1. telegraph key (switching device used to send Morse code)
2. Telegraph keyTelegraph key is a general term for any switching device used primarily to send Morse code. Similar keys are used for all forms of manual telegraphy, such as in electrical telegraph and radio telegraphy.
Read “Telegraph key” on English Wikipedia
Read “電鍵” on Japanese Wikipedia
Read “Telegraph key” on DBpedia
Read “Telegraph key” on English Wikipedia
Read “電鍵” on Japanese Wikipedia
Read “Telegraph key” on DBpedia
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