Return-Path: Received: (qmail 13317 invoked from network); 4 Jan 2000 15:47:19 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by bells.core.plus.net.uk with SMTP; 4 Jan 2000 15:47:19 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 125W1d-00063S-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 04 Jan 2000 15:37:33 +0000 Received: from imo28.mx.aol.com ([152.163.225.72]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 125W1a-00063K-00 for rsgb_lf_group@blacksheep.org; Tue, 04 Jan 2000 15:37:30 +0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from WarmSpgs@aol.com by imo28.mx.aol.com (mail_out_v24.6.) id l.0.b20d3734 (4333) for ; Tue, 4 Jan 2000 10:36:46 -0500 (EST) From: WarmSpgs@aol.com Message-ID: <0.b20d3734.25a36d8e@aol.com> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Date: Tue, 4 Jan 2000 10:36:46 EST Subject: Re: LF: LF antenna To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit X-Mailer: AOL 3.0 16-bit for Windows sub 70 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: In a message dated 00-01-04 08:40:48 EST, ON7YD writes: << Basicaly a 'top inductance' reduces the voltage on the vertical part of the antenna. Assuming that the losses induced in surrounding objects (ground, houses, trees, etc...) affect mainly the electrical field this could mean that by reducing the voltage on the vertical section also the losses caused by this section are reduced. >> For what it's worth, this does seem consistent with results at my location. Although I probably don't have quite as many trees in the immediate vicinity, I found that for a given antenna current, my radiated signal on 1750 meters was appreciably better after moving some of the inductance above the ground and thereby reducing voltage on the vertical run of the antenna. (It also has the welcome side-effect of less chance of accidental RF burns.) 73, John KD4IDY