This image is at http://www.solen.info/solar/images/cycles23_24.png.
See https://arxiv.org/abs/1808.04868
See https://arxiv.org/abs/1808.04868
Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.
My beacon was turned on at about 0805z. UPDATE 0928z: Spotted by 13 stations.