History of Radio

Heinrich Hertz

May 28, 1888

First to detect and produce radio waves.

First Radio

Jan 1, 1893

Invented by Nikola Tesla. Started with the discovery of radio waves.

First radio signal

Jan 1, 1895

Marconi, and italian invetnor, sent and recived radio signal

Radio Transmission

Jun 19, 1904

First radio transmission of music

Audion Tube

Jan 1, 1906

Lee De Forest created a vacuum tube that amplified signals

Radio Recievers

Feb 21, 1913

The cascade-tuning radio receiver and the heterodyne receiver are introduced.

First radio stations

Feb 5, 1920

8XK, renamed KDKA. Still broadcasting today

FRC

Jan 1, 1927

orgainzed the licensing of transmitters. Assigning radio station frequencies, call letters, and power limits.

Broadcasting TV

Mar 15, 1928

A station in NYC, WRNY begins to broadcast televsion shows.

Golden Era

Jan 1, 1930

Middle of great depression

First FM station

Jan 1, 1939

Created by Edward Armstrong. FM stations traditionally play music.

Radio's Demise

Jan 1, 1950

TV makes an appearence in late 30's. As popularity grew, advertisers went to TV

Cassete Tape

Sep 24, 1962

Philps created the first compact casset for audio storage.

Music Radio

Jan 1, 1970

Radio competes with other sources of enbterainment. Additon of music keeps the radio in running.

Boom-box

Mar 8, 1980

By 1980, the radio was made into a big boom box that would play music loud. Portable radio