Granted, this is the IARU Championship. But that’s a lot of people on the radio.
This mathematical visualization is beautiful, like a work of art.
But what is it exactly that we are looking at here?
The continuous vertical and horizontal violet lines, the bursts of light color like a seismograph needle, they look like a word cloud flipped 90° and seen from afar. What do they represent?This is a wonderful question! This is a spectral waterfall display of audio frequencies. The dense area on the left are the CW (Morse code) portions of the spectrum where there are quite a lot of people communicating in Morse code. The bright bands just to its right is the FT8 data mode (which also uses audio frequencies) to send and receive very short messages. The broad area on the right are people communicating via voice transmissions on Single Sideband.
