Editing Wireless telegraphy (section)

==Industry==
[[File: Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon (1908) (14779154931).jpg|thumb|In World War I balloons were used as a quick way to raise wire antennas for military field radiotelegraph stations.  Balloons at [[Tempelhofer Field]], Germany, 1908.]]

The International Radiotelegraph Union was unofficially established at the [[International Radiotelegraph Convention (1906)|first International Radiotelegraph Convention]] in 1906, and was merged into the [[International Telecommunication Union]] in 1932.<ref>[https://www.icao.int/secretariat/PostalHistory/icao_and_the_international_telecommunication_union.htm ICAO and the International Telecommunication Union] {{Webarchive|url=https://web.archive.org/web/20181106145108/https://www.icao.int/secretariat/PostalHistory/icao_and_the_international_telecommunication_union.htm |date=2018-11-06 }} – ICAO official website</ref> When the United States entered World War I, private radiotelegraphy stations were prohibited, which put an end to several pioneers' work in this field.<ref>{{Cite web |title=13. Radio During World War One (1914-1919) |url=https://earlyradiohistory.us/sec013.htm |access-date=2024-05-21 |website=earlyradiohistory.us}}</ref> By the 1920s, there was a worldwide network of commercial and government radiotelegraphic stations, plus extensive use of radiotelegraphy by ships for both commercial purposes and passenger messages.<ref name="Schroeder" /> The transmission of sound ([[radiotelephony]]) began to displace radiotelegraphy by the 1920s for many applications, making possible radio [[broadcasting]].<ref>{{Cite web |date=2024-05-15 |title=Broadcasting {{!}} Definition, History, Types, Systems, Examples, & Facts {{!}} Britannica |url=https://www.britannica.com/technology/broadcasting |access-date=2024-05-23 |website=www.britannica.com |language=en}}</ref> Wireless telegraphy continued to be used for private person-to-person business, governmental, and military communication, such as [[telegram]]s and [[diplomatic communications]], and evolved into [[radioteletype]] networks.<ref>{{Cite journal |date=1922-08-10 |title=Typing in Airplane Received by Radio |url=https://timesmachine.nytimes.com/timesmachine/1922/08/10/99054387.pdf |journal=The New York Times}}</ref> The ultimate implementation of wireless telegraphy was [[teleprinter|telex]], using radio signals, which was developed in the 1930s and was for many years the only reliable form of communication between many distant countries.<ref>{{Cite web |title=BT Museum Memorial Pages - Telegraphy 2 |url=http://www.samhallas.co.uk/bt_museum/telegraph-2.htm |access-date=2024-05-23 |website=www.samhallas.co.uk}}</ref> The most advanced standard, [[ITU-T|CCITT]] [[R.44]], automated both routing and encoding of messages by [[short wave]] transmissions.<ref>{{Cite web |date=1968 |title=Requirements for Telex and Gentex operation to be met by synchronous multiplex equipment described in recommendation R.44 |url=https://www.itu.int/rec/dologin_pub.asp?lang=f&id=T-REC-U.24-198811-I!!PDF-E&type=items |website=International Telecommunication Union}}</ref>

Today, due to more modern text transmission methods, Morse code radiotelegraphy for commercial use has become obsolete. On shipboard, the computer and satellite-linked [[GMDSS]] system have largely replaced Morse as a means of communication.<ref>{{Cite web |title=Radiocommunications |url=https://www.imo.org/en/OurWork/Safety/Pages/RadioCommunications-Default.aspx |website=International Maritime Organization}}</ref><ref>{{Cite web |title=Introduction/History |url=https://www.imo.org/en/OurWork/Safety/Pages/Introduction-history.aspx |website=International Maritime Organization}}</ref>