Morse code, the language of the telegraph, is a system of communication that's composed of combinations of short and long tones that represent the letters of the alphabet.

More than 150 listeners across the U.S., Italy, France and Japan huddled by their radio to decipher a series of Morse Code transmitted by the Maritime Radio Historical Society.

Through the crackle and fuzz of long-distance radio, Karl Thompson easily translated the steady dit-dah, dit-dah, dit-dah of Morse Code from across the Atlantic. Thompson, operating amateur ...

After radio and other technologies were invented, the telegraph became less useful, but Morse code is still known and used today.

The technology is old and Morse Code complicated, but Ham radio operators remain relevant even today.

Aviators also use Morse code to identify automated navigational aids. These are radio beacons that help pilots follow routes, traveling from one transmitter to the next on aeronautical charts.

Blinking Morse Because its signals are so simple – on or off, long or short – Morse code can also be used by flashing lights. Many navies around the world use blinker lights to communicate from ship ...