radio history

1888-today

Jan 1, 1888

in 1888 Heinrich Hertz detects and produces radio waves

1894

Jan 1, 1894

marchese guglielmo mareon builds his first radio equipment

1899

Jan 1, 1899

marconi establishes first radio link between england and france

1900

Jan 1, 1900

american scientist R.A.fressenden transmits humen speech via radio waves

1901

Jan 1, 1901

marcioni transmits telegragraphc radio messages from cornmell to new forundland

1904

Jan 1, 1904

first radio transmission of music at Graz,Austria

1905

Jan 1, 1905

marconi invents the direction radio

1906

Jan 1, 1906

first radio program of voice and music broudcast in the U.S..

1907

Jan 1, 1907

fessenden invents a hgih-frequency electric generater produces radio waves with a frequency