Return-Path: Received: from mtain-dg08.r1000.mx.aol.com (mtain-dg08.r1000.mx.aol.com [172.29.65.16]) by air-dc10.mail.aol.com (v129.4) with ESMTP id MAILINDC104-86a84bd82bfb3a3; Wed, 28 Apr 2010 08:37:15 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dg08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 84FC1380000A1; Wed, 28 Apr 2010 08:37:13 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1O76UU-00030L-GR for rs_out_1@blacksheep.org; Wed, 28 Apr 2010 13:35:46 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1O76UU-00030C-3t for rsgb_lf_group@blacksheep.org; Wed, 28 Apr 2010 13:35:46 +0100 Received: from mail.hurontel.on.ca ([216.46.129.11]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1O76US-0007di-A4 for rsgb_lf_group@blacksheep.org; Wed, 28 Apr 2010 13:35:46 +0100 Received: from [192.168.1.100] (pppoe.dyn-216.46.157.81.hurontel.on.ca [216.46.157.81]) by mail.hurontel.on.ca (Postfix) with ESMTP id 48C1D4DD2ED; Wed, 28 Apr 2010 08:35:40 -0400 (EDT) From: John Bruce McCreath Date: Wed, 28 Apr 2010 08:35:38 -0400 Message-Id: Cc: rsgb_lf_group@blacksheep.org To: "& UK) and MedFer bands Discussion of the Lowfer (US European" Mime-Version: 1.0 (Apple Message framework v1078) X-Mailer: Apple Mail (2.1078) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Subject: LF: Antenna Article 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-global-disposition: G x-aol-sid: 3039ac1d41104bd82bf972a2 X-AOL-IP: 193.82.116.20 Hello LFers & Lowfers, Volume 7 of the ARRL Antenna Compendium has an interesting article by John= , VE2CV, on an electrically small antenna for 160 meters. He mentions how a virtual inductance can be crea= ted at the top of a tower by means of "insulating a suitable conductor inside the tower and shorting it to th= e tower at some judicious length away from the end." The top loading wires are attached to the top of this con= ductor which extends above the top of the tower by some distance. Has anyone here tried this very interesting approach? I don't recall hea= ring or reading of this method of putting=20 an inductor at the top of a vertical section of a top loaded LF antenna.= Being more of a mechanical nature rather than the usual elevated coil, its losses may be less. I might give it a= try myself just to check it out. =20 73, J.B., VE3EAR LowFER Beacon "EAR" 188.830 kHz. QRSS30