digital audio broadcasting (DAB)

May 12, 2022 ... ... invention." The wireless became the only way for survivors on board the RMS Carpathia to contact their families. Since messages were charged ... AM (amplitude modulation) Radio, in a form that we would recognize today, began in 1906, when Reginald A. Fessenden transmitted the first broadcast containing ... 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 ... The station's creator and owner, an entrepreneur, inventor, and manufacturer named Powel Crosley Jr. ... He agreed to buy his nine-year-old a radio, but when he ... Philco did not observe "model years" until June 1934, which marked the introduction of their 1935 model lineup. Normally, Philco introduced a new radio line ... Jun 28, 2023 ... The background ripples detected by NANOGrav could help scientists better understand how gravitational waves are created and what happens to them ... 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 ... 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, ... 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 ... Jun 3, 2017 ... Commercial broadcasting didn't start until 1920, but the University of Wisconsin was experimenting with wireless transmission and in December ...