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  2. Maidenhead Locator System - Wikipedia

    en.wikipedia.org/wiki/Maidenhead_Locator_System

    Maidenhead locators are also commonly referred to as QTH locators, grid locators or grid squares, although the "squares" are distorted on any non-equirectangular cartographic projection. Use of the terms QTH locator and QRA locator was initially discouraged, as it caused confusion with the older QRA locator system.

  3. Template:Coor Maidenhead - Wikipedia

    en.wikipedia.org/wiki/Template:Coor_Maidenhead

    This template takes a pair of geographic coordinates and converts them into a Maidenhead grid square. Use: {{Coor Maidenhead|lat|lon|link}} Where: lat is latitude. lon is longitude. link, when yes, puts the grid square in a link to the list of map sources.

  4. Military Grid Reference System - Wikipedia

    en.wikipedia.org/wiki/Military_Grid_Reference_System

    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.

  5. QRA locator - Wikipedia

    en.wikipedia.org/wiki/QRA_locator

    Maidenhead locator square "IO91", which covers part of Greater London, belongs to QRA locator square "ZL". The main squares are subdivided to 80 smaller squares, each one covering 12' by 7'30", and which are numbered from 01 to 80. The small squares are numbered from North to South and West to East. The northwest corner of the main square is ...

  6. Grid square - Wikipedia

    en.wikipedia.org/wiki/Grid_square

    The term Grid square has multiple uses Maidenhead Locator System, a Geocode system used by radio amateurs worldwide; A 1 km 2 square defined by a National grid reference system, see Projected coordinate system#Grid reference encodings; A neighbourhood in Milton Keynes, England, see Milton Keynes#Grid roads and grid squares

  7. Projected coordinate system - Wikipedia

    en.wikipedia.org/wiki/Projected_coordinate_system

    The extra two digits describe a position within the 1-kilometre square. Imagine (or draw or superimpose a Romer) a further 10x10 grid within the current grid square. Any of the 100 squares in the superimposed 10×10 grid can be accurately described using a digit from 0 to 9 (with 0 0 being the bottom left square and 9 9 being the top right square).

  8. Maidenhead - Wikipedia

    en.wikipedia.org/wiki/Maidenhead

    Maidenhead was home to the amateur radio conference that agreed on the Maidenhead Locator System standard in 1980. It is located in grid square IO91pm. The average house price in Maidenhead in January 2021 was £540,940. [30]

  9. Open Location Code - Wikipedia

    en.wikipedia.org/wiki/Open_Location_Code

    Each code describes an area bounded by two parallels and two meridians out of a fixed grid, identified by the southwest corner and its size. The largest grid has blocks of 20 by 20 degrees (9 rows and 18 columns), and is divided in 20 by 20 subblocks up to four times. From that level onwards, division is in 5 by 4 subblocks.