Return-Path: Received: from mtain-dl11.r1000.mx.aol.com (mtain-dl11.r1000.mx.aol.com [172.29.74.217]) by air-mc06.mail.aol.com (v129.4) with ESMTP id MAILINMC064-a9764d4c84e17f; Fri, 04 Feb 2011 17:59:46 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dl11.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4B0C1380002B8; Fri, 4 Feb 2011 17:59:43 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PlUbs-0006qi-K2 for rs_out_1@blacksheep.org; Fri, 04 Feb 2011 22:58:36 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PlUbs-0006qZ-80 for rsgb_lf_group@blacksheep.org; Fri, 04 Feb 2011 22:58:36 +0000 Received: from 113-mo2-8.acn.waw.pl ([62.121.95.113] helo=paranoid.lipkowski.org) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PlUbp-0003cn-Rm for rsgb_lf_group@blacksheep.org; Fri, 04 Feb 2011 22:58:36 +0000 Received: from paranoid.lipkowski.org (localhost [127.0.0.1]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id p14MwTbD019226 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 4 Feb 2011 23:58:29 +0100 Received: from localhost (sq5bpf@localhost) by paranoid.lipkowski.org (8.13.7/8.13.6/Submit) with ESMTP id p14MwTNo019223 for ; Fri, 4 Feb 2011 23:58:29 +0100 X-Authentication-Warning: paranoid.lipkowski.org: sq5bpf owned process doing -bs Date: Fri, 4 Feb 2011 23:58:29 +0100 (CET) From: Jacek Lipkowski To: rsgb_lf_group@blacksheep.org In-Reply-To: <4D4C4EB6.6060407@iup.uni-heidelberg.de> Message-ID: References: <4D4C4EB6.6060407@iup.uni-heidelberg.de> MIME-Version: 1.0 X-Spam-Score-sq5bpf: -2.601 () BAYES_00,SPF_HELO_PASS,SPF_PASS X-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Earth-mode or not earth-mode Content-Type: MULTIPART/MIXED; BOUNDARY="17435139-442966789-1296860309=:1022" 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-global-disposition: G x-aol-sid: 3039ac1d4ad94d4c84df4491 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --17435139-442966789-1296860309=:1022 Content-Type: TEXT/PLAIN; charset=iso-8859-2; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE On Fri, 4 Feb 2011, Stefan Sch=E4fer wrote: > What about a closed loop between two HV transmission line towers? [...] > Has someone tried that before? :-) there was a vlf experiment done in the USA http://qru.de/w4dex-vlf.html ,= =20 that used a big loop mounted to power line poles (below the power line of= =20 course). they got 10km from abt 100W. this is very similar, but the=20 coupling loop is isolated. using a loop between the towers is easier - i= =20 haven't tried that. btw. i have an international gas pipeline nearby:=20 http://en.wikipedia.org/wiki/Yamal%E2%80%93Europe_pipeline opportunity for dx maybe? :) jacek --17435139-442966789-1296860309=:1022--