walkie-talkie development

I built a crystal radio in 1952 when I was 12 years old. It came as a kit from Allied Radio in Chicago for $2.50. I spent many an hour down in our basement ... While newspapers have been around for hundreds of years following Gutenberg's printing press invention, radio was the first mass media form of communication ... 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. 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 ... Mar 16, 2021 ... Alexander Stepanovich Popov, a Russian physicist, was born Mar. 16, 1859. Nearly everyone knows that Guglielmo Marconi was the inventor of radio. In 1893 the inventor Nikolai Tesla demonstrated a wireless radio in St. Louis, Missouri. Despite this demonstration, it was Guglielmo Marconi who is often ... We invented and patented wireless local area network (WLAN) in the 1990s – a ... Reverberation occurs where radio waves bounce around the surrounding environment ... 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 ... Nikola Tesla—was a Serbian-. American inventor who discovered the basis for most alternating-current machinery. In 1884, a year after coming to the United ... Radio has played a role in world politics and strategy since its invention ... In the same year Navy radio proved its usefulness in a national emergency ...