Each square is identified by a diferent two-letter code. As will be seen by the world map on the next page, the world is divided into a grid of squares that are ten degrees of latitude high by twenty degrees of longitude wide. First proposed at a conference in Maidenhead, England in 1980 (and hence sometimes called Maidenhead Locators), grid squares allow three levels of precision (two, four or six character) to define a station's latitude and longitude. Grid Squares are being used more and more by Radio Amateurs throughout the world to identify the location of their stations. This page introduces the world Grid Locator system, and discusses how to find out what your own Grid Locator is.
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