[600MRG] Fantastic conditions NA --> VK, VK --> KH6 : Explanations? Part 4

[D.J.J. Ring, Jr.]

Hello,

Interesting, at very long distances, near the antipodes, there is siginal
illumination from any direction from the origin, at least I have heard it
described that way.

73

DR
On Aug 15, 2015 6:53 PM, "James Hollander" <mrsocion at aol.com> wrote:

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>    Continuing the 3rd question:  If great circle multihop doesn't explain
> the remarkable630m propagation between the USA and Australia the last two
> nights, then what?     Please add your words of wisdom and experience.
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>      73,  Jim H   W5EST
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>  OTHER EXPLANATIONS FOR FANTASTIC 630M CONDITIONS (continued)
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>   3) Lens-like lateral skew propagation in horizontal and/or vertical
> plane directed RF signal along multiple paths and focused them on the VK
> destinations. The "lens" would be a very slightly slanted reflecting
> surface of electron concentration in the ionosphere that would be curved on
> a regional geographic scale. This requires a lot of coincidental perfection
> in the curvature and surface slant.  I can't rule it out if some plausible
> way of making such a region-size slanting in the ionosphere could be
> proposed.  Ionospheric tide caused by the Aug. 15 new moon? If tidal, then
> shouldn't the fantastic 630m conditions go away and come back in 2 weeks
> when full moon high tides come?
>   4) CME/solar wind.  A CME (coronal mass ejection) hit Earth's magnetic
> field Aug. 15 ~0800z and triggered a G3 storm. Fast-moving solar wind is
> expected. (Thanks, Dick W7WKR, WD2XSH/26 for pointing this out.) Important
> coinciding event. I would like to know more.  If the CME particles follow
> field lines to the poles and produce auroras, why or how does that affect
> the equatorial region that accounts for most of the length of the US-VK
> paths. Would a CME and geomagnetic storm disrupt 630m propagation rather
> than enhance it.  If it has no effect, one needs another explanation.  Will
> US-VK path go away until the next CME?
>   5) Grayline.  I put grayline aside because XGP and XND delivered decodes
> in VK long before their sunrise times and long after VK sunset times. The
> grayline never connected the western USA with Australia.
>   6) Equatorial anomaly.  I put this aside because I picture it as a
> horizontally-sideways reflection process.  Wouldn't that have impeded the
> US-VK path across the equator?  You hear about an HF op who puts beam
> heading SE-- way off the great circle to EU--and nevertheless bounces a
> readable signal into EU. That's equatorial anomaly.
>     If you think any of these explanations are good ideas or have more
> ideas, please comment direct to              mrsocion at aol.com or post a
> reply to the reflector as you see fit.  Again, congratulations to VK3ELV,
> VK2DDI, VK2XGJ, WH2XCR, WH2XGP and WH2XND for their hard work that showed
> fantastic 630m conditions!
> --end of final Part 4--
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