![]() ![]() Maidenhead Locator System - Wikipedia, the free encyclopedia. The Maidenhead Locator System is a geographic co- ordinate system used by amateur radio operators. John Morris, G4. ANB, originally devised the system, and a group of VHF managers, meeting in Maidenhead, England in 1. The Maidenhead Locator System replaces the. Maidenhead locators are used as part of the formulas for scoring in many VHF amateur radio contests. Grid locators are also the. A complete program in BASIC called. The Maidenhead Locator System replaces the older QRA locator system with one that is usable outside Europe. Use of the terms QTH locator and QRA locator was initially discouraged, as it caused confusion with the older QRA locator system. The only abbreviation recommended to indicate a Maidenhead reference in Morse code and radio teleprinter transmission was . This position information is presented in a limited level of precision to limit the amount of characters needed for its transmission using voice, Morse code, or any other operating mode. These zones are encoded with the letters . ![]() This is where the alternative name . Each of these squares represents 1. These are encoded into a second pair of letters, often (but not always) presented in lowercase. Again, to make manual calculations from degrees and minutes easier, 2. The letters used are . To give an example, W1. AW, the American Radio Relay League's Hiram Percy Maxim Memorial Station in Newington, Connecticut, is found in grid locator . Two points within the same Maidenhead subsquare are always less than 1. Maidenhead locator can give significant precision from just six easily transmissible characters. Johannesburg - Unit five of the new Medupi power station near Lephalale in Limpopo was was synchronised to the national power grid on Thursday, becoming the second of the power station's six units to come on stream, Eskom said. National Grid Small Business Program. Buyers Alliance is a partnership between National Grid and Munro Distributing which offers National Grid business customers the opportunity to reduce energy costs and improve their. Cooperative Agreements Program. Fifty States Initiative. Geospatial Line of Business. How to Read a United States National Grid (USNG) Spatial Address Home; United States National Grid. NPR delivers breaking national and world news. Also top stories from business, politics, health, science, technology, music, arts and culture. Subscribe to podcasts and RSS feeds. The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. Such precision has uses in very short communication spans. Beyond this, no common definition exists to extend the system further into even smaller squares. Most often the extending is done by repeating alternating subsquare and square rules (base numbers 2. However, other bases for letter encodings have also been observed, and therefore such extended extended locators might not be compatible. The Maidenhead locator system has been explicitly based on the WGS 8. As a result, stations very near the edges of squares at denoted precision may have changed their locators when changing over to the use of WGS 8. To summarise: Character pairs encode longitude first, and then latitude. ![]() The first pair (a field) encodes with base 1. More precise position reports are very rarely used. ![]() Use by radio amateurs. Maidenhead locators are used as part of the formulas for scoring in many VHF amateur radio contests. Grid locators are also the basis of earning many awards like the American Radio Relay League's VHF/UHF Century Club, URE TTLOC, etc. This results in a small error in distance, but makes calculations simpler and, given the inherent imprecision in the used input data, it is not the biggest error source. Hardware and software support. Perl supports conversion between geographical coordinates and Maidenhead locators in module Ham: :Locator by Andy Smith, available on CPAN. Garmin GPS- 1. 2) have the option to display positions in Maidenhead Locator format. Eckersley, G4. FTJ (1. Amateur Radio Operating Manual (third edition). Potters bar, UK: Radio Society of Great Britain. Newington, CT,: The American Radio Relay League: 2. Retrieved 1. 0 September 2. Amateur Radio Software. Potters Bar, UK: Radio Society of Great Britain. Newington, CT: American Radio Relay League: 3. Burlingame, N7. CFO (2. Retrieved 9 September 2. Maps with Maidenhead Locator grid. The American Radio Relay League, Inc, Newington, CT, USA, 2. IARU Locator of Europe, The Radio Society of Great Britain, Potters Bar, UK, 1. IARU Locator of Western Europe (scale 1: 2,0. The Radio Society of Great Britain, Potters Bar, UK, 1. ARRL Amateur Radio Map of North America, The American Radio Relay League, Newington, CT, USA, 2.
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