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 ...
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 ...
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