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 ...

Thelxie is a robot shaped like a penguin that was introduced and created by Freminet. Unfortunately, Freminet does not have time to install a language module into Thelxie, and our cute mascot can only ...

Learning Morse Code is no longer a requirement for HAMs in many jurisdictions, but it’s still a nice skill to have. [I_void(warranties)] wanted to learn, but couldn’t find a trainer that fit his style ...

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 ...

Information could potentially be stored in ice for millennia, simply by making subtle changes to the shape and position of internal bubbles, which can then be converted into binary or Morse codes.