Return-Path: Received: from mtain-mj04.r1000.mx.aol.com (mtain-mj04.r1000.mail.aol.com [172.21.164.88]) by air-mb02.mail.aol.com (v129.4) with ESMTP id MAILINMB021-a18f4c1b2a5ca4; Fri, 18 Jun 2010 04:12:12 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mj04.r1000.mx.aol.com (Internet Inbound) with ESMTP id 92018380000A8; Fri, 18 Jun 2010 04:12:10 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OPWez-0007gU-DD for rs_out_1@blacksheep.org; Fri, 18 Jun 2010 09:10:45 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OPWez-0007gL-2Z for rsgb_lf_group@blacksheep.org; Fri, 18 Jun 2010 09:10:45 +0100 Received: from smtp-out11.han.skanova.net ([195.67.226.200]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OPWex-0006Zw-Ax for rsgb_lf_group@blacksheep.org; Fri, 18 Jun 2010 09:10:45 +0100 Received: from [127.0.0.1] (81.235.167.68) by smtp-out11.han.skanova.net (8.5.114) (authenticated as u33233109) id 4BC6D1B30195D3D3 for rsgb_lf_group@blacksheep.org; Fri, 18 Jun 2010 10:10:36 +0200 Message-ID: <4C1B29FB.7090502@telia.com> Date: Fri, 18 Jun 2010 10:10:35 +0200 From: "Johan H. Bodin" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: In-Reply-To: X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: Earth electrode loop and 500kHz ERP Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit 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: 3039400c89a84c1b2a5a6a92 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Roger, the programs SOILSKIN and EARTHRES by G4FGQ (SK) will not answer your questions directly but they are related to your questions and they are interesting to play with (many of his programs are). http://www.zerobeat.net/G4FGQ/ 73 Johan SM6LKM ---- Roger Lapthorn wrote: > Questions: > > 1. Now, how big is the loop thus formed? > 2. How much of this is within the ground? > 3. What is the 500kHz ERP likely to be?