Wireless telegraphy
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Wireless telegraphy is a historical term used today to apply to early radio telegraph communications techniques and practices, particularly those used during the first three decades of radio (1887 to 1920) before the term radio came into use.
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James Bowman Lindsay James Bowman Lindsay home.frognet.net/~ejcov/lindsay3.html - Web |
Sparks Telegraph Key Review Sparks Telegraph Key Review www.zianet.com/sparks/ - Web |
Principles of Radiotelegraphy (1919) Principles of Radiotelegraphy (1919) www.archive.org/.../principlesofradi00jansrich.pdf - Web |
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