may be considered to be an amplitude modulated mode of communications, and is rightfully considered the first digital data mode.
FLARM Logo. FLARM is a proprietary electronic system used to selectively alert pilots to potential collisions between aircraft. It is not formally an implementation of ADS-B, as it is optimized for the specific needs of light aircraft, not for long-range communication or ATC interaction. FLARM is a portmanteau of "flight" and "alarm".
A 2021 study of over 300 retired NFL players who reported using prescription opioids during their careers found that just over one-quarter (26.2 percent) used prescription opioids in the past 30 ...
Awareness. (film) Awareness is a 2023 Spanish-American science-fiction action thriller film directed by Daniel Benmayor [ca], who also co-wrote the screenplay with Iván Ledesma, and Manuel Burque. It stars Carlos Scholz alongside María Pedraza, Pedro Alonso, Lela Loren, and Óscar Jaenada.