----- Original Message -----
From: "Hartmut Wolff" <[email protected]>
To: <[email protected]>
Sent: Thursday, January 26, 2006 11:23 AM
Subject: Re: LF: TR
Hi Mal,
interesting observations. Here I usual have a stronger fade-in period
(1-2 hours), followed by a deeper fade. Then signals recover depending
on the K-index of the last days. If the K-index was higher more fading
is visible. Before the stronger fade-out period starts there appeared a
deeper fade.
Attached a screenshot taken last night. It seems John, WD2XES was a bit
late and missed the good overnight period.
I'll upload more captures later the day to my website when back home
from work.
73
Hartmut
Hi Hartmut
My screen capture is totally different to yours with nothing visible during
the middle of the night.
Several thing are different here to your QTH.
You are further south and east than me and this different latitude,
especially being south makes a difference, noticeable on other bands as
well. When I go to the Algarve the propagation is totally different to my
home qth which is about 1200 miles further north.
The angle of arrival and signal capture by my vertical would be different
to your loops, my capture would favour low angle arrival signals, whereas
the loop might favour high angle so it could be that most of the signals are
arriving at higher angles for the distance involved between the USA and
Germany. When I use my E/W loop which is good to EU it is not as good to the
West and this is maybe because the USA signals are much further away, and
the angles of arrival would probably be different to those signals from EU.
These are short time observations so far, it is complicated and would need
more research. I am more interested in having QSO'S rather than delving into
propagation research !!
Because of my low noise QTH out in the countryside the vertical performs
very well and I would expect it to be better than the smaller 80m loop on
RX but like I said the vertical probably favours lower angle arrival signals
especially at the distance involved from the USA even on 137 khz.
Others might have a contribution or comment to make about our observations.
73 de Mal/G3KEV/IO94SH
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