As someone studying for the PPL and who had to play around with squelch quite a bit(and has stepped on others transmitting and vice versa), this was excellent. I can understand what's going on behind the scenes now.
Wow this is actually really cool. The interactivity makes it quite easy to understand the theory behind it all. (And yes, the default BMS garble when two stations talk over each other is painful!)
Came for the planes and stayed for the incredible intro to DSP writeup. Well done!
Absolutely smashing article! This kind of quality item is what makes HN worthwhile.