Return-Path: Received: (qmail 1944 invoked from network); 7 May 2001 11:59:20 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by 10.226.25.101 with SMTP; 7 May 2001 11:59:20 -0000 Received: (qmail 20863 invoked from network); 7 May 2001 11:59:20 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 7 May 2001 11:59:20 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 14wjYV-0002hw-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 07 May 2001 12:51:59 +0100 Received: from mta07-svc.ntlworld.com ([62.253.162.47]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 14wjYU-0002hr-00 for rsgb_lf_group@blacksheep.org; Mon, 07 May 2001 12:51:58 +0100 Received: from oemcomputer ([213.104.101.9]) by mta07-svc.ntlworld.com (InterMail vM.4.01.02.27 201-229-119-110) with SMTP id <20010507115126.DZXH285.mta07-svc.ntlworld.com@oemcomputer> for ; Mon, 7 May 2001 12:51:26 +0100 Message-ID: <000c01c0d6ec$0ee6b340$096568d5@oemcomputer> From: "mike.dennison" To: rsgb_lf_group@blacksheep.org References: <3AF5BC00.EEF6A5E@alg.demon.co.uk> Subject: LF: Re: Measurement of antenna current Date: Mon, 7 May 2001 12:51:24 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: GW4ALG wrote: > Today, I made some more antenna current measurements on my 12 m > vertical (and my shiny new loading coil), using a thermocouple > meter. > At resonance, the current into the base of the loading coil, was > 2.2 A. But when measuring the current into the antenna at the > hot end of the coil, the meter only indicated 1.8 A. I had > expected the reading to be the same at both ends of the coil. It should be the same, but I suspect that it is a significant part of the total length of the antenna, and is radiating. Mike, G3XDV