On this day in 1923, the first transatlantic radio broadcast of a voice occurred between Pittsburgh and Manchester, England.

On this day in 1940, ASCAP prevented the radio industry from playing any ASCAP-licensed music. The ban lasted for ten months. It was in reaction to a dispute between the radio networks and ASCAP, the American Society of Composers and Publishers.

On this day in 1951, The "Wild Bill Hickok" TV series was replicated on radio following its success on television.

On this day in 1963, the "Dear Abby Show" premiered on the CBS Radio network. It ran eleven years. On this day in 1966, "Pirate Radio 390" (Radio Invicata)an off-shore station near England, resumed broadcasting.

On this day in 1977, WFAT, a Brooklyn, New York pirate station, began broadcasting on 1620 AM.

On this day in 1982, the "CBS Mystery Theater" aired its final episode after 8 years on radio.