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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 triggering radar, providing range, bearing and ...
ISO 3166-1 alpha-3 – three-letter country codes which allow a better visual association between the codes and the country names than the alpha-2 codes.
Diagram of a telegraph key used to send messages in Morse code. Procedural signs or prosigns are shorthand signals used in Morse code telegraphy, for the purpose of simplifying and standardizing procedural protocols for landline and radio communication. The procedural signs are distinct from conventional Morse code abbreviations, which consist ...
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The 4-8-4 wheel arrangement was a progression from the 4-8-2 Mountain type and, like the 2-8-4 Berkshire and 4-6-4 Hudson types, an example of the "Super Power" concept in steam locomotive design that made use of the larger firebox that could be supported by a four-wheel trailing truck, which allowed greater production of steam.
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, the 4-8-4+4-8-4 is a Garratt locomotive. The wheel arrangement is effectively two 4-8-4 locomotives operating back to back, with the boiler and cab suspended between the two engine units. Each engine unit has two pairs of leading wheels in a leading bogie, followed by four coupled pairs of driving wheels ...
Wicked Little Letters is a 2023 British black comedy mystery film directed by Thea Sharrock, written by Jonny Sweet, and starring Olivia Colman, Jessie Buckley, Anjana Vasan, Joanna Scanlan, Gemma Jones, Malachi Kirby, Lolly Adefope, Eileen Atkins, and Timothy Spall.
A Quiet Place Part II had its world premiere at the Lincoln Center in New York City on March 8, 2020. Paramount Pictures originally set its theatrical release date for March 20, 2020, but postponed it to September 4, 2020 due to the COVID-19 pandemic. It was then postponed for April 23, 2021.