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Author Topic: Propagashuns  (Read 947 times)

Offline Josh

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Propagashuns
« on: September 09, 2019, 2140 UTC »
Yep.

Anyway, anyone ever notice a slight reduction in overall sig strength on hf at local midday? My theory is with the sun being right overhead, the d layer absorption is greatest and it partially eats hf sigs, not just ambc. Starts sometime around noon or shortly after, till after 1pm or so. Could just be guys went to lunch or something.

Needs a sporty name like Brief Meridian HF Absorption.
Or mebbe Solar Zenith HF Perturbation Period.
Conveniently located near Vincennes Indiana.

Offline ChrisSmolinski

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Re: Propagashuns
« Reply #1 on: September 10, 2019, 1119 UTC »
D layer absorption certainly seems plausible.
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
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Offline Josh

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Re: Propagashuns
« Reply #2 on: September 10, 2019, 1739 UTC »
It's the only reason I can come up with.
Conveniently located near Vincennes Indiana.