Hackers, makers and engineers have been working with Morse code throughout history. For many years, simple code keys and practice oscillators were the “hello world” of hobby electronics.
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 ... to store the code practice sessions.
Morse code is a communication system developed by Samuel Morse, an American inventor, in the late 1830s. The code uses a combination of short and long pulses – dots and dashes, respectively ...
To understand interception as it was then, I was taught to think of two distinctive features of communications in the immediate post-war period: high frequency (HF) radio, and the morse code used on ...