History Of Amateur Radio
Description: 1831: Michael Faraday Demonstrates Induction Principle-Electricity and Magnetism Are Related. 1850: James Clerk Maxwell Advances Theory that Light is an Electromagnetic Wave. 1864: Mahlon Loomis transmits wireless telegraphy 18 miles between two mountains using kites as antennas.
1870: Loomis accomplishes successful ship to ship wireless communications over two miles on the Chesapeake Bay under U.S. Navy sponsorship. 1884: Edison Patents “The Edison Effect”, his only discovery 1 in pure science – Electrons flow from a heated filament to a cold plate through a vacuum.
Edison patented the idea but wrongly dismissed it as just a scientific curiosity with no practical use. 1886: Heinrich Hertz Proves Maxwell’s Theory Through Experimentation. 1899: Marconi sends a wireless message across the English Channel.
1901: Marconi sends a message across the Atlantic. 1900: Reginald A. Fessenden succesfully transmits voice over a distance of 1 mile.
December 24, 1906: Prof. Fessenden demonstrates audio-modulated CW, presenting the world’s first radio broadcast, including voice and music, from Brant Rock, MA. 1904: John Ambrose Fleming Introduces the “Thermionic Valve” – the first vacuum tube.
1906: Lee De Forest Introduces the Audion. 1918: Major Edwin Armstrong Discovers the Superheterodyne Principle – the basis for virtually all modern radios and televisions. 1921: Amateur Radio Station 1BCG The Radio Club of America Club Station.
“Jim W6LG talks to G4AKC, David Starkie in England. David is Pedestrian Mobile running about 100 watts to a quarter wavelength long vertical mobile antenna. David is walking near the ocean and is being heard across the United States a... Read more
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fhistory-of-amateur-radio-book%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151