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Yes, I happened to come in from outdoors just in time to
enjoy the pretty on-screen activity.
Here's a screenshot and my notes from one of the
"good old days", when I was still working on the first version of the colour-DF
system:
QRSS and DFCW signals (March 9,
2003)
The above image of the top part of the LF amateur
band was taken on a sunday morning and shows quite a bit of activity from
G3XDV, DL2HRE, S57A, DF8ZR, I5TGC, DK1IS (50 km from me), OH5UFO, YU7AR and
IK5ZPV. Background signals are DBF39 FSK-bursts every 10 s (purple vertical
lines), the continuous carrier on 137689.6 (yellow) and a sample-rate alias of
DBF39's carrier.
Best 73, and thanks for the
signals!
Markus (DF6NM)
Sent: Sunday, May 15, 2011 6:51
PM
Subject: LF: 137
kHz!
LF,
Activity on the DF6NM and other grabbers
on 137.7 kHz, in 3 colors:
DL6MDD (green), DB6NT (pink) and DK7FC
(turquoise) :-)
Others want to join in to make a full band like in a 40m
contest? ;-)
Let's make a rainbow on DF6NMs grabber :-)
73,
Stefan/DK7FC
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