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1888: Heinrich Hertz detects and produces radio waves.
Heinrich Hertz detects and produces radio waves. -
1894: Marchese Guglielmo Marconi builds his first radio equipment, a device that will ring a bell from 30 ft. away.
Marchese Guglielmo Marconi builds his first radio equipment, a device that will ring a bell from 30 ft. away. -
1899: Marconi establishes first radio link between England and France.
Marconi establishes first radio link between England and France. -
1900: American scientist R.A. Fessenden transmists human speech via radiowaves.
1900: American scientist R.A. Fessenden transmists human speech via radiowaves. -
1901: Marconi transmits telegraphic radio messages from Cornwall to Newfoundland
1901: Marconi transmits telegraphic radio messages from Cornwall to Newfoundland -
1920: KDKA broadcasts the first regular licensed radio broadcast out of Pittsburgh, PA.
1920: KDKA broadcasts the first regular licensed radio broadcast out of Pittsburgh, PA. -
1925: WJR-AM offers educational broadcasting spots to the UM. The UM continued to broadcast on WWJ as well.
1925: WJR-AM offers educational broadcasting spots to the UM. The UM continued to broadcast on WWJ as well. -
1931: The UM School of Music pursues the idea of radio as education. It taught school band lessons via radio.
1931: The UM School of Music pursues the idea of radio as education. It taught school band lessons via radio. -
1933: Educational programming originating at the UM grows.The Regents of the UM become interested in radio.WJR cuts the UM's educational broadcasts for commercial broadcasting.Edward Armstrong patents wide-band frequency modulation (FM radio).
1933: Educational programming originating at the UM grows.
The Regents of the UM become interested in radio.
WJR cuts the UM's educational broadcasts for commercial broadcasting.
Edward Armstrong patents wide-band frequency modulation (FM radio). -
1935: FM radio is born, but only in mono.
1935: FM radio is born, but only in mono.