Hello,
Recent observations also points to the solar wind being a factor amongst
all the rest.
The conception seems to be the higher speed the better. See this first
link where ZL3IX had good condx. to EU - solar wind is approaching 450
kms/hr. around Dec. 19th.
http://www.swpc.noaa.gov/ace/MAG_SWEPAM_7d.html
[http://www.swpc.noaa.gov/ace/MAG_SWEPAM_7d.html]
General explanationon Solar wind.
http://en.wikipedia.org/wiki/Solar_wind
[http://en.wikipedia.org/wiki/Solar_wind]
Henrik
OZ1ING
----- Original meddelelse -----
> Fra: Greg - ZL3IX <zl3ix@inet.net.nz>
> Til: topband@contesting.com <topband@contesting.com>
> Dato: Man, 21. dec 2009 18:39
> Emne: Re: Topband: Sunspots increase gud/bad for 160m?
>
> Hi Sam,
>
> IMO, the honest answer is that we don't really know. I don't have as
> much experience on TB as some of the OT's, but in my 12 years of
> activity I have tried to find a correlation between space weather and
> propagation, with remarkably little success.
>
> For example, on Sunday evening ZL time condx were excellent. LP
> Signals
> from G were good, and I worked my first LA's via LP. On Monday
> morning
> things were still humming, and I put 15 Eu stations in the log around
> SR. Those contacts were all in excess of 18 000km.
>
> Last night the solar flux and K index were exactly the same as the
> previous day, but prop was completely different. Tom G3OLB and I
> managed a scratchy QSO, but that was it. Same at SR just now. I could
> JUST hear IV3PRK and PA3FQA, but not with enough signal for a QSO. Go
> figure!
>
> There is one situation that seems to bring good condx fairly
> consistently, and that is when the A index is on a steep rise.
>
> That's what I have observed operating from both ZS and ZL. There
> really
> is no reliable pattern.
>
> 73 Greg, ZL3IX
>
> Sam Morgan wrote:
> > Is the increase in sunspot activity god or bad for 160m. It seems
> conditions on
> > 160m are best in winter and when we are at a sunspot cycle low? So
> are these
> > recent increases indicators that 160m propagation will be in
> decline?
> >
> > When answering, please include what it means, not only for those
> capable of
> > working all this wonderful Pacific and over the pole DX I keep
> reading about,
> >
> > but also, what it means to those of us, that dx simply means making
> in across
> > the country or just as far as Alaska or Hawaii, with low power and
> minimal antennas.
> >
> > TIA
> >
> _______________________________________________
> 160 meters is a serious band, it should be treated with respect. -
> TF4M
_______________________________________________
160 meters is a serious band, it should be treated with respect. - TF4M
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