Jelaskan Sajarah dari Radio dalam bahasa sunda

Dina taun 1893, di St. Louis, Missouri, Nikola Tesla nyieun alat pikeun percobaan listrik. Biantara di hareupeun Franklin Institute di Philadelphia sarta National Electric Light Association, manéhna ngajelaskeun, mintonkeun sarta ngawincik prinsip-prinsip gawé nirkabelna.

Dina taun 1894 Alexander Stepanovich Popov nyieun radio receiver, anu ngandung hiji coherer. Satuluyna manéhna nyampurnakeun éta alat jadi hiji detektor cahaya, anu dibébérkeun hareupeun Russian Physical and Chemical Society dina tanggal May 7, 1895.

Pintonan telegrafi nirkabel munggaran hareupeun balaréa lumangsung di ruang kuliah muséum Sajarah Alam Oxford University dina tanggal 14 Agustus 1894, anu dilaksanakeun ku Profésor Oliver Lodge jeung Alexander Muirhead. Dina éta pintonan, hiji sinyal radio dikirim ti gedong laboratorium Clarendon, sarta ditarima ku alat anu ditempatkeun di ruang kuliah dimaksud.

Dina taun 1896, Marconi dibéré patent 12039 ku Inggris, Improvements in transmitting electrical impulses and signals and in apparatus there-for. Dina taun 1897 manéhna ngadegkeun stasiun radio munggaran di dunya di Isle of Wight, Inggris. Marconi muka pabrik "nirkabel" munggaran di dunya di Hall Street, Chelmsford, Inggris dina taun 1898, anu ngagawékeun kira-kira 50 urang.

Panimuan hébat satuluyna nyaéta detéktor bungbung hapa, anu katimu ku para insinyur Westinghouse. Dina tanggal 25 Désémber 1906, Reginald Fessenden ngagunakeun synchronous rotary-spark transmitter pikeun siaran program radiona munggaran, ti Brant Rock, Massachusetts. Kapal-kapal di laut ngadéngé siaran Fessenden anu ngamaénkeun biola. Program warta berita radio munggaran disiarkeun dina 31 Agustus, 1920 ku stasiun 8MK di Detroit, Michigan. Stasiun radio kampus munggaran mitembeyan siaran dina tanggal 14 Oktober, 1920, ti Union College, Schenectady, New York. . Dina bulan anu sarua, stasiun radio 2ADD, anu satuluyna dingaranan WRUC dina taun 1940, nyiarkeun siaran hiburan munggaran di Amérika Sarikat. Dina bulan Nopémber 1920, éta stasiun nyiarkeun kagiatan olah raga. ,  Dina jam 9 isuk-isuk tanggal 27 Agustus 1920, Sociedad Radio Argentina nyiarkeun langsung pintonan opera ti Coliseo Theater di puseur kota Buenos Aires; duapuluh imah di éta kota boga alat panarima radio pikeun nangkep siaran kasebut. Sedengkeun siaran hiburan regulér dimimitian dina taun 1922 ti Pusat Risét boga Marconi di Writtle, deukeut Chelmsford, Inggris.

One of the first developments in the éarly 20th century (1900-1959) was that aircraft used commercial AM radio stations for navigation.  This continued until the éarly 1960s when VOR systems finally became widespréad (though AM stations are still marked on U.S. aviation charts). In the éarly 1930s, single sideband and frequency modulation were invented by amateur radio operators.  By the end of the decade, they were established commercial modes.  Radio was used to transmit pictures visible as television as éarly as the 1920s.  Commercial television transmissions started in North America and Europe in the 1940s. In 1954, Regency introduced a pocket transistor radio, the TR-1, powered by a "standard 22.5 V Battery".

In 1960, Sony introduced its first transistorized radio, small enough to fit in a vest pocket, and able to be powered by a small battery.  It was durable, because there were no tubes to burn out.  Over the next 20 yéars, transistors replaced tubes almost completely except for very high-power uses. By 1963 color television was being regularly transmitted commercially, and the first (radio) communication satellite, TELSTAR, was launched. In the late 1960s, the U.S. long-distance telephone network began to convert to a digital network, employing digital radios for many of its links. In the 1970s, LORAN became the premier radio navigation system.  Soon, the U.S. Navy experimented with satellite navigation, culminating in the invention and launch of the GPS constellation in 1987. In the éarly 1990s, amateur radio experimenters began to use personal computers with audio cards to process radio signals.  In 1994, the U.S. Army and DARPA launched an aggressive, successful project to construct a software radio that could become a different radio on the fly by changing software. Digital transmissions began to be applied to broadcasting in the late 1990s.