"Morse code" is used to express letters and numbers by combining codes of different lengths, such as "Ton Ton Ton, Toe". Although it is a Morse code that uses only two codes, it is hard to memorize ...

What’s the worst thing about traditional Morse keyers? If you ask us, it’s the fact that you have to learn how to do two distinct things with one hand, and switch between them quite quickly and often.

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 ...