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Re: Topband: K levels and skew path on 160

To: "Steven R Daniel, D.D.S." <nn4t@comcast.net>, <topband@contesting.com>
Subject: Re: Topband: K levels and skew path on 160
From: "Tom W8JI" <w8ji@w8ji.com>
Reply-to: Tom W8JI <w8ji@w8ji.com>
Date: Tue, 27 Jan 2015 14:21:00 -0500
List-post: <topband@contesting.com">mailto:topband@contesting.com>
I was rereading the article by Cary Oler and Ted Cohen (N4XX), published in
1998, which provided a good primer for understanding, as much as we can,
propagation on Topband. In one section the impact of a high K index on the
auroral oval, and its subsequent impact on signals passing through the oval, was discussed. My question is does the K index, especially at higher levels, impact the SW or SSW skew path many of us were trying to use this morning to work Ken, XW4ZW? Any information or observations will be appreciated. Best,

Steve,

From my location now, and when I was in Ohio, it was quite normal for any
signal passing near or through the north magnetic pole to never make it through via the direct path. When signals were heard, they were always skewed in some other direction.

The only exception seems to be when sunspots and geomagnetic activity are very low. In this very last solar minimum, when sunspots were absent, many stations would appear via north. Of course that gave the northern NA stations nearly north of me a clear advantage, because they were closer.

My policy is to not worry about predicting or expecting anything, and I rarely even look at solar activity. I just listen in all dark directions when the station is almost on the opposite side of the world, especially when he is anywhere near the equator and far,far, away. :)

73 Tom






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