how radio frequencies are allocated and managed globally

In 1935 the British produced a number of radio-controlled aircraft to be used as targets for training purposes. ... when it results in civilian deaths ... Not surprisingly, sales soared, as did radio listenership. In 1933, the VE301 accounted for about half of the total radio sales in Germany. The following year, ... Oct 5, 2018 ... By the time I was born, radio had been around for over 20 years, but we didn't have television yet. In the evenings we had a leisurely dinner, ... In the mid-1890s, building on techniques physicists were using to study electromagnetic waves, Guglielmo Marconi developed the first apparatus for long-distance ... Jan 21, 2016 ... In 1906, Canadian inventor Reginald Fessenden sent the faint sound of his voice and violin by radio. The next year, Lee de Forest invented ... 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. Feb 8, 2018 ... Marconi deliberately muddied the waters when presenting “his” invention at a lecture at the Royal Institution on 13 June 1902. As Probir K ... While newspapers have been around for hundreds of years following Gutenberg's printing press invention, radio was the first mass media form of communication ... It was invented in 1947, and even several years later, it was considered by ... radio equipment. Yet the transistor is fundamental for all modern ... Jan 8, 2024 ... Radio Flyer was created in Chicago by Italian immigrant Antonio Pasin ... RELATED: Chicago's own Radio Flyer on a roll for 100 years. The ...