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The telegraph
Guglielmo Marconi built the first successful wireless telegraph, however the signals could only travel about half a mile -
Roberto Landell de Moura transmits a voice
Roberto Landell de Moura was able to successfully transmit a human voice half a mile away causing him to move to america and patent his device. after that engineers built a vacuum tube device that had the first radio broadcast ever. -
The first radio station is built
Marconi built a radio station at new streets works in chemsford england which soon lead to the first college radio station made on October 14 1920 -
The radio advances
The airplane am radio was invented for navigation and soon radios could make pictures in the 1920s. This also lead to people inventing modes that allowed the TV to have commercials. soon in the 1940s america and europe had tv stations. -
at&t makes the telephone
In 1947 at&t made the phone whoever it was very expensive to use and was uncommon because only 3 people at a time in a city could make phone calls -
The worlds first commercially produced radio transiter
in 1954 the Regency company introduced the worlds first pocket radio. in 1955 sony introduced its first transistorized radio. it was compact and durable it also replaced vacuum tubes which made it last longer -
color tv and more advancements.
In 1963 color tv was being produced and and the first radio broadcast satellite "tellstar" was launched in the late 1960s. in the late 1960s the long-distance telephone network began to convert to a digital network, employing digital radios. soon in 1987 the navy launched the first gps satellite. -
us royalty controversy
In october 1998 the us gov passed the dmca which made radio station pay an expensive royalty to continue running. it was so expensive many stations thought they would have to shutdown. however on june 26 2007 many radio stations completely shut down to protest the royalty. so some small stations were allowed to pay smaller royalties. whoever in January 2016 that rule was changed -
Internet radio
In 2003 music on the internet gained 49 million dollars in revenue by 2006 that rose to 500 million dollars. 19% of U.S. consumers 12 and older listen to Web-based radio stations.
