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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. Maidenhead Locator System - Wikipedia

    en.wikipedia.org/wiki/Maidenhead_Locator_System

    The Maidenhead Locator System (a.k.a. QTH Locator and IARU Locator) is a geocode system used by amateur radio operators to succinctly describe their geographic coordinates, which replaced the deprecated QRA locator, which was limited to European contacts. [1] Its purpose is to be concise, accurate, and robust in the face of interference and ...

  4. Reverse geocoding - Wikipedia

    en.wikipedia.org/wiki/Reverse_geocoding

    Reverse geocoding is the process of converting a location as described by geographic coordinates (latitude, longitude) to a human-readable address or place name. It is the opposite of forward geocoding (often referred to as address geocoding or simply "geocoding"), hence the term reverse. Reverse geocoding permits the identification of nearby ...

  5. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [1] As of July 2023, California has 38 active area codes. Stockton, Modesto, Merced, Turlock; the northern San Joaquin Valley and the central Sierra ...

  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. Geographic Locator Codes - Wikipedia

    en.wikipedia.org/wiki/Geographic_Locator_Codes

    Geographic Locator Codes. Worldwide Geographic Location Codes (GLCs) list the number and letter codes federal agencies should use in designating geographic locations anywhere in the United States or abroad in computer programs. Use of standard codes facilitates the interchange of machine-readable data from agency to agency within the federal ...

  8. List of Kentucky area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Kentucky_area_codes

    The state of Kentucky is served by the following area codes: 270/364, which serve western Kentucky and the western half of South Central Kentucky. 502, which serves the Louisville and Frankfort areas. 606, which serves eastern Kentucky, including the Eastern Coalfield. 859, which serves the Lexington area and Northern Kentucky.

  9. List of Tennessee area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Tennessee_area_codes

    List of Tennessee area codes. Map of all Tennessee area codes. 423 - Chattanooga, Johnson City, Kingsport, Bristol: Initially split from 615 in 1995. 615 and 629 (overlay) - Greater Nashville, including Murfreesboro: 615 initially split from 901 in a 1954 flash-cut. The 629 overlay for the entire area code was made effective in 2015.

  10. Natural Area Code - Wikipedia

    en.wikipedia.org/wiki/Natural_Area_Code

    Natural Area Code. The Natural Area Code, or Universal Address, is a proprietary [1] geocode system for identifying an area anywhere on the Earth, or a volume of space anywhere around the Earth. The use of thirty alphanumeric characters instead of only ten digits makes a NAC shorter than its numerical latitude / longitude equivalent.

  11. List of Alabama area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Alabama_area_codes

    The U.S. state of Alabama is served by six area codes. When the North American Numbering Plan was first defined in 1947, Alabama was a single numbering plan area (NPA), with area code 205. This configuration existed until 1995 when area code 334 was added for the southeastern part of the state. In 1998, area code 256 was assigned for northern ...