The history of the radio, or wireless telegraph, dates back more than a century. Advancements over time, including voice transmissions, have led to the radios that exist today. Early radio communications were limited to simple Morse Code trans - PowerPoint PPT Presentation

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The history of the radio, or wireless telegraph, dates back more than a century. Advancements over time, including voice transmissions, have led to the radios that exist today. Early radio communications were limited to simple Morse Code trans

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Title: The history of the radio, or wireless telegraph, dates back more than a century. Advancements over time, including voice transmissions, have led to the radios that exist today. Early radio communications were limited to simple Morse Code trans


1
Radio
Communication
History
2
The history of the radio, or wireless
telegraph, dates back more than a
century. Advancements over time, including voice
transmissions, have led to the radios that exist
today. Early radio communications were limited to
simple Morse Code transmissions. Like television,
radio broadcasts must follow specific Federal
Communications Commission (FCC) regulations. In
order to broadcast legally on the radio, a
person must obtain a license from the FCC.
3
(No Transcript)
4
The invention of the radio, also known at the
time as a "wireless telegraph," has its roots in
both the telephone and telegraph machine. A
German physicist by the name of Heinrich Hertz
first discovered the existence of radio waves in
1887. On December 12th, 1901, Italian inventor
Guglielmo Marconi and his assistants were able to
transmit across the Atlantic without the use of
wires, which at the time was considered
impossible. This breakthrough in technology
gave way to radio communication.
Early History
5
The transmission across the Atlantic
achieved by Guglielmo and his assistants was in
the form of Morse Code, tapping out the letter
"S," however the first voice transmission
occurred on December 24th, 1906. Canadian
engineer Reginald Fessenden, who had worked with
Thomas Edison prior, became convinced that the
"wireless telegraph" could not only transmit
Morse Code, but the human voice as well. The
transmission included Fessenden reading from the
Bible, playing the violin, and a phonograph
recording of "Largo."
Voice Transmission
6
In 1910, the United States government made it
mandatory for all ships to contain a wireless
telegraph, as well as a wireless telegraph
operator, on board in case of emergency. The
sinking of the Titanic led to the Radio Act of
1912, which required all ships to have two
wireless telegraph operators on board at all
times. The Radio Act of 1927 was enacted to
control the "chaos" being created by amateur
radio broadcasters. As a result, The Federal
Radio Commission (FRC) was formed and given the
responsibility of either granting, or denying,
a person a license to broadcast on the radio. In
1934, the FRC gave way to the FCC.
Early Radio Communication Laws
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