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LF: Polarisation, VLF Luxembourg effect

from [Markus Vester] [Permanent Link][Original]
To: <[email protected]>
Subject: LF: Polarisation, VLF Luxembourg effect
From: "Markus Vester" <[email protected]>
Date: Sun, 8 Nov 2015 00:44:46 +0100
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Something is going on up there in the ionosphere...
 
Directional colours on my LF grabber are more variable than usual, indicating that polarisation is being stirred up. And there is strong VLF-to-LF intermodulation, shown by the appearance of coloured MSK strips in the middle of the band:
 138.83 - (23.4 - 21.75) = 137.18 kHz (purple, modulated on DCF39),
 135.43 + (23.4 - 21.75) = 137.08 kHz (red, on HGA22).
 
 
Best 73,
Markus (DF6NM)
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