It probably can’t have taken long after the first spectrum waterfall display was created, before somebody had a go at creating a waveform that would create an image in the waterfall. We don’t know who ...

It’s no secret that artists are known for incorporating hidden messages in their work, from The Beatles’ track ‘Lucy in the Sky with Diamonds’ spelling LSD to the backmasking of Missy Elliot’s "flip ...

Here’s an interesting use for an old organ. Let it get in on your Ham radio action. [Forrest Cook] is showing off his project which uses a Hammond Organ to encode messages which can be displayed by a ...