Quote:
Originally Posted by privateer
... in 1908, by international agreement, a signal made up of three dits, three dahs and three dits was adopted as the one most easily transmitted and understood. By coincidence, this signal is translatable as SOS.
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Here is the citation. Although the agreement was signed in 1906, As Privateer stated, it became in force in 1908
INTERNATIONAL WIRELESS TELEGRAPH CONVENTION November 3, 1906
SERVICE REGULATIONS ANNEXED TO THE INTERNATIONAL WIRELESS TELEGRAPH CONVENTION. 3 November, 1906
Article XVI
Quote:
Ships in distress shall use the following signal:
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http://earlyradiohistory.us/1906conv.htm
Trivia questions
What was the first ship to use CQD?
What was the first ship to use SOS [no it was not the Titanic]
And what did RRR mean?
