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  2. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...

  3. List of Singapore MRT stations - Wikipedia

    en.wikipedia.org/wiki/List_of_Singapore_MRT_stations

    20 November 2005 – 15 January 2006. 12 September 2006. Downtown Line Stage 1 – 2, Caldecott and Haw Par Villa stations [8] 30 July 2008 – 26 August 2008. November 2008 – March 2009. 17 June 2009. Downtown Line Stage 3 [9] [10] 13 December 2010 – 12 January 2011. 1 June 2011 – 15 July 2011.

  4. List of ISO 3166 country codes - Wikipedia

    en.wikipedia.org/wiki/List_of_ISO_3166_country_codes

    See the ISO 3166-3 standard for former country codes. British Virgin Islands – See Virgin Islands (British) . Burma – See Myanmar . Cape Verde – See Cabo Verde . Caribbean Netherlands – See Bonaire, Sint Eustatius and Saba . China, The Republic of – See Taiwan (Province of China) . Democratic People's Republic of Korea – See Korea ...

  5. List of tz database time zones - Wikipedia

    en.wikipedia.org/wiki/List_of_tz_database_time_zones

    List of tz database time zones. The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2024a of the tz database. [2]

  6. ISO 3166-1 - Wikipedia

    en.wikipedia.org/wiki/ISO_3166-1

    ISO 3166-1 ( Codes for the representation of names of countries and their subdivisions – Part 1: Country codes) is a standard defining codes for the names of countries, dependent territories, and special areas of geographical interest. It is the first part of the ISO 3166 standard published by the International Organization for Standardization .

  7. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.

  8. Safety on the Mass Rapid Transit (Singapore) - Wikipedia

    en.wikipedia.org/wiki/Safety_on_the_Mass_Rapid...

    The Emergency Stop Plunger, found in all MRT stations, enables trains to be stopped before entering stations in case of an emergency. The safety of the Mass Rapid Transit (MRT) system in Singapore was questioned by the public after several accidents on the system during the 1980s and 1990s. Most problems have been addressed, and many safety ...

  9. List of equipment of the Republic of Singapore Navy - Wikipedia

    en.wikipedia.org/wiki/List_of_equipment_of_the...

    2. Replacing some of the Challenger -class submarine, upgraded in 2016 till 2019, which includes optronic periscopes, combat management systems, sonars, countermeasure systems, digital data-links and attack capabilities which also allows the firing of new torpedoes and anti-ship missiles. [6] Challenger. Submarine. RSS Conqueror. RSS Chieftain.

  10. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.

  11. List of Singapore MRT and LRT lines - Wikipedia

    en.wikipedia.org/wiki/List_of_Singapore_MRT_and...

    Codes Elevated At-grade Underground Contemporary Retired North South Line East West Line: Phase 1 22 October 1983; 40 years ago () 7 November 1987; 36 years ago () — 6 km: Yio Chu Kang - Toa Payoh NS15 - NS19 N10 - N6 2 (40%) 1 (20%) 2 (40%) Total cost of Phases 1 and 2 of NSEWL: S$5 billion