The device contained a buzzer and a battery along with terminals for a key ... when knowing Morse code was a hot job skill and not just a hobby. Then again, if telegraph faxing had caught ...

To revive her dad’s old straight key, a sturdy mid-20th century ... we featured this vintage telegraph sounder revived with a Morse code sender not too long ago.

Morse code is a communication ... three dots. The code was initially transmitted as electrical pulses sent along a telegraph wire, and later via radio waves, but it’s versatile in how it can ...