Return-Path: Received: (qmail 22153 invoked from network); 21 Aug 1999 14:40:36 +0100 Received: from magnus.plus.net.uk (HELO magnus.force9.net) (195.166.128.27) by guiness.force9.net with SMTP; 21 Aug 1999 14:40:36 +0100 Received: (qmail 17809 invoked from network); 21 Aug 1999 13:38:48 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by magnus.plus.net.uk with SMTP; 21 Aug 1999 13:38:48 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 11IBFt-00062A-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 21 Aug 1999 14:32:21 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from smtp-out1.bellatlantic.net ([199.45.39.156]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 11IBFr-000625-00 for rsgb_lf_group@blacksheep.org; Sat, 21 Aug 1999 14:32:20 +0100 Received: from bellatlantic.net (client-151-200-125-238.bellatlantic.net [151.200.125.238]) by smtp-out1.bellatlantic.net (8.9.1/8.9.1) with ESMTP id JAA07251; Sat, 21 Aug 1999 09:29:59 -0400 (EDT) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: <37BEAA82.B926CC8C@bellatlantic.net> Date: Sat, 21 Aug 1999 09:32:50 -0400 From: "Andre' Kesteloot" X-Mailer: Mozilla 4.02 [en]C-DIAL (WinNT; U) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: Multiple tuned vertical References: <000601beeba0$859e6e80$ed29f482@win95.swipnet.se> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org Sender: Hello Chris, A mathematical (and practical) treatment of Multiple Tuning for vertical antennas can be found in: Radio Antenna Engineering by Edmund Laport McGraw Hill NY 1952 pp. 38-43 This book is obviously out of print, but I could send you photocopies of the relevant pages. 73 Andre' N4ICK *********************************** Christer Andersson wrote: > I would like to hear if anyone have tested the Multiple Tuned Vertical in some form. > I have understood that the antenna transforms the feed impedance with a factor equal to the square of the number of wires used. E.g.10 wires would raise the feed impedance about 100 times. > I'm just rebuilding my LF-station and this antenna looks very interesting. However, not much information has been found in my litterature. Links or articles would be much appreciated. > 73, > Christer / sm6pxj