The story of FM radio is one of success and tragedy.
In the mid-30s, Major Edwin Armstrong, an inventor who had already devised a successful circuit to improve AM radio, came up with a whole new approach to transmitting radio signals.
Armstrong was clearly a technical genius. Although his life was cut short, he's still considered the most prolific inventor in radio's history.
Even though he had improved AM radio in significant ways, Armstrong was well aware of AM radio's major limitations: