Return-Path: Received: from rly-md09.mx.aol.com (rly-md09.mail.aol.com [172.20.29.147]) by air-md02.mail.aol.com (v121.4) with ESMTP id MAILINMD021-925477f02aad5; Fri, 04 Jan 2008 23:08:32 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-md09.mx.aol.com (v121.4) with ESMTP id MAILRELAYINMD095-925477f02aad5; Fri, 04 Jan 2008 23:08:12 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1JAzsD-0003rn-5n for rs_out_1@blacksheep.org; Sat, 05 Jan 2008 03:39:01 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1JAzsC-0003re-G2 for rsgb_lf_group@blacksheep.org; Sat, 05 Jan 2008 03:39:00 +0000 Received: from qmta10.emeryville.ca.mail.comcast.net ([76.96.30.17]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1JAzs6-00060U-RA for rsgb_lf_group@blacksheep.org; Sat, 05 Jan 2008 03:39:00 +0000 Received: from OMTA09.emeryville.ca.mail.comcast.net ([76.96.30.20]) by QMTA10.emeryville.ca.mail.comcast.net with comcast id ZC3k1Y01h0S2fkCAA0BA00; Sat, 05 Jan 2008 03:38:19 +0000 Received: from WarrenPC ([24.91.18.115]) by OMTA09.emeryville.ca.mail.comcast.net with comcast id ZFe01Y0032Uxt088V00000; Sat, 05 Jan 2008 03:38:07 +0000 X-Authority-Analysis: v=1.0 c=1 a=YCAETsNkAAAA:8 a=K0p3KLAHkyAxaJN801IA:9 a=IXUYG1GhGqZ_ksx4xXUA:7 a=dbyC68TdKk7CyhSHRSlxfN-mgXEA:4 a=wk6s2zzMB60A:10 a=owhbxUb_RjYA:10 Message-ID: <73CC64C0CC0A473C9A0994EEA582CE68@WarrenPC> From: "K2ORS" To: , References: <477EB24F.7000905@kc3ol.dynip.com> <000001c84f48$7c3ef700$0b01a8c0@weazle> In-Reply-To: <000001c84f48$7c3ef700$0b01a8c0@weazle> Date: Fri, 4 Jan 2008 22:38:19 -0500 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6000.16480 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16545 X-Karma: 0: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Re: Interesting reading Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original 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=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME 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 : ? J.B., I believe that the GAP line of amateur verticals does something very similar. 73 Warren K2ORS ----- Original Message ----- From: "J. B. Weazle McCreath" To: Cc: Sent: Friday, January 04, 2008 10:10 PM Subject: LF: Interesting reading > 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 > > > >