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.

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 ...

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 ...

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 ...