The app generates the Maidenhead Locator System also QTH or QRA grid system which is a geographic co-ordinate system used by amateur radio operators to describe their locations. Its purpose is to be concise, accurate and robust in the face of interference and adverse transmission conditions. The Maidenhead Locator System can describe locations anywhere in the world (https://en.wikipedia.org/wiki/Maidenhead_Locator_System) (http://en.wikipedia.org/wiki/Maidenhead_Locator_System).</p>
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