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Now also another strip involving DHO with
GQD:
138.83 - (23.4 - 22.1) = 137.53
kHz
73, Markus
Sent: Sunday, November 08, 2015 12:44 AM
Subject: LF: Polarisation, VLF Luxembourg effect
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).
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