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bn:00680383n
Noun Named Entity
Categories: Emergency communication, History of telecommunications, Amateur radio history, Telecommunications-related introductions in 1904, Rescue
EN
CQD  C.Q.D.
EN
CQD is one of the first distress signals adopted for radio use. Wikipedia
Definitions
Relations
Sources
EN
CQD is one of the first distress signals adopted for radio use. Wikipedia
Morse code distress call in the early 20th century Wikidata
IS A
distress signal
Morse code abbreviations
Wikipedia
EN
CQD
Wikidata
EN
CQD
Wikipedia Redirections
EN
C.Q.D.

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