From: Gerhard Hickl <gerhard.hickl@aon.at>
To: rsgb_lf_group@blacksheep.org
In-Reply-To: <010801cb5e7a$18c955a0$4001a8c0@lark>
References: <1285607600.1755.7.camel@gerhard-desktop>
	 <010801cb5e7a$18c955a0$4001a8c0@lark>
Date: Thu, 30 Sep 2010 20:41:37 +0200
Message-ID: <1285872097.1476.3.camel@gerhard-desktop>
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Subject: Re: LF: Re: Aliens on LF !
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Alan !

Thank for your reply. I don't mind you to post this picture wherever you
like. It would be interesting for me to get a clue where it could come
from and to know, where to search for it.

73 es gl

OE3GHB

Gerhard
 


Am Montag, den 27.09.2010, 20:22 +0100 schrieb Alan Melia:
> Hi Gerhard well those a pretty :-)) and very like space invaders! I have
> never seen anything quite like that. I would suggest they are an effect from
> a local source. If you dont mind I would like to throw that plot at the VLF
> group who are quite knowledgable about manmade sources. Renato Romero has
> done a lot of detective work to pin some of those kind of strange effects
> down at below 24kHz.
> 
>  They seem too regular for "motor-starts" but could possibly be the
> harmonics of something like that locally. You will have to quiz the local
> "Home Improver" hobbists as to when they have been using their drills :-))
> or rush outdoors and see if you can hear any sound lasting around minute (I
> think that is the duration.)
> 
> Alan G3NYK
> 
> ----- Original Message ----- 
> From: "Gerhard Hickl" <gerhard.hickl@aon.at>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Monday, September 27, 2010 6:13 PM
> Subject: LF: Aliens on LF !
> 
> 
> > Hello Group!
> >
> > Has anybody an explanation for the kind of signals displayed on my
> > grabber sometimes?
> >
> > They appear not periodically but rather random but always around 137720.
> > I noticed them first a few month ago in spring.
> >
> > I think it is caused by an electrically device locally but which kind of
> > stuff could do this signal?
> >
> > Any ideas?
> >
> > 73 es gl
> >
> > OE3GHB
> > Gerhard
> >
> >
> 
>