Return-Path: Received: from rly-mc01.mail.aol.com (rly-mc01.mail.aol.com [172.20.118.143]) by air-mc02.mail.aol.com (v120.9) with ESMTP id MAILINMC24-fc473368b72d5; Thu, 08 Nov 2007 14:51:49 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mc01.mail.aol.com (v120.9) with ESMTP id MAILRELAYINMC12-fc473368b72d5; Thu, 08 Nov 2007 14:51:27 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1IqDNC-0003AQ-EM for rs_out_1@blacksheep.org; Thu, 08 Nov 2007 19:49:06 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1IqDNB-0003AH-3F for rsgb_lf_group@blacksheep.org; Thu, 08 Nov 2007 19:49:05 +0000 Received: from rn-out-0910.google.com ([64.233.170.190] helo=rn-out-0102.google.com) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1IqDN5-00055L-3r for rsgb_lf_group@blacksheep.org; Thu, 08 Nov 2007 19:49:03 +0000 Received: by rn-out-0102.google.com with SMTP id e21so204065rng for ; Thu, 08 Nov 2007 11:48:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=azxdugddTgEwf1QusJswJ42F/78fq/YCrLFzFLm41aI=; b=AXiV4TuNzUBokbgBZxR1vbyx8YceRdv/1SkkFHZebgYagOx1353N9NvNUC5/6EwWabcOviQ8PtTKckJ7qp4sTNi1QQVudy3wBtp3cf0j/yYGoOl27eu9hKNLMBBVSAQao7OjGfBZ6ipR2SEBAwJnrF3/l/4KI5IYB9knxaqM46s= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=ORHJ6+Ygk/tPg62QoCCKiwA5p5uUpgwplMwTnUKFy3Xpw0+Pc4oR1cnZhGI5nnC4PwBC0PBNaKOmfTEsCl4A1bjicdRFIuZ6XtMKln23QIIDk9/EEwT4EReJNmg+aeHICmAfjce13SBF5LcdlEJUfo1r1/9seV6eVlbo1JFfx80= Received: by 10.150.158.8 with SMTP id g8mr199427ybe.1194551335213; Thu, 08 Nov 2007 11:48:55 -0800 (PST) Received: by 10.35.100.10 with HTTP; Thu, 8 Nov 2007 11:48:55 -0800 (PST) Message-ID: Date: Thu, 8 Nov 2007 19:48:55 +0000 From: "Andy Talbot" To: rsgb_lf_group@blacksheep.org In-Reply-To: <47335769.5010202@freenet.de> MIME-Version: 1.0 Content-Disposition: inline References: <47335769.5010202@freenet.de> DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: ULF / ELF monitoring station in Italy Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : X-Mailer: Unknown (No Version) 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 B=FCscher 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 . > > >