vlf signal

Good evening lest you help on the explanation of the signal to my receiver; ego keeps the antenna firmly to some direction, I am a novice thanks!

[Davor]

We had a class g3-class solar storm hitting the Earth on 9 and 10 January. Ever heard of whistlers and chorus? These actually do not look much like those, and the frequency range is a bit off, and the frequency variation is a bit off, so it could be just a coincidence.

[taxma1981]

[Davor]

It is not a chorus allright. It shows some oddly FM signal with a 2nd harmonic. I'd say it is artificial, and most probably related to some sort of a free running oscillator, a PSU or something.

[taxma1981]

The sharp vertical drop and elevation is electrical activity; and another photo are trademarks of the procession with the dashed line from below; These pictures are from Gold gun