interesting. It also affects VLF! Clearly visible e.g. at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
happens since about 9 UTC.
Would have been interesting to observe the
propagation on 8.27 kHz during that time...
06.09.2017 11:15, schrieb Roelof Bakker:
Now something different:
It looks like a severe radio black out of HF is ongoing.
I have never seen this before. See attachment.
This is also an opportunity to look at PLC interference at the lower
bands, which is normally covered by signals.
I checked it on 3 different antennas: mini-whip, loop and
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File: HF Radio black out.jpg
Date: 6 Sep 2017, 11:07
Size: 61486 bytes.