A large X1.6 solar flare occurred while I was listening on 10m. I saved a screenshot of the wspr screen to show the wavy signals that immediately followed the start of the solar flare at 1402z.

Files are here: http://mardie4.100webspace.net/pics/

One file is the screenshot of my wspr screen. Notice the wavy signals at 1404z and 1406z.

The other files are a graph of the X-ray flux from the NOAA website. The flux rose very quickly at the start of the flare.

The last file is a text file of all the 10m wspr spots from 1404z and 1406z. Of the 28 spots that were reported during that time, only 2 of them have a drift of zero.