Return-Path: Received: (qmail 97214 invoked from network); 24 Mar 2005 21:10:10 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore03.plus.net with SMTP; 24 Mar 2005 21:10:10 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1DEZfb-000Jiu-L0 for dave@picks.force9.co.uk; Thu, 24 Mar 2005 21:15:11 +0000 Received: from [192.168.67.3] (helo=ptb-mxcore03.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1DEZfb-000Jif-0g for dave@picks.force9.co.uk; Thu, 24 Mar 2005 21:15:11 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore03.plus.net with esmtp (Exim) id 1DEZdH-0005It-1f for dave@picks.force9.co.uk; Thu, 24 Mar 2005 21:12:47 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1DEZaJ-0003bd-D0 for rs_out_1@blacksheep.org; Thu, 24 Mar 2005 21:09:43 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1DEZaI-0003bU-Ub for rsgb_lf_group@blacksheep.org; Thu, 24 Mar 2005 21:09:42 +0000 Received: from mk-smarthost-3.mail.uk.tiscali.com ([212.74.114.39]) by relay.thorcom.net with esmtp (Exim 4.43) id 1DEZaG-00022N-Ir for rsgb_lf_group@blacksheep.org; Thu, 24 Mar 2005 21:09:42 +0000 Received: from dsl-80-43-12-122.access.as9105.com ([80.43.12.122]:1994 helo=tcs01) by mk-smarthost-3.mail.uk.tiscali.com with smtp (Exim 4.30) id 1DEZaB-0000JP-4l for rsgb_lf_group@blacksheep.org; Thu, 24 Mar 2005 21:09:35 +0000 From: "Gary - G4WGT" To: rsgb_lf_group@blacksheep.org Date: Thu, 24 Mar 2005 21:10:04 -0000 Message-ID: MIME-Version: 1.0 X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal In-Reply-To: <000501c530a5$48c90d80$2102000a@ibm> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-SPF-Result: relay.thorcom.net: 212.74.114.39 is neither permitted nor denied by domain of tiscali.co.uk X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=failed,none Subject: LF: RE: How to measure antenna current? Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Hi Dick, I use an LF Tuning Meter by Jim Moritz M0BMU, you can get the pdf article from http://myweb.tiscali.co.uk/wgtaylor/LFtunemeter.pdf or http://web.ukonline.co.uk/g3ldo/LFtunemeter.pdf I find it can be used in the shack or at the base of the antenna & the results are the same, I find it a really useful LF antenna tuning aid. Regards, Gary - G4WGT - IO83qp Web : http://myweb.tiscali.co.uk/wgtaylor -----Original Message----- From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of Dick Sent: 24 March 2005 19:11 To: rsgb_lf_group@blacksheep.org Subject: LF: How to measure antenna current? Hello all, Today changed the groundsystem, resulting in an 4-5dB stronger signal. I am using an trafo , diode and meter as an indicator to tune the coil for maximum antenna current. In this list I often see people mentioning which antennacurrent they are running. I wonder how to get these values. Measuring voltage across an resistor? What about number of turns in the coil etc? 73 Dick, PA4VHF (getting stronger on 136................)