Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mk06.r1000.mx.aol.com (Internet Inbound) with ESMTP id B2314380000CD; Sun, 6 Jan 2013 12:54:50 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TrtQz-0008Rg-M7 for rs_out_1@blacksheep.org; Sun, 06 Jan 2013 16:50:53 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TrtQz-0008RX-7U for rsgb_lf_group@blacksheep.org; Sun, 06 Jan 2013 16:50:53 +0000 Received: from mail-qc0-f172.google.com ([209.85.216.172]) by relay1.thorcom.net with esmtps (TLSv1:RC4-SHA:128) (Exim 4.77) (envelope-from ) id 1TrtQw-0001km-5S for rsgb_lf_group@blacksheep.org; Sun, 06 Jan 2013 16:50:52 +0000 Received: by mail-qc0-f172.google.com with SMTP id b25so11139648qca.31 for ; Sun, 06 Jan 2013 08:50:28 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=2lYiILmBWgjdwYbQvA/N1hUHOq2n5SOPMWDpqhq2Hz8=; b=aawfxgLjGztxnz2+BwTqNxUFcb/EIyccgiR9XxQcqX0Q39HNObPtl/FwlaIissTYpi vnt84kheAe8MdWttJixmWwkg+YHaGEGMkg5rBsLRyboYn9IWo5sE7Rb39Inpoflkj+bN 9B7pdKRlvSHspJuC/jUd186Eau7GY/5xQFLemPb7bwQYvH57n+rVcUHGdDwLo/lT6zyA wJFi1X35tR1ljPzwtjb2BO9D48Y72FeJ+suMOJW1mIs/iX+fqAhSwBKTjrDFqQ/eZUUl Tqp/RipM/tjuQ9Ek7Gspyd22hoq5v/td9Fk8OeQuU/kaoha2trQmts4OwLOwPT/k2XZC X5kQ== MIME-Version: 1.0 Received: by 10.224.179.67 with SMTP id bp3mr32548857qab.7.1357491028435; Sun, 06 Jan 2013 08:50:28 -0800 (PST) Received: by 10.229.156.18 with HTTP; Sun, 6 Jan 2013 08:50:28 -0800 (PST) Date: Sun, 6 Jan 2013 16:50:28 +0000 Message-ID: From: Roger Lapthorn To: "rsgb_lf_group@blacksheep.org" , rsgb_lf_group@yahoogroups.co.uk, GQRP@yahoogroups.com X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Results so far this afternoon with this "non antenna" antenna are amazing me: with an ERP that cannot be more than 5mW I am getting spots from all over the place including from Holland using nothing more than 2 earth electrodes in the ground spaced 20m apart connected by a piece of wire no more than 1.5m off the ground running along the fence! [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.216.172 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (rogerlapthorn[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 7ab87d4d3ea1d9dcb73a78e83fe4d608 Subject: LF: Earth electrode "antenna" with 472kHz WSPR TX/RX Content-Type: multipart/alternative; boundary=20cf303344198923e604d2a18247 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE 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-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mtain-mk06.r1000.mx.aol.com ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d618a50e9ba6a37d1 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --20cf303344198923e604d2a18247 Content-Type: text/plain; charset=ISO-8859-1 Results so far this afternoon with this "non antenna" antenna are amazing me: with an ERP that cannot be more than 5mW I am getting spots from all over the place including from Holland using nothing more than 2 earth electrodes in the ground spaced 20m apart connected by a piece of wire no more than 1.5m off the ground running along the fence! On RX it is equally impressive, having no problem copying G3ZJO's 5mW ERP signal at 79km as well as loads of other stations in the UK and Holland. I still have no idea really why this works as well as it does. There is a video showing the setupon my YouTube channel and on my blog. This is the same earth-electrode set-up I use on 8.97kHz VLF. It has also been tried successfully on 136kHz. 73s Roger G3XBM -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk https://sites.google.com/site/sub9khz/ http://qss2.blogspot.com/ --20cf303344198923e604d2a18247 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Results so far this afternoo= n with this "non antenna" antenna are amazing me: with an ERP tha= t cannot be more than 5mW I am getting spots from all over the place includ= ing from Holland using nothing more than 2 earth electrodes in the ground s= paced 20m apart connected by a piece of wire no more than 1.5m off the grou= nd running along the fence!

On RX it is equally impressive, having no problem copying G3ZJO&#= 39;s 5mW ERP signal at 79km as well as loads of other stations in the UK an= d Holland.=A0 I still have no idea really why this works as well as it does= . There is a video showing the setup on my YouTube= channel and on my blog.

This is the same earth-electrode set-up I use on 8.97= kHz VLF. It has also been tried successfully on 136kHz.

73s
Roger G3XBM
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