A BRIEF HISTORY OF EARLY RADIO TECHNOLOGY AND APPLICATION
Sheena Mariah P. Catacutan
ABMA 136
RESEARCH NO.2
1800’s-1950 A BRIEF HISTORY OF EARLY RADIO TECHNOLOGY AND APPLICATION
• WIRELESS RADIO - Developed during the 1800’s – allowed users to send Morse code.
• GUGLIELMO MARCONI (ITALIAN – 1874-1937) - Developed technology to send the first longdistance wireless radiotelegraphs. 1897 – started the Marconi Wireless Telegraph Company. 1899 – transmitted a message across the English Channel. 1901 – transmitted a message across the Atlantic
Ocean.
• REGINALD FESSENDEN (CANADIAN – 1886-1932) - Developed amplitude- modulated (AM) radio.
1906 – Performed the first broadcast of the human voice and music This is important because the signal was received by several different receivers, therefore it was truly a “broadcast,” whereas pervious transmissions were sent to a single receiver.
• LEE DE FOREST (AMERICAN – 1873-1961) - 1906 – Patented the Audion Tube. 1920-1930 –
Developed a means to record sound onto film, making the first movies with synch sound.
• DAVID SARNOFF (BELARUSIAN – 1891-1971) - 1906 – worked for the Marconi Wireless Telegraph
Company. 1912 – Rose to fame after he claimed to be the only telegraph operator working to relay news about the survivors of the Titanic. 1919-1970 – Led (RADIO CORPORATION AMERICA) RCA.
• RADIO ACT OF 1912 - The United States government began requiring radio operators to obtain licenses to send out signals and mandated that seagoing vessels continuously monitor distress frequencies, this was prompted by the sinking of the Titanic. Because a nearby ship heard its distress signals, hundreds of people were saved.
• RADIO CORPORATION OF AMERICA (RCA) - 1919 - Formed to manage the patents for the technology of the radio receiver and transmitter.
• KDKA IN PITTSBURG, PA - October 1920 - received its license and went on the air as the first US licensed commercial broadcasting station. November 1920 - broadcast the election returns of the HardingCox presidential
ABMA 136
RESEARCH NO.2
1800’s-1950 A BRIEF HISTORY OF EARLY RADIO TECHNOLOGY AND APPLICATION
• WIRELESS RADIO - Developed during the 1800’s – allowed users to send Morse code.
• GUGLIELMO MARCONI (ITALIAN – 1874-1937) - Developed technology to send the first longdistance wireless radiotelegraphs. 1897 – started the Marconi Wireless Telegraph Company. 1899 – transmitted a message across the English Channel. 1901 – transmitted a message across the Atlantic
Ocean.
• REGINALD FESSENDEN (CANADIAN – 1886-1932) - Developed amplitude- modulated (AM) radio.
1906 – Performed the first broadcast of the human voice and music This is important because the signal was received by several different receivers, therefore it was truly a “broadcast,” whereas pervious transmissions were sent to a single receiver.
• LEE DE FOREST (AMERICAN – 1873-1961) - 1906 – Patented the Audion Tube. 1920-1930 –
Developed a means to record sound onto film, making the first movies with synch sound.
• DAVID SARNOFF (BELARUSIAN – 1891-1971) - 1906 – worked for the Marconi Wireless Telegraph
Company. 1912 – Rose to fame after he claimed to be the only telegraph operator working to relay news about the survivors of the Titanic. 1919-1970 – Led (RADIO CORPORATION AMERICA) RCA.
• RADIO ACT OF 1912 - The United States government began requiring radio operators to obtain licenses to send out signals and mandated that seagoing vessels continuously monitor distress frequencies, this was prompted by the sinking of the Titanic. Because a nearby ship heard its distress signals, hundreds of people were saved.
• RADIO CORPORATION OF AMERICA (RCA) - 1919 - Formed to manage the patents for the technology of the radio receiver and transmitter.
• KDKA IN PITTSBURG, PA - October 1920 - received its license and went on the air as the first US licensed commercial broadcasting station. November 1920 - broadcast the election returns of the HardingCox presidential