Re: LF: Re: Low QRN on VLF!

[DK7FC <selberdenken@posteo.de>]

Hi VLF,

It is amazing how low the QRN is! The first season from my tree on VLF. The background in the 3.8 mHz window is black! :-)

Uwe, what is the problem with higher losses? What is the limiting factor in your system? I assume the voltage? Then you can just run some more power and you are there again :-) It would be interesting to see a trace from you again. Also we could try some EbNAut tests again. Now my VLF N-S loop is connected, pointing into your direction. Please try again :-)

73, Stefan

Am 03.10.2016 13:19, schrieb uwe-jannsen@kabelmail.de:

Paul, Markus,
it was me on 8270Hz with a short test. I found the surrounding loss too high. so I hve to wait some weeks until the trees etc are "sapless".
73
Uwe/dj8wx

 

Von: Markus Vester <markusvester@aol.com>
Gesendet: 02.10.2016 20:13
An: <rsgb_lf_group@blacksheep.org>
Betreff: Re: LF: Re: Low QRN on VLF!

 

Paul, thanks for the nice report! Of course I knew already, keenly watching your spectrogram!

On 8970.00 I'm now also getting a weak trace in 63 uHz. But with my current setup I cannot completely rule out 1pps leakage from the GPS wiring. Nothing on Stefan's N-S-loop though. Wonder who it might be...

Where have all the grabbers gone? 

Best 73,
Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: Paul Nicholson <vlf0403@abelian.org>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: So, 2 Okt 2016 7:30 pm
Betreff: Re: LF: Re: Low QRN on VLF!
 

Markus wrote:

> Sending a 10 uW carrier on 8270.0025 Hz since 8:20 UT [1st Oct].

Your usual good signal here. Also today, looks like someone
on 8270.000 this morning for a few hours.

http://abelian.org/vlf/fbins.shtml#p=1475420400&b=080&s=sp

--
Paul Nicholson
--