![]() ![]() This system was therefore replaced by a rival system devised by John Morris, G4ANB and adopted at a meeting of VHF managers in Maidenhead, England in 1980. While a fifth character was added at the 1963 Region 1 Conference in Malmö (1963) as a further sub-division, this five-character QRA-Locator system remained unable to cover the entire globe without codes being repeated. Two letters would indicate an individual grid square this would be followed by two numbers to subdivide the grid into smaller squares. The original QRA-Locator system, devised in Germany and adopted by the VHF Working Group in The Hague in October 1959, was based on geographical longitude and latitude using a grid with an origin of (0°W, 40° N) to provide coverage of Europe. In order to reduce the length of a pair of geographic co-ordinates when transmitted in Morse code, various schemes have been used to abbreviate grid square identifiers based on latitude and longitude. A more systematic approach would be to use a latitude and longitude grid, such as WGS84. ![]() The zone systems represent an arbitrary division a simple algorithm would not readily be able to estimate the distance between two points based on a zone number pair. ![]()
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