On 24 December 1906, Reginald Aubrey Fessenden transmits from Brant Rock, Massachusetts, the first entertainment and music radio broadcast aimed at the general public, using the high-frequency alternator designed by Ernst Alexanderson that he himself had commissioned in 1904. The broadcast, using amplitude-modulated (AM) continuous waves, is a radical departure from the dots-and-dashes (Morse code) transmission prevalent until then, and marks the birth of modern radio broadcasting.