There was geomag strom on the 17th March, which
depressed the Dst to -135nT and on the 21st a further small even depressed the
recovering Dst index to about -65nT again. The path is 8 hops, so 7 times
through the absorbing precipitated electrons.
Currently the Dst has been above -20nT since the
2nd and fairly stable, so there are very few precipitated electrons (if any) to
provide excess absorption in the darkness zone.
Obviously the shorter the length of darkness then
there is a reduced probability of success, but if would seem that there
could be a sweet spot 2 to 3 weeks either side of the equinox for this path. It
will also require a period with a favourable Dst (>-20nT on Colorado
Uni.estimate)
Alan
G3NYK
----- Original Message -----
Sent: Tuesday, April 09, 2013 1:09
PM
Subject: LF: Best results so far from
Germany to Tasmania
LF,
Last evening there was excellent LF propagation
from EU to VK. Edgar J. Twining (SWL) was watching the LF DX window for
several weeks now. The season on that path in spring (EU) 2013 was very poor
and we already thought that the season is over. However yesterday the path was
open for a exceptional long time and the S/N was very good! Transmissions were
done in DFCW-180. I've been on air for several days now and such a result is
most probably possible for 1 time in the year or maybe 2 years.
These
are the results:
My signal: https://dl.dropbox.com/u/19882028/LF/DK7FC%20WR%20ver%20spectrum%20-18.PNG
DCF39:
https://dl.dropbox.com/u/19882028/LF/DCF39%20WR%20ver%20spectrum%20-14.PNG
DCF39
plot: https://dl.dropbox.com/u/19882028/LF/DCF39%20WR%20ver%20plot%202013-04-08%2021-30.jpg
The
path is 16806 km, http://no.nonsense.ee/qthmap/?qth=QE37PD&from=jn49ik00wd
It
shows once again that it is always worth to transmit and to receive/watch for
exceptional conds(x) on the bands!
Many thanks to Edgar for his
continuous patience and interest to receive on 137 kHz from the other side of
the world!
73, Stefan/DK7FC
