Still looking for more detail, but it's interesting these broad spectrum spikes seem to be around times of flares when EM47qu (my location) was still likely to see/hear the sun.
I dunno the times are close, but not really right. more research needs to be done to make sure I'm logging the times right, I'm pretty sure I am. If so, they don't really seem to always line up.
There's definitely something causing wide band noise, or a sweep from time to time. The 1/27 11:08 & 20:15 seem close, as does the 22:05 and 1/28 00:31-39 is on time also.
However in the graph below there's something at 1/28 0240 that isn't in the NOAA tabular data below. It may be something else, or perhaps it wasn't a solar flare, but some other galactic event?
This graph has a tighter time scale