AM Broadcast: Full Details

Also refered to as Medium Wave, AM broadcasting began with the first experiment in 1906 by Reginald Fessenden. Originally used for small-scale voice and music broadcasts until World War I. The first licensed commercial radio services in the 1920s. XWA of Montreal, Quebec (later CFCF) was the first commercial broadcaster in the world. The first licensed American radio station was started by Frank Conrad, KDKA in Pittsburgh, Pennsylvania. During the "Golden Age of Radio" (1920s-1950s); dramas, comedy, news and music stations were licensed.