Telegraf nirkabel
Telegraf nirkabel adalah telegrafi elektrik yang tidak membutuhkan kabel untuk menghubungkan masing-masing perangkat. Telegraf nirkabel lebih dikenal dalam menyebutkan sistem radio telegrafi awal yang menggunakan komunikasi dalam bentuk gelombang radio. Meskipun saat pertama kali istilah ini muncul pada akhir abad ke 19 istilah ini juga merujuk pada berbagai teknik eksperimental dalam mengomunikasikan telegraf secara nirkabel, seperti fotolistrik dan telegrafi induksi.[1][2]
Telegrafi nirkabel berarti kode morse yang di transmisikan melalui gelombang elektromagnetis, yang awalnya disebut 'Gelombang Hertz' dan sejak tahun 1910 disebut secara umum sebagai gelombang radio,[3] membuatnya kemudian disebut sebagai readiotelegraf.
Referensi
- ^ Maver, William Jr. (1903). American Telegraphy and Encyclopedia of the Telegraph: Systems, Apparatus, Operation. New York: Maver Publishing Co. hlm. 333.
- ^ Steuart, William Mott; et al. (1906). Special Reports: Telephones and Telegraphs 1902. Washington D.C.: U.S. Bureau of the Census. hlm. 118–119.
- ^ earlyradiohistory.us, UNITED STATES EARLY RADIO HISTORY THOMAS H. WHITE, s e c t i o n 22, Word Origins-Radio
Pranala luar
- John Joseph Fahie, A History of Wireless Telegraphy, 1838-1899: including some bare-wire proposals for subaqueous telegraphs, 1899 (first edition).
- John Joseph Fahie, A History of Wireless Telegraphy: including some bare-wire proposals for subaqueous telegraphs, 1901 (second edition).
- John Joseph Fahie, A History of Wireless Telegraphy: including some bare-wire proposals for subaqueous telegraphs, 1901 (second edition, in HTML format).
- Alfred Thomas Story, The Story of Wireless Telegraphy, 1904 [1]
- James Bowman Lindsay A short biography on his efforts on electric lamps and telegraphy.
- Sparks Telegraph Key Review
- Principles of Radiotelegraphy (1919)
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