Grid Map

Grid Squares are being used more and more by Radio Amateurs throughout the world to identify the location of their stations. 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. As will be seen by the world map on the below, the world is divided into a grid of squares that are ten degrees of latitude high by twenty degrees of longitude wide. Each square is identified by a diferent two-letter code.

The easiest way to find out your own Grid Locator is by using one of the following resources:

  • Amsat Grid Conversion Page An online resource on the Amsat website that will convert Latitude/Longitude to Grid, and from Grid back to Latitude/Longitude again.

  • WinGrid Ver3.6 This program calculates grid squares from latitudes and longitudes, the reverse, and calculates distances and headings from two sets of lat/long or grid squares. The program saves your home QTH information, converts from miles to kilometers, and allows switching between "DD MM SS" and "DD.ddddd" formats.

    Grid Squares

    Grid Square Locator Index

    ITU Zones

    ITU Zones Index

    ITU Regions

    ITU Regions

    Courtesy: JF9EXF , EI8IC & F6FVY