Tag Archives: CQD

January 7, 1904

On January 7, 1904, the distress signal “CQD” was established for Morse code and the wireless radio. Two years later the distress signal was changed to “SOS”. Why? It was claimed that SOS was faster and easier to send. That was true. Also, you could make a funny saying with the letters, like “Same Old … Continue reading

Posted in 20th Century, Historical Facts | Tagged , , , | 1 Comment