understanding the principles of operation and the various applications of two-way radio communication systems in different industries

Jan 4, 2024 ... Many reliable sources suggest that inventor and radio-pioneer Reginald Fessenden played a violin solo of the popular Christmas Carol 'O Holy Night' as the ... Car companies introduced FM car radios in 1963. In 1964, the FCC ordered that FM stations stop simulcasting and create original programming for FM broadcasting. Aug 7, 2023 ... KDAY became the country's first radio station to play hip-hop on a full-time basis. In addition to programming the more established East Coast ... Edwin Armstrong invented Frequency Modulation radio (FM radio) in 1933, but his employer, RCA, ignored and even boycotted the invention. FM radio vastly ... Tesla actually invented the idea of radio in 1892 — not too long after Heinrich Hertz demonstrated UHF spark wireless transmissions in Germany in 1885. In 1898, ... The four chief players in American radio's early years, Marconi, Canadian-born Aubrey Fessenden, Lee deForest, and John Stone Stone [sic] were all inventor/ ... It's easy to find the stories about how Guglielmo Marconi invented radio and ... 1991 saw one of the biggest changes in amateur radio when the FCC ... Aug 12, 2021 ... In late November of 1925, in a new show called “Barn Dance” on Nashville's WSM radio station, announcer George D. "Judge" Hay introduced the ... A 26-year old engineer named Grote Reber built the first dish antenna radio telescope in 1937. He used wooden rafters, galvanized sheet metal, and spare parts. 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 ...