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 ...

Morse code, often referred to as continuous wave (CW) in radio circles, has been gradually falling out of use for a long time now. At least in the United States, ham radio licensees don’t have to ...

Morse code is a method of encoding words that was invented in the 19th Century as a way of transmitting messages over long distances. This was before the era of telephones and way before smartphones!