Editing Guglielmo Marconi (section)

====Continuing work====
[[File:Marconi Wireless Telegraph 1913 x.jpg|thumb|Share of the Marconi Wireless Telegraph Company of America, issued 20 August 1913]]
Over the years, the Marconi companies gained a reputation for being technically conservative, in particular by continuing to use inefficient spark-transmitter technology, which could be used only for radio-telegraph operations, long after it was apparent that the future of radio communication lay with [[continuous-wave]] transmissions which were more efficient and could be used for audio transmissions. Somewhat belatedly, the company did begin significant work with continuous-wave equipment beginning in 1915, after the introduction of the oscillating vacuum tube (valve). The [[New Street Works]] factory in [[Chelmsford]] was the location for the first entertainment radio [[Broadcasting|broadcast]]s in the [[United Kingdom]] in 1920, employing a vacuum tube transmitter and featuring [[Dame Nellie Melba]]. In 1922, regular entertainment broadcasts commenced from the [[Marconi Research Centre]] at [[Great Baddow]], forming the prelude to the [[BBC]], and he spoke of the close association of aviation and wireless telephony in that same year at a private gathering with [[Florence Tyzack Parbury]], and even spoke of interplanetary wireless communication. In 1924, the Marconi Company co-established the [[Unione Radiofonica Italiana]] (now [[RAI]]).<ref>{{Cite web|url=http://www.storiadellaradio.rai.it/dl/portali/site/articolo/ContentItem-d3384361-91fc-4b38-b8ab-9ec4031ec7aa.html|title=Storia della Radio dal 1924 al 1933|website=Storia della radio|publisher=Rai|language=it|access-date=2020-02-16}}</ref>