Marion Armstrong Presents the First Portable Superheterodyne Radio Receiver to Henry Ford Museum, September 22, 1967

This photograph shows the first portable superheterodyne radio receiver, designed by Edwin Armstrong. Superheterodying was a major communications discovery made by Armstrong. High and low frequencies were mixed to produce powerful, selective radio waves. Following his untimely death, Edwin's wife Marion Armstrong continued to preserve his legacy; she donated this radio to The Henry Ford museum in 1967.