[Konstantinos] wrote in to tell us about his CDW project: a digital encoding scheme for ham radio that uses CW (continuous wave) Morse code for digital data transfer. [Link updated 1/5/16] CW ...

In case you’re not a former sailor or ham radio operator, the above is not a typesetting snafu. Those are the dashes and dots (or “dits” and “dahs,” as telegraph operators often vocalize them) that ...

The first message sent by Morse code’s dots and dashes across a long distance traveled from Washington, D.C., to Baltimore on Friday, May 24, 1844 – 175 years ago. It signaled the first time in human ...