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From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
References: <47335769.5010202@freenet.de> <fc7eccec0711081148n3ff0f167g1a325698e9d75540@mail.gmail.com>
Date: Thu, 8 Nov 2007 20:10:15 -0000
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Subject: Re: LF: ULF / ELF monitoring station in Italy
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Hi Andy I never remember hearing anyone detecting a resonance that high. the
first is about 7.8Hz (from memory) and there are "harmonics" at approx 8Hz
intervals....only they are not exact multiples, Only in the very quietest
locations can you detect peaks above 30Hz. There is unfortunaely a lot of
what Renato calls Pseudo-science attracted to phenomena like this. If we
manage to get his book published in English it is a good read.

Cheers de Alan G3NYK

----- Original Message -----
From: "Andy Talbot" <andy.g4jnt@googlemail.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Thursday, November 08, 2007 7:48 PM
Subject: Re: LF: ULF / ELF monitoring station in Italy


Fascinating -  just had to go and look-up Schumann resonances in Wikipedia.
The article there says that the waveguide has a harmonic response at
59.4Hz, and gets excited by the US power grid.  In which case I would
have thought it ought to be visible, but there is nothing on the
trace.

Also, what looks like data at 80Hz - could that be a ULF submarine
transmission? Those have been observed, and there used to be a website
somwhere that showed  slow FSK in the ULF region, believed to be from
a Russian transmitter.

Andy  G4JNT



On 08/11/2007, Wolfgang Büscher <dl4yhf@freenet.de> wrote:
> Greetings all,
>
> Not LF or MF, but this may be interesting for some group members:
> Renato (IK1QFK) has set up a new automated ULF / ELF monitoring station :
>
> http://www.vlf.it/livedata.html
>
> It measures seismic (mechanical) events, the E-field, and the H-field
> (the latter with radio direction finding).
> It's amazing how clear the first few Schumann resonances can be seen in
> the E-field spectrogram.
>
> Cheers,
>  Wolf DL4YHF .
>
>
>