What was the day that radios were used in the roaring 20's?

Answer 1

There was no one single day: in fact, there is even a debate about which year commercial radio broadcasting began, and who did it first. Many historians believe it was 8MK in Detroit (today WWJ) in August 1920; the more famous KDKA in Pittsburgh went on the air in late October 1920, and other small stations like 1XE (later WGI) in greater Boston were also on the air in 1920; in Canada, there is some evidence of at least one station on the air in late 1919. But that said, by 1922, the radio craze had exploded across the USA, and hundreds of stations went on the air. In the early years, most stations were only on the air a couple of nights a week, but demand for more programming caused stations to expand their hours; it also caused the government to allocate more frequencies for radio-- at first there was just one (833 AM... there was no FM yet), but that quickly changed as more stations wanted to be on the air. Radio became extremely popular during the Roaring 20s, and by the end of the decade, millions of people owned a radio set. By decade's end, there were also two national networks-- NBC (National Broadcasting Company, which debuted in 1926) and CBS (Columbia Broadcasting System, which debuted in 1927).