Return-Path: Received: (qmail 81069 invoked from network); 6 Jan 2004 14:09:54 -0000 Received: from unknown (HELO ptb-mxscan02.plus.net) (212.159.14.236) by ptb-mailstore02.plus.net with SMTP; 6 Jan 2004 14:09:53 -0000 Received: (qmail 88823 invoked from network); 6 Jan 2004 14:09:53 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore02.plus.net (212.159.14.216) by ptb-mxscan02.plus.net with SMTP; 6 Jan 2004 14:09:40 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1Adrts-000MLj-Mk for dave@picks.force9.co.uk; Tue, 06 Jan 2004 14:09:40 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Adrtc-0003iA-Fh for rs_out@blacksheep.org; Tue, 06 Jan 2004 14:09:24 +0000 Received: from [62.253.164.44] (helo=mta4-svc.business.ntl.com) by post.thorcom.com with esmtp (Exim 4.14) id 1Adrtb-0003i1-Sl for rsgb_lf_group@blacksheep.org; Tue, 06 Jan 2004 14:09:23 +0000 X-Fake-Domain: l8p8y6 Received: from l8p8y6 ([62.252.228.85]) by mta4-svc.business.ntl.com (InterMail vM.4.01.03.37 201-229-121-137-20020806) with SMTP id <20040106140922.XFJZ13664.mta4-svc.business.ntl.com@l8p8y6> for ; Tue, 6 Jan 2004 14:09:22 +0000 X-Bad-Message-ID: no DNS (l8p8y6) Message-ID: <001401c3d45a$7fb4b400$55e4fc3e@l8p8y6> From: "hamilton mal" To: rsgb_lf_group@blacksheep.org References: <000201c3d2f3$c4fb5f40$61e4fc3e@l8p8y6> <6.0.1.1.2.20031229161651.027e8660@POP3.freeler.nl> <000001c3d009$acf7a620$c7e47f50@Smisan> <6.0.1.1.2.20040103121138.0280f960@POP3.freeler.nl> <000601c3d2c3$2bd34e70$b733f7c2@johnb5a82ea1a4> <6.0.1.1.2.20040104163146.027efbe0@POP3.freeler.nl> <000201c3d2f3$c4fb5f40$61e4fc3e@l8p8y6> <5.1.0.14.0.20040106090928.03a8c2a0@u0019445.kuleuven.be> Date: Tue, 6 Jan 2004 13:25:09 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: Re: LF: Horizontally polarised radiation Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on post.thorcom.com X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_40_50,HTML_MESSAGE autolearn=no version=2.60 X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-PN-SPAMFiltered: yes X-Spam-Rating: 2 Content-transfer-encoding: 8bit
 
----- Original Message -----
Sent: Tuesday, January 06, 2004 8:16 AM
Subject: Re: LF: Horizontally polarised radiation

Hello group,

It is an "idée fixe" that a horizontal wire must radiate a horizontal polarized EM-wave.
A nice example of a mechanical horizontal construction that radiates a vertical polarized signal is the DDRR antenna.
So a large horizontal topload close to ground will in most cases improve the antenna efficiency (reduce the loss resistance ... footprint theory) but the radiated signal will be nevertheless mainly vertical polarized.

73, Rik  ON7YD

At 17:47 5/01/2004 +0100, you wrote:
 
Rik
I agree with your observations. Some are being misled by computer modelling and antenna theory not applicable to the type of small LF antennas used by radio amateurs.
73 de Mal/G3KEV