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Question
#28289. AM/FM
asks:
Who invented the radio?
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Siskin
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On Dec. 12, 1901, Marconi and his staff sent the first wireless transatlantic communication in history. They transmitted the Morse code letter s from Poldhu, Cornwall, England, to St. John's, Canada. Soon afterward, ships used Marconi's equipment to communicate with each other and with the shore over distances up to 2,000 miles (3,200 kilometers).
Marconi's fame grew when his wireless equipment helped bring rescue ships for the sinking ocean liners Republic in 1909 and Titanic in 1912, saving many lives. These accidents led to laws requiring that all large passenger ships have wireless equipment.
 http://worldbook.bigchalk.com/343860.htm
Feb 17 03, 9:54 PM
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KD5KJA
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Some say Marconi, but Nikola Tesla did have a patent first.
"With his newly created Tesla coils, the inventor soon discovered that he could transmit and receive powerful radio signals when they were tuned to resonate at the same frequency. When a coil is tuned to a signal of a particular frequency, it literally magnifies the incoming electrical energy through resonant action. By early 1895, Tesla was ready to transmit a signal 50 miles to West Point, New York... But in that same year, disaster struck. A building fire consumed Tesla's lab, destroying his work.
It wasn't until 1943, a few months after Tesla's death, that the U.S. Supreme Court upheld Tesla's radio patent number 645,576."
http://www.pbs.org/tesla/ll/ll_whoradio.html
Tesla invented many things that people use every day, and never think about it.
[Added reference link - McG]
Mar 11 08, 10:47 PM
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