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Hallo Stefan
The drifting signal whith center at 474,4kHz whith sidebands
50Hz ist since 4 or 5 Years permanent 365/7/24.
I
think it is a advertising plant or a neon sign in the
geographical triangle hamburg kiel cuxhaven. we want to make it more accurate in the
spring.
73 Eberhard DL3ZID
Am 14.02.19 um 19:48 schrieb DK7FC:
Hello Eberhad,
Interesting. BTW there is a QRM source that is there since years,
almost every night, a drifting signal arround 474.3...474.5 kHz. I
saw
it on your grabber as well, so i cannot be local!
You can see it right now, e.g. at
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_remote_RDF_Grabber.html
It is only visible at night, at least here. So it seems to be >
300
km distant. If my colours are more or less accurate then it comes
from
the north.
Do you know what it is?
73, Stefan
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