The radio beacon may be Henry Ford's most important contribution to aviation. Early pilots depended on landmarks, preventing reliable navigation in bad weather. Ford's engineers developed a radio beacon that simultaneously transmitted the Morse code letter "A" (dot-dash) in one direction and the letter "N" (dash-dot) in another. The pilot steered until the separate signals merged into a steady hum.

The radio beacon may be Henry Ford's most important contribution to aviation. Early pilots depended on landmarks, preventing reliable navigation in bad weather. Ford's engineers developed a radio beacon that simultaneously transmitted the Morse code letter "A" (dot-dash) in one direction and the letter "N" (dash-dot) in another. The pilot steered until the separate signals merged into a steady hum.

In 1926, Ford Motor Company commenced regular freighting between Dearborn, Chicago and Lansing airports using their Tri-Motor aircraft. Eugene S. Donovan, a Ford radio engineer, invented this radio beacon. When an aircraft was safely over its landing destination, it communicated a signal to the pilot. Useful in inclement weather, these safety devices were adopted in airports across the nation.

Early pilots depended on visible landmarks, preventing reliable navigation in bad weather. Henry Ford's engineers developed a radio beacon that simultaneously transmitted two Morse code letters. Pilots steered until the separate signals merged into one steady hum. The original beacon station building at Ford Airport was removed in 1933 and is now displayed in Henry Ford Museum of American Innovation.

The radio beacon may be Henry Ford's most important contribution to aviation. Early pilots depended on landmarks, preventing reliable navigation in bad weather. Ford's engineers developed a radio beacon that simultaneously transmitted the Morse code letter "A" (dot-dash) in one direction and the letter "N" (dash-dot) in another. The pilot steered until the separate signals merged into a steady hum.

Early pilots depended on landmarks, preventing reliable navigation in bad weather. Ford engineers developed a radio beacon that used Morse signals to guide pilots; when an aircraft was over its destination, the beacon could also send a signal to the pilot. This radio station license allowed the operation of the radio beacon at Ford Airport.

Early pilots depended on landmarks, preventing reliable navigation in bad weather. Henry Ford's engineers developed a radio beacon that simultaneously transmitted two Morse code letters, allowing pilots to steer until the separate signals merged into a steady hum. The original beacon station at Ford Airport (shown here) was removed in 1933 and is now on display inside the museum.

Early pilots depended on landmarks, preventing reliable navigation in bad weather. Henry Ford's engineers developed a radio beacon that simultaneously transmitted two Morse code letters, allowing pilots to steer until the separate signals merged into a steady hum. The original beacon station at Ford Airport (shown here) was removed in 1933 and is now on display inside the museum.