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Date: Fri, 9 Mar 2012 13:09:29 +0000 (GMT)
From: ALAN MELIA <alan.melia@btinternet.com>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: Big solar flare - major geomagnetic storms to follow
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Hi Roelof, very interesting! I am always hesitant about extrapolating the r=
esults I have for 139kHz up the frequency range. It would seem from your co=
mments that the attenuation may be higher (TF & SM are single hop) at highe=
r frequencies. This is interesting in the way the ideas fit with 500kHz DX.=
 I guess maybe I should expect this....but I much prefer solid experimental=
 data :-))=0A"Never mind the theory, show me the measurements" :-))=0A=0ATh=
anks and Best Wishes=0AAlan=0AG3NYK=0A=0A--- On Fri, 9/3/12, Roelof Bakker =
<roelof@ndb.demon.nl> wrote:=0A=0A> From: Roelof Bakker <roelof@ndb.demon.n=
l>=0A> Subject: Re: LF: Big solar flare - major geomagnetic storms to follo=
w=0A> To: rsgb_lf_group@blacksheep.org=0A> Date: Friday, 9 March, 2012, 11:=
29=0A> Hello Alan,=0A> =0A> In the NDB band the effects were rather dramati=
c.=0A> Propagation from Scandinavia was very poor/non-existant.=0A> Even cl=
ose by stations e.g. from Poland were much weaker=0A> than usual.=0A> =0A> =
One of my propagation markers is NDB VM-375 from Iceland.=0A> It is very ra=
re not to hear it, but yesterday evening it was=0A> completely gone.=0A> At=
 04:00 UTC this morning, I could only spot a weak trace.=0A> =0A> The band =
noise was also very low, which indicates that=0A> distant QRN was not propa=
gated very well!=0A> =0A> All in all quite interesting!=0A> =0A> 73,=0A> Ro=
elof, pa0rdt=0A> =0A>