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The mystery signal was received between about 0:15
and 3:30 on 137780.310, with a 3.8 mHz downward shift from about 1:30
to 2:15 - somewhat reminiscent of a DFCW "GM". Greenish colour indicates
southwesterly origin. The attached screenshot was taken at 8 UT, timescale
is 10 minutes per FFT.
I checked the other available TA grabbers around 4
UT, but no trace of the mystery signal.
73, and have a nice sunday,
Markus (DF6NM)
Sent: Sunday, September 04, 2011 5:39 AM
Subject: LF: Weak signal on 137780.3
LF,
there seems to be a signal on 137780.300 Hz, about
60 nV/m here.
Wondering whose it may be...
Best wishes,
Markus
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