Message-ID: <5897808B.4000004@posteo.de>
Date: Sun, 05 Feb 2017 20:44:11 +0100
From: DK7FC <selberdenken@posteo.de>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3
MIME-Version: 1.0
To: rsgb_lf_group@blacksheep.org
References: <159c6d4aa99-2cc9-11356@webprd-m36.mail.aol.com> <5884E0D8.1090102@abelian.org> <5885FBEE.3060408@posteo.de> <58861BDF.8010605@posteo.de> <58875792.7020302@posteo.de> <58879804.7010301@abelian.org> <5887ACEB.2000207@posteo.de> <5888EEDA.6070308@abelian.org> <588DE1EE.3050408@posteo.de> <588E25B1.8010009@abelian.org> <58959847.4060104@posteo.de> <3f354814-4211-b5b2-c957-a5ad9c988d96@abelian.org>
In-Reply-To: <3f354814-4211-b5b2-c957-a5ad9c988d96@abelian.org>
Subject: Re: ULF: 5 wavelengths on 2970 Hz (?) | No 8270 from here today
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Status: O

Am 05.02.2017 17:31, schrieb Paul Nicholson:
> Not significant: if I do a wide spectrum there are plenty
> of peaks of similar or greater height.  But it counts as
> 'interesting' because it's on the right frequency.

Hmm, plenty of peaks, sure, but not plenty of dashes, sharp dashes of 
high SNR (white colour in the spectrum at 
http://www.webalice.it/rromero/live_cumiana/last-LFtest_2970.jpg ) which 
start exactly on the expected time and frequency.
The latest pixel is not so strong unfortunately, probably due to QRN. 
But i bet the next ones will be, again.
And i bet the dash will end right after one week, just a dash between 
two time makers. I intend to transmit one week exactly. And i increased 
the antenna current to 170 mA a few hours ago. Yesterday it was quite 
stormy and rainy and i transmitted anyway. Today, a visual inspection 
showed no sign of HV stress, again, so things may be less critical than 
expected. 150 mA to 170 mA, that's 1 dB at least.

 From the early LF times we learned to read the weakest signals in QRSS 
or DFCW. The complete spectrogram means information. And the peak hold 
graph in the spectrum (green) shows that there only 3 peaks which have 
the same strength or a higher strength. And these peaks are rather 
blotches :-)
Anyway, a higher significance is desirable, thus i will run the 
transmission a few days longer. Then we will see if its confirmed. A 
frequency step will of course help even more to get a clear ID, but that 
takes serveral days more then. So, we will see...

73, Stefan