What code was used in the navy before introducing SOS?

CQD
CDQ
DCQ
DSC
CQD is one of the first distress signals adopted for radio use. Although used world­wide by Marconi op­er­a­tors, CQD was never adopted as an in­ter­na­tion­al stan­dard, since it could be mistaken for a general call "CQ" if the re­cep­tion were poor. Ger­many's Notze­ichen distress signal of three­-­dot­s/three­-­dash­es/three­-­dots was adopted as the in­ter­na­tion­al Morse code distress signal. (This distress signal soon became known as "SOS" .

Answers distribution

CQD
CDQ
DCQ
DSC
answers
flagPoland
25%
20%
14%
39%
382
flagUnknown
19%
11%
5%
62%
51

Gender

men24%
women24%
CQD
24%
24%
CDQ
14%
22%
DCQ
12%
11%
DSC
48%
42%

Language versions

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What code was used in the navy before introducing SOS?
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Details

Author: Tschuka
Illustration: wikimedia
Read more: wikipedia CQD
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