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Re: VLF: QRN

from [Stefan Schäfer] [Permanent Link][Original]
To: [email protected]
Subject: Re: VLF: QRN
From: Stefan Schäfer <[email protected]>
Date: Sun, 31 Oct 2010 16:21:43 +0100
In-reply-to: <004501cb78f2$b4d8ffd0$4001a8c0@lark>
References: <[email protected]> <[email protected]> <004501cb78f2$b4d8ffd0$4001a8c0@lark>
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Hi Alan,
Please see the lower window/capture at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_LF_DX_Grabber.html The vertical strong lines there (0...4 UTC), may they come from this flare, strongly affecting the signal levels for some short whiles? Interesting... 

73, Stefan

Am 31.10.2010 12:56, schrieb Alan Melia:

Hi Jacek, interesting but there is no real cause for absorption at present,
and it would not affect groundwave. However there was a flare this morning
at around 0400 0500z . This would have enhaced the skywave ay 225kHz  and
perhaps lead to destructive interference with the groundwave??
Alan G3NYK

----- Original Message -----
From: "Jacek Lipkowski"<[email protected]>
To:<[email protected]>
Sent: Sunday, October 31, 2010 10:26 AM
Subject: Re: VLF: QRN


On Sun, 31 Oct 2010, Stefan Schäfer wrote:


The QRN on the Dreamers Band is as low as never before since i am

monitoring

the band. My DFCW-60 window is almost dark in the moment. [...]

there seems to be increased absorption right now, maybe due to solar
x-rays. i've just tried to show my daughter how a crystal radio works, and
can barely receive Warsaw 1 on 225kHz (with active antenna and tuned
circut). normally i would receive several stations with just a diode and
low-impedance headphones.

jacek
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