Message-ID: <15a2e6d4108.marcocadeddu@tin.it>
Date: Sat, 11 Feb 2017 19:26:36 +0100 (CET)
From: "marcocadeddu@tin.it" <marcocadeddu@tin.it>
To:  <rsgb_lf_group@blacksheep.org>
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Subject: R: Re: ULF: 5 wavelengths on the 101 km band? Valid or not?
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My opinion is probably not valuable... but I guess that your winding 
work was worth Stefan! :-)
Compliments to you Stefan and compliments to the ears of Renato!
It's is really looking for the first 5 wavelenghts detection and the 
first successful transmission

73 Marco IK1HSS

----Messaggio originale----
Da: markusvester@aol.com
Data: 11-feb-2017 16.11
A: <rsgb_lf_group@blacksheep.org>
Ogg: Re: ULF: 5 wavelengths on the 101 km band? Valid or not?

In my humble opinion, this is clearly a successful detection. The 
probability of such a dash being a false positive seems negligible.

Best 73,
Markus (DF6NM)

-----Ursprüngliche Mitteilung----- 
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>; Renato Romero 
<contact@vlf.it>
Verschickt: Sa, 11. Feb 2017 14:53
Betreff: Re: ULF: 5 wavelengths on the 101 km band? Valid or not?


Attachment...

 Am 11.02.2017 14:49, schrieb DK7FC: 
Hi all, 

 Meanwhile my 1 week taking transmission, starting  01.FEB.2017 23:30 
UTC on 2970.000000 Hz at 150...170 mA is completed. I tried to leave a 
trace/peak into a range beyong 3 wavelengths. 

 Renato Romero / IK1QFK is running a 5 uHz FFT spectrogram on 2970 Hz. 
He's using a well working E field antenna in Cumiana/Italy.
 The spectrogram is running since christmas evening 2016, available at http://www.webalice.it/rromero/live_cumiana/last-LFtest_2970.jpg

 There are time markers in 1 week intervals. 

 I can see a dash, a trace right on the frequency. It appeared 2 days 
after i started transmitting, which is expected with an FFT window time 
of nearly 3 days. The SNR was up to 12 dB during the visual observation 
of incoming spectra.
 Partly, the trace disappered during the transmission time (destructive 
interference with QRN). However i can see a resulting trace of a high 
average SNR and exact (!) frequency stability relative to the other 
traces beeing present in the spectrogram.

 I would tend to call it a serious detection of my signal. Spectrogram 
experts, what's your opinion please?

 The distance is quite exactly at 5 wavelength on that 101 km band!
 It would be a first detection on ULF (0.3...3 kHz) between DL - I !


 73, Stefan