Message-ID: <4CD1C235.3080102@iup.uni-heidelberg.de>
Date: Wed, 03 Nov 2010 21:12:37 +0100
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <schaefer@iup.uni-heidelberg.de>
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Subject: Re: VLF: strange propagation effects on VLF
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Wow, thanks John,
I have seen the effect accidentally ;-)
Interesting to see the time difference between Germany and the Israel=20
Grabber by 4X1RF :-)

73, Stefan

Am 03.11.2010 21:07, schrieb John Andrews:
> Stefan,
>
> There was a C4-level solar flare at 1220 UTC from an active region=20
> behind the Sun's limb. Others noted the event at VLF. See:
> http://www.spaceweather.com/
>
> John, W1TAG
>
> On 11/3/2010 3:51 PM, Stefan Sch=E4fer wrote:
>> VLF,
>>
>> There are strange propagation effects going on on VLF in the last days.
>> I just observed that there was a significant _sudden_ rise/enhancement
>> of all the signal levels arround 12:15 UTC. This effect is observed on=
 3
>> spectrograms, DF6NM's 4X1RF's(some minutes later) and DK7FC's grabber=
 so
>> it cannot be an accident. See the pictures.
>> How can this be possible? It seems the autumn and winther period
>> provides some interesting effects there which are not completely
>> understood, at least by me ;-)
>>
>> 73, Stefan/DK7FC
>>