Return-Path: Received: (qmail 14994 invoked from network); 24 Aug 1999 12:22:48 +0100 Received: from magnus.plus.net.uk (HELO magnus.force9.net) (195.166.128.27) by guiness.force9.net with SMTP; 24 Aug 1999 12:22:48 +0100 Received: (qmail 28244 invoked from network); 24 Aug 1999 11:21:13 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by magnus.plus.net.uk with SMTP; 24 Aug 1999 11:21:13 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 11JETn-0002sN-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 24 Aug 1999 12:11:03 +0100 Received: from nms.rz.uni-kiel.de ([134.245.1.2]) by post.thorcom.com with smtp (Exim 3.02 #1) id 11JETm-0002sI-00 for rsgb_lf_group@blacksheep.org; Tue, 24 Aug 1999 12:11:02 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from srv1.mail.uni-kiel.de by nms.rz.uni-kiel.de with Local-SMTP (PP); Tue, 24 Aug 1999 13:10:31 +0200 Received: from nephro.uni-kiel.de ([194.94.166.130]) by srv1.mail.uni-kiel.de (8.9.1b+Sun/8.9.1) with ESMTP id NAA22791 for ; Tue, 24 Aug 1999 13:10:50 +0200 (MET DST) Message-ID: <37C27CF0.AED7C492@nephro.uni-kiel.de> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Date: Tue, 24 Aug 1999 13:07:28 +0200 From: "P. W. Schnoor" Organization: Clinic of Nephrology, University of Kiel X-Mailer: Mozilla 4.5 [en] (X11; I; Linux 2.0.36 i586) X-Accept-Language: de, en To: rsgb_lf_group@blacksheep.org Subject: Re: LF: Multiple tuned vertical References: <000f01beee09$200ea6a0$b597b38f@w8k3f0> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hello, Dick Rollema wrote: > > In the Dutch Magazine "Radio-Nieuws"of 1 April 1925 I found a treatment of > the multiple tuned antenna by Ir. (later Prof.) Huijdts. It confirms what > Rik, ON7YD, expected: In a multiple tuned antenna with N radiators each one > has a loading coil of N times the selfinductance of the coil for a single > radiator. Simulation with ELNEC confirms this in general: Not exactly N times higher but somewhat higher, increasing with N. If mistuned at one leg only this leg will degenerate to a loop antenna (via earth, side fed) and the whole system will be a fine dummy or cloud burner at best. 54°16'N / 10°04'E, JO54ag 73 es gl de Peter, DF3LP