Re: LF: HF Radio black out / also on VLF!

[Markus Vester <markusvester@aol.com>]

Another even stronger one at 12 UT:

http://services.swpc.noaa.gov/images/goes-xray-flux.gif

73, Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mi, 6. Sept 2017 11:56
Betreff: Re: LF: HF Radio black out / also on VLF!

Hi Roelof,

Very interesting. It also affects VLF! Clearly visible e.g. at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
It happens since about 9 UTC.
Would have been interesting to observe the propagation on 8.27 kHz during that time...

73, Stefan

Am 06.09.2017 11:15, schrieb Roelof Bakker:

Hello all,

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 
hf-doublet.

73,
Roelof, pa0rdt
Middelburg, JO11tm

  

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     File:  HF Radio black out.jpg
     Date:  6 Sep 2017, 11:07
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