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.
Jamboree by Jim Wilson Despite two typhoons in the past few weeks, the World Scout Jamboree is up and running in Kirara-hama, Yamaguchi, Japan. More than 30,000 Scouts and leaders from 161 countries around the world are engaging in two week... Read more