amateur radio's contributions

Feb 7, 2025 ... Who really invented radio? ... On 14 May 1897, the Italian Guglielmo Marconi carried out the first radio transmission in history. Based on Hertz's ... Armstrong was a pioneer of radio engineering, credited as the inventor of FM radio. ... Introduced in Japan in 1979 and in the US the following year, the ... While newspapers have been around for hundreds of years following Gutenberg's printing press invention, radio was the first mass media form of communication ... That is more or less why he never did get credit for inventing radio despite the fact he did patent it in the US the same year that Marconi got his first ... The police officer will receive this either on a PC based police radio or a mobile data computer located in their car. ... The next year the Federal ... Nov 1, 2012 ... Furthermore, contrary to what you might have read, the U.S. Supreme Court never said that he was -- not in 1943, not in any other year. If fact, ... Nov 11, 2022 ... Edison, his team, and competitors worked over the years to develop a better microphone for those wax cylinders. (At the time wax cylinder ... Facts and Folklore about Nathan Stubblefield by Bob Lochte. Around Murray, Kentucky, folks say he created radio. For nearly 70 years, they claimed that Nathan ... In July 1986 Marconi made the first demonstration of his invention, the radio transmitter and receiver, for the British government. In December 1901, Marconi ... During these years, transmitters were quite large with many tubes and heavy batteries. Bramco, Inc. introduced its Control Box Transmitter that was advertised ...