The distress signal CQD originated from the signal CQ, expressing "seeking you," or "all stations." The signal CQ was commonly used among wireless operators -- and land-based telegraphers before them ...
The RMS Titanic leaves Belfast, 1912. * Photo: Courtesy of U.S. National Archives and Records Administration * 1904: "CQD" is adopted as the international distress signal for the operators of Marconi ...
The distress signal CQD originated from the signal CQ, expressing "seeking you," or "all stations." The signal CQ was commonly used among wireless operators -- and land-based telegraphers before them ...
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