The Titanic famously (or infamously) used Morse code to call out in distress ... moderately hard to receive it. Making a transmitter to send the code is also easy, or feel free to whistle, thump ...

While voice is used to excite the transmitter, it doesn’t actually transmit voice. El Silbo is a CW affair, so you should bone up on your Morse Code a bit before building one. Like many QRP ...

Morse code, on the other hand ... to snag a ham license from the FCC before connecting your gadget to a radio transmitter.) Pro Tip: Dashes should be three times the length of dots.

At that time, the telegraph wire was the quickest way to get messages from here to there, using Morse code. He designed a transmitter to send and a receiver to detect radio waves. By the end of ...

The other remarkable aspect of Morse code is its technological simplicity. Anyone with basic technological skills can build their own transmitter using standard components. The signal generated by ...