Return-Path: Received: from rly-me03.mx.aol.com (rly-me03.mail.aol.com [172.20.83.36]) by air-me06.mail.aol.com (v121.4) with ESMTP id MAILINME063-9aa477f003197; Fri, 04 Jan 2008 22:57:59 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-me03.mx.aol.com (v121.4) with ESMTP id MAILRELAYINME036-9aa477f003197; Fri, 04 Jan 2008 22:57:39 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1JAzL5-0003XJ-Lc for rs_out_1@blacksheep.org; Sat, 05 Jan 2008 03:04:47 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1JAzL4-0003XA-UA for rsgb_lf_group@blacksheep.org; Sat, 05 Jan 2008 03:04:46 +0000 Received: from fish2.hurontel.on.ca ([216.46.129.163]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1JAzL0-0001aP-P8 for rsgb_lf_group@blacksheep.org; Sat, 05 Jan 2008 03:04:46 +0000 Received: from weazle (pppoe.dyn-216.46.157.227.hurontel.on.ca [216.46.157.227]) by fish2.hurontel.on.ca (Spam Firewall) with SMTP id 6A131421C41; Fri, 4 Jan 2008 22:04:35 -0500 (EST) Received: from weazle (pppoe.dyn-216.46.157.227.hurontel.on.ca [216.46.157.227]) by fish2.hurontel.on.ca with SMTP id i4PnYYXKjvhqQinr; Fri, 04 Jan 2008 22:04:35 -0500 (EST) Message-ID: <000001c84f48$7c3ef700$0b01a8c0@weazle> From: "J. B. Weazle McCreath" To: Cc: References: <477EB24F.7000905@kc3ol.dynip.com> Date: Sat, 5 Jan 2008 03:10:02 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2720.3000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Interesting reading Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : n Hello Lowfers & LFers, My good wife gave me Volume 7 of the ARRL Antenna Compendium as one of my Christmas gifts. On page 3 is an article which describes a very clever way of placing inductive loading at the top of a tower which is part of a top loaded monopole. The author is John Belrose, VE2CV. It's done by placing an insulated conductor inside the upper portion of the tower. The top of the conductor extends above the tower slightly and has the top loading attached to it. The lower end of the conductor is connected to the tower to form an air-insulated coaxial line. Moving the position of this lower connection varies the length of the coaxial line which in turn varies the inductance. Has anyone here heard of this previously and/or tried it? 73, J.B., VE3EAR - VE3WZL Solar and wind powered Lowfer " EAR" 188.830 EN93dr http://www.hurontel.on.ca/~weazle