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The QRA locator system was limited to describing European coordinates, and by the mid-1970s there was growing need for a global locator system. [3] By the time of their April 1980 meeting, in Maidenhead, England, the VHF Working Group had received twenty different proposals to replace the QRA locator grid. That devised by John Morris (G4ANB ...
The QRA locator, also called QTH locator in some publications, is an obsolete geographic coordinate system used by amateur radio operators in Europe before the introduction of the Maidenhead Locator System. As a radio transmitter or receiver location system the QRA locator is considered defunct, but may be found in many older documents.
Military Grid Reference System is the geocoordinate standard used by NATO militaries for locating points on Earth. Universal Transverse Mercator coordinate system is a map projection system for assigning coordinates to locations on the surface of the Earth. the Maidenhead Locator System, popular with radio operators.
International Postcode system using Cubic Meters (CubicPostcode.com) Maidenhead Locator System (1980) Makaney Code (2011) MapCode (2008) Military Grid Reference System; Natural Area Code; Open Location Code (2014, aka. "plus codes", Google Maps) QRA locator (1959) Universal Transverse Mercator coordinate system; verbal-id; what3words (2013 ...
See geocode system types below (of names and of grids). Hierarchy: geocode's syntax hierarchy corresponding to the spatial hierarchy of its represented entities. A geocode system can hierarchical (name or grid) or non-hierarchical. Covering: global or partial. The entities (represented by the geocodes) are in all globe (e. g. geographical ...
These codes were used by the U.S. Census Bureau, the Department of Agriculture to form milk-processing plant numbers, some cash registers during check approval, and in the Emergency Alert System (EAS). The FCC assigned additional numeric codes used with the EAS for territorial waters of the U.S., but these were not part of the FIPS standard.
An MGRS grid reference is a point reference system. When the term 'grid square' is used, it can refer to a square with a side length of 10 km (6 mi), 1 km, 100 m (328 ft), 10 m or 1 m, depending on the precision of the coordinates provided.
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