Which distress signal did the S.O.S replace?

Senior Moments

October 3rd was the 97th anniversary of the SOS international distress radio signal. According to a Times article, the SOS replaced the CQD distress call on the 3rd of October 1906 at the International Wireless Telegraphic Conference in Berlin. The SOS was actually brought into use in 1908, but it's adoption by maritime stations was very slow. So slow in fact that at the time of the sinking of the Titanic on the 15th of April 1912, her radio operator, Harold Bride, used both the old 'CQ Distress' and the then newer SOS signals. As an aside, the SOS combination of letters was chosen because the "di di dit, dah dah dah, di di dit" sound was easily recognizable. It was only later that the suggestion was made that it might stand for 'Save Our Souls'. Nov 10 03, 10:25 AM

brian59

So, it wasn't waving your arm and making gurgling noises? Nov 14 03, 2:05 AM

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When and where was the S.O.S. distress signal first used? What was the name of the rescue boat that responded to the Titanic's distress signal? What is the origin of 'mayday' as a distress signal in radio communications involving shipping and aviation? From where comes the distress term "Mayday"?

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