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. The tones are sometimes ...

If you are a ham radio operator of a certain age, you probably remember ads for “The Instructograph,” a mechanical device for learning Morse code. [Our Own Devices] has an ancient specimen of the ...

The first public demonstration of the electric telegraph, which uses Morse code, was done on Jan. 11, 1838, by inventors Samuel Breese Morse and Alfred Vail. Learn Your Name in Morse Code Day takes ...