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| To: | [email protected] |
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| Subject: | Re: LF: Radio Focussing by Solar Eclipse? |
| From: | pws <[email protected]> |
| Date: | Sat, 21 Mar 2015 10:15:55 +0100 |
| In-reply-to: | <816ADDCF03CD4A6E9ED49E63E4FC868A@Black> |
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Moin Markus, You wrote: Just came across at an excellent web paper by Micha Sanders (PC4M, PA3BSH) http://misan.home.xs4all.nl/eclipse.htm, dealing with observations of the HBG 75 kHz time signal during the 1999 solar eclipse. Most observers found a characteristic W-shaped fieldstrength curve, with a central maximum preceeded and followed by two minima. This was found to agree very well with a simulation based on local D-layer height variation around the moon's shadow. > ... Mentioned in the article but not shown in this version: http://lf-radio.de/misc/eclipse/eclipse_1999.png The reason was, that I used a different method: selective level meter and DVM with serial output. 73 de df3lp, Peter |
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