Return-Path: Received: from mtain-db07.r1000.mx.aol.com (mtain-db07.r1000.mx.aol.com [172.29.64.91]) by air-mc01.mail.aol.com (v126.13) with ESMTP id MAILINMC011-a8454b5569461fa; Tue, 19 Jan 2010 03:11:50 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-db07.r1000.mx.aol.com (Internet Inbound) with ESMTP id 013D3380000B8; Tue, 19 Jan 2010 03:11:48 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NX9Ao-00085G-F1 for rs_out_1@blacksheep.org; Tue, 19 Jan 2010 08:10:50 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NX9An-000857-Uy for rsgb_lf_group@blacksheep.org; Tue, 19 Jan 2010 08:10:49 +0000 Received: from cavuit02.kulnet.kuleuven.be ([134.58.240.44]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NX9Al-0003JT-Bu for rsgb_lf_group@blacksheep.org; Tue, 19 Jan 2010 08:10:49 +0000 Received: from smtps01.kuleuven.be (smtpshost01.kulnet.kuleuven.be [134.58.240.74]) by cavuit02.kulnet.kuleuven.be (Postfix) with ESMTP id 6660E51C001 for ; Tue, 19 Jan 2010 09:10:39 +0100 (CET) Received: from PC_van_Rik.fys.kuleuven.be (dhcp-10-33-85-106.fys.kuleuven.be [10.33.85.106]) by smtps01.kuleuven.be (Postfix) with ESMTP id 4A50F31E702 for ; Tue, 19 Jan 2010 09:10:39 +0100 (CET) X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Tue, 19 Jan 2010 09:10:52 +0100 To: "rsgb_lf_group@blacksheep.org" X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe In-Reply-To: <4B554611.5020501@infoserve.net> References: <4B554611.5020501@infoserve.net> Mime-Version: 1.0 Message-Id: <20100119081039.4A50F31E702@smtps01.kuleuven.be> X-KULeuven-Information: Katholieke Universiteit Leuven X-KULeuven-Scanned: Found to be clean X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-Karma: unknown: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Antenna Current Content-Type: text/plain; charset="us-ascii"; format=flowed 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=TO_ADDRESS_EQ_REAL 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: 3039ac1d405b4b55694405d1 X-AOL-IP: 193.82.116.20 John, I am using a 1A thermo-couple meter and 1/2 ratio current transformer (to get a 4A range) since 2 years on 500kHz, without any problem. At 500kHz the values it shows are give or take 10%, so it is OK for tuning the antenna / controlling antenna current but I wouldn't rely on it for measuring the exact current. 73, Rik ON7YD - OR7T At 06:41 19/01/2010, you wrote: >Hello.... > >Can the typical thermo-couple amp meter be placed in the antenna >lead-in. I have had several fail open after a few days use. They were >not close to any metallic grounded objects, or subject to over current. >No lightning > >73 John / VE7BDQ (VX9BDQ)