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QRA locator The QRA locator, also called QTH locator in some publications, is an obsolete geographic coordinate system used by amateur radio operators in Europe before the introduction of the Maidenhead Locator System. As a radio transmitter or receiver location system the QRA locator is considered defunct, but may be found in many older documents. == History == The QRA locator system in the 4-character format was introduced at a meeting of the VHF Working Group in The Hague in October 1959. The QRA locator was further developed with the addition of the fifth character at the Region 1 Conference in Malmö (1963). The QRA locator was officially adopted by IARU Region 1 in 1966 and was renamed "QTH-locator" a year later.〔(【引用サイトリンク】title=The Locator System )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「QRA locator」の詳細全文を読む
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