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 ...

A guide to codes and signals : international flag code, secret ciphers, weather signals, morse code, sign language, etc., with flags of all nations / by Gordon A.J. Petersen and Marshall McClintock ...

When Samuel Morse sent the Bible passage "What hath God wrought" from the basement of the Capitol in Washington D.C. to Alfred Vail in Baltimore in May of 1844, he might not have suspected that Vail's ...

“Calling all. This is our last cry before our eternal silence.” With that, in January 1997, the French coast guard transmitted its final message in Morse code. Ships in distress had radioed out dits ...

On July 12, 1999, the nation’s final message in Morse code was sent out to sea from a remote Bay Area radio station. The end of an era, the room’s mood was mournful. Grizzled old men wept. “We wish ...