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Cervera Visits Marconi's Installations
Julio Cervera Baviera visited Marconi's radiotelegraphic installations on the English Channel and worked to develop his own system. -
Signals Exchanged
Radio telegraphy signals were exchanged regularly with the island of Heligoland over a distance of 62 km. -
First Signals Transmited
On December 12, 1901, inventor Guglielmo Marconi became the first person in history to transmit signals across the Atlantic Ocean -
Telefunken
The company Telefunken was founded as joint undertakings for radio engineering in Berlin -
First Radio Audio Broadcast
On Christmas Eve, Reginald Fessenden used an Alexanderson alternator and rotary spark-gap transmitter to make the first radio audio broadcast from Brant Rock, Massachusetts. -
First Song On Radio
The first song played over radio was "O' Holy Night" played on a violin by Reginald Fessenden. -
Nobel Prize
Marconi and Karl Ferdinand Braun were awarded the Nobel Prize in Physics for "Contributions to the development of wireless telegraphy." -
Broadcasting Station Constructed
In April 1909, Charles David Herrold, an electronics instructor in San Jose, California constructed a broadcasting station. It used spark-gap technology, but modulated the carrier frequency with the human voice, and later music. -
RMS Titanic
In 1912, the RMS Titanic sank in the northern Atlantic Ocean. After this, wireless telegraphy using spark-gap transmitters quickly became universal on large ships. -
AMRAD Broadcast
In 1916, Harold Power and his radio company AMRAD broadcasted the first continuous broadcast in the world from Tufts University under the call sign 1XE. It lasted 3 hours. -
Station 9XM
Station 9XM at the University of Wisconsin in Madison broadcast human speech to the public at large. -
First Commercial Station
8MK began broadcasting daily and was credited by famed inventor Lee De Forest as the first commercial station. -
Argentina Begins Broadcasting
In 1920, regular wireless broadcasts for entertainment began in Argentina, pioneered by the group around Enrique Telemaco Susini, and spark gap telegraphy stopped. -
Sociedad Radio Argentina
At 9 pm on August 27, 1920, Sociedad Radio Argentina aired a live performance of Richard Wagner's opera Parsifal from the Coliseo Theater in downtown Buenos Aires. Only about twenty homes in the city had receivers to tune in this radio program. -
First College Radio Station
The first college radio station began broadcasting on October 14, 1920 from Union College, Schenectady, New York under the personal call letters of Wendell King, an African-American student at the school.
