15? Skewed?
That would be quite a rarity. Most of the time signals on all bands are
direct with skew propagation being more common on the lower bands and
usually only at transition points - i.e. sunrise/sunset. Note to those ready
to pounce - I'm not saying it doesn't happen - it is just much more
infrequent and one should pretty well know most of the time that EU is
roughly at 45 deg.
Magnetic deviation can account for up to about 12 deg in some places in the
US (here in the east 6 if I remember right, in AZ it was 11)...
but by 45 deg?! That is REALLY strange...
Gary
K9RX
-----Original Message-----
From: Richard Solomon
Sent: Sunday, January 22, 2017 11:23 AM
To: towertalk
Subject: Re: [TowerTalk] Strange behavior
How about using the Compass App
on your SmartPhone ?
73, Dick, W1KSZ
On Sun, Jan 22, 2017 at 8:59 AM, <john@kk9a.com> wrote:
I am trying to avoid the true north thread however I would verify that
they
are indeed pointing 45 degrees when you beam Europe. A compass can be
inaccurate around a lot of metal or if not level and it is measuring
magnetic north. If you use Google earth you can pick an object 45 degrees
from your tower and see if you beam is pointing that direction. Since you
multiple towers and beams it is possible that something is skewing the
pattern or that you have skewed propagation under these poor conditions
but
I would visually look at the direction one more time using a different
direction method.
John KK9A
To: <towertalk@contesting.com>
Subject: [TowerTalk] [SUSPECTED SPAM] Strange behavior
From: "Carol Richards" <n2mm@comcast.net>
Date: Fri, 20 Jan 2017 18:35:57 -0500
Hello all,
In late summer, I had some minor work done on my towers and antennas. I
used
a compass so that the beams were lined up correctly with N at 0 degrees
and
NE at 45 degrees, EU direction. All monoband yagis have not loosened up,
but that EU now peaks at due East on all three yagis, separate towers, The
other directions behave properly; N to JA, W to the Pacific etc. Can
anyone
explain why the change? There is about 15 db difference in signals from EU
at 90 degrees and EU at 45 degrees?
I understand that EU on 15m would be skewed at this point in the cycle,
but
40m and 20m?
Carol
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