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LF: Traces on 137 kHz in VK again

To: rsgb_lf_group@blacksheep.org
Subject: LF: Traces on 137 kHz in VK again
From: Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>
Date: Mon, 03 Sep 2012 22:20:45 +0200
Cc: Edgar J Twining <edgarjtwining@virginbroadband.com.au>
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Hello LF group,

I just noted traces of my DFCW-180 transmissions again detected by Edgar J. Twining in Tasmania, QE37PD, 16806 km. Capture: https://dl.dropbox.com/u/19882028/LF/DK7FC%20spectrum%201-9-2012-45.jpg
As usual the traces are very weak. With a carefully schooled eye, one 
can see traces of "DK7F" arround 136.1719 kHz. For example, the K was 
finished just a few seconds before 19:00 UTC. After my interpretation of 
that, i searched for a K in my grabber capture archive and found it 
right to that time: 
https://dl.dropbox.com/u/19882028/LF/EU60_01.SEP_20.00UTC.jpg
BTW DCF-39 showed a rather low S/N to that time. Ther can be a 
significant difference between the S/N peaks from DCF and me, although 
the distance is just roughly 400 km. This effect was also seen at YV7MAE.

Again many thanks to Edgar for running his receive system, continuously and daily providing spectrograms and plots. Edgars receive antenna is an omnidirectional E field antenna.
73, Stefan/DK7FC




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