Digital Signals

For those looking at the waterfall images: Y-axis is time, X-axis is the frequency axis, colors are intensity. Jus a spectrogram that's been rotated 90 degrees to the left.

When you play the sound, the start is at the bottom of the image, and then moves upwards (kind of like Guitar Hero). Some of them can be quite musical, like the THOR (https://www.sigidwiki.com/wiki/THOR)

Listening to those samples, I initially thought this was a new album from Autechre.

Related, there’s an awesome tool [1] created for the SDR crowd for decoding captures of 433mhz signals, which really deserves an award for open source design and is a genuine public service. I’ve used this to identify and reverse engineer generic thermometers, which saved me a heap of dough paying for name-brand gear.

[1] https://triq.org/

Love it. Now I just need to find some cereals that put whistles in their boxes.

Play all of them together! (:

My favorite track has to be Russian enigma.

Meta: I think "RF" or "wireless" in the title would be warranted, this seems to be very much focused on radio communications. Obviously there's a lot of digital signalling going on in wires as well, so the distinction has merit in my opinion.

Also, it's a really impressively long list! Cool.

Edit: clarified first sentence.