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註解 [修改]
- ↑ "International Morse code Recommendation ITU-R M.1677-1". itu.int. International Telecommunication Union. October 2009. goân-loē-iông tī 6 November 2012 hőng khó͘-pih. 23 December 2011 khòaⁿ--ê.
- ↑ F. S. Beechey, Electro-Telegraphy, London: E. & F. N. Spon, 1876, p. 71
- ↑ F. J. Camm, Radio Engineer's PocketBook, 2nd ed., Chemical Publishing Co., 1941, p. 72
參考 文 hèn[修改]
- Burns, R。 W。 (2004), Communications: an international history of the formative years, Institution of Electrical Engineers, ISBN 0-86341-327-7
- Freebody, J。 W。 (1959), "Historical Survey of Telegraphy", Telegraphy, London: Sir Isaac Pitman & Sons, Ltd。
參 kèn[修改]
外部 liên-ket[修改]
- Morse Code resources
- Morse codeMP3 practice files。200 hours of at increasing speeds plus an ASCII-to-CW file generator program。
- International Morse Code,Hand Sending US Army training video 1966。
- Morse Code Radio Operator Training "Technique of Hand Sending" US Navy 1944。
- Codes oftheWorld