Return-Path: <owner-rsgb_lf_group@blacksheep.org> Received: from mtain-da03.r1000.mx.aol.com (mtain-da03.r1000.mx.aol.com [172.29.64.75]) by air-ma10.mail.aol.com (v129.4) with ESMTP id MAILINMA103-b5424d53a0a145; Thu, 10 Feb 2011 03:24:01 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 35EA638000083; Thu, 10 Feb 2011 03:23:59 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PnRo3-0004Ah-M1 for rs_out_1@blacksheep.org; Thu, 10 Feb 2011 08:23:15 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PnRo3-0004AY-9Y for rsgb_lf_group@blacksheep.org; Thu, 10 Feb 2011 08:23:15 +0000 Received: from mailout-de.gmx.net ([213.165.64.22]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from <jurgenb1@gmx.de>) id 1PnRo0-0005xg-VG for rsgb_lf_group@blacksheep.org; Thu, 10 Feb 2011 08:23:15 +0000 Received: (qmail invoked by alias); 10 Feb 2011 08:23:06 -0000 Received: from p5480D52E.dip.t-dialin.net (EHLO [192.168.0.6]) [84.128.213.46] by mail.gmx.net (mp032) with SMTP; 10 Feb 2011 09:23:06 +0100 X-Authenticated: #21215289 X-Provags-ID: V01U2FsdGVkX1+08HI30Wq0EFNVftfbJQVgzzMM4fGnvuq7+H0wqZ O1Tw+ysl8gM4KW From: "Jurgen Bartels" <jurgenb2@3sdesign.de> To: rsgb_lf_group@blacksheep.org Date: Thu, 10 Feb 2011 09:23:16 +0100 MIME-Version: 1.0 Message-ID: <4D53AE84.6932.312944@jurgenb2.3sdesign.de> X-mailer: Pegasus Mail for Windows (4.41) Content-description: Mail message body X-Y-GMX-Trusted: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: how to get ground rod ressitance low 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-global-disposition: G x-aol-sid: 3039ac1d404b4d53a09f7b03 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none I just discovered that my ground rod isn't ideal by having the assumed 0= ohm to=20 earth. Measuring with 10VDC the current from neutral/waterpipe to the rod= gives=20 about 140 ohms.=20 I use a 8mm rod 1m long in wet soil. I put in another one and tried severa= l=20 places nearby and got it a bit lower, but far away from ideal. So I assume the surface size is too small, one the other hand I want a sma= ll=20 rod that can be pulled out with ease in spring when the season is over. What resistance do you get usually and what size do you use? Stefan, you wrote yesterday that you got 65 ohms with your rod on sunday.= =20 That's still pretty high Jurgen Bartels Suellwarden, N. Germany hor. Antennas: 11-ele 45-87MHz 13-ele Band-III, 48-ele UHF, FM: 15.11=20 TV: Winradio G305 / Fly2000 + video noise filter & variable IF BW FM: Downconverter + Perseus + Speclab as WFM demod. MW: staggered 300m Beverage 320=B0, 30 x 4m EWE 320=B0, Winradio & Perseu= s http://dx.3sdesign.de/tv_offset_list.htm http://dx.3sdesign.de/station_list.htm http://fewo.3sdesign.de - Vacation home: DX right at the Northsea coast