Return-Path: Received: (qmail 1176 invoked from network); 28 May 1999 22:21:35 +0100 Received: from magnet.plus.net.uk (HELO magnet.force9.net) (195.166.128.26) by guiness.force9.net with SMTP; 28 May 1999 22:21:35 +0100 Received: (qmail 3304 invoked from network); 28 May 1999 21:25:09 -0000 Received: from punt.unica.co.uk (194.75.183.60) by magnet.plus.net.uk with SMTP; 28 May 1999 21:25:09 -0000 Received: from troy.blacksheep.org ([194.75.183.50] ident=root) by punt.unica.co.uk with esmtp (Exim 2.00 #2) id 10nU3E-0006q9-01; Fri, 28 May 1999 22:20:25 +0100 X-Priority: 3 Received: (from root@localhost) by troy.blacksheep.org (8.6.12/8.6.12) id VAA26834 for rsgb_lf_group-outgoing; Fri, 28 May 1999 21:19:38 GMT X-MSMail-Priority: Normal Received: from post.thorcom.com (root@post.unica.co.uk [194.75.183.70]) by troy.blacksheep.org (8.6.12/8.6.12) with ESMTP id VAA26830 for ; Fri, 28 May 1999 21:19:32 GMT Received: from smtp-out1.bellatlantic.net ([199.45.39.156]) by post.thorcom.com with esmtp (Exim 2.04 #3) id 10nUGS-00073I-00 for rsgb_lf_group@blacksheep.org; Fri, 28 May 1999 22:34:05 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from bellatlantic.net (client-151-200-127-44.bellatlantic.net [151.200.127.44]) by smtp-out1.bellatlantic.net (8.9.1/8.9.1) with ESMTP id RAA08955; Fri, 28 May 1999 17:17:54 -0400 (EDT) Message-ID: <374EFF33.4F2EED70@bellatlantic.net> Date: Fri, 28 May 1999 16:40:19 -0400 From: "Andre' Kesteloot" X-Mailer: Mozilla 4.02 [en]C-DIAL (WinNT; U) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org, "AMRAD Tacos" , "lowfer" Subject: Re: LF: Efficient antennas References: <3.0.1.16.19990527092130.2e475dd2@mail.cc.kuleuven.ac.be> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org Edmund Laport was Chief Engineer of RCA International when he published his 542-page book "Radio Antenna Engineering", McGraw Hill 1952. Allow me to quote from page 14 of that wonderful book: "Low-frequency-antenna engineering is an active modern subject, and one where the sources of information are few, and the problems difficult. The author has been impressed by this lack of specific information on low-frequency antennas, even after so many years of engineering effort devoted to them, as well as enormous sums of money. The reason evidently is that the compromises that have to be made in design are so extreme that the designer has no particular pride in the result and says as little as possible about it in his technical reports to the profession. Almost all papers in technical journals about low-frequency antennas are strictly descriptive and lack the detailed discussions of how the designs were conceived and developed, that one misses so much when searching for engineering guidance. This chapter will provide some useful information and explain something about the nature of the compromises that one must make in practice. Large low-frequency antenna systems involve large capital outlays, and one may pay dearly for ignorance of the practical importance of the several controlling design factors and the compromises the designer finally accepts." How aptly put :-) Andre' N4ICK.