Return-Path: Received: (qmail 24776 invoked from network); 23 Apr 1999 19:10:41 +0100 Received: from magnet.plus.net.uk (HELO magnet.force9.net) (195.166.128.26) by guiness.force9.net with SMTP; 23 Apr 1999 19:10:41 +0100 Received: (qmail 677 invoked from network); 23 Apr 1999 18:10:53 -0000 Content-Transfer-Encoding: 8bit Received: from post.thorcom.com (194.75.130.70) by magnet.plus.net.uk with SMTP; 23 Apr 1999 18:10:53 -0000 Received: from troy.blacksheep.org ([194.75.183.50] ident=root) by post.thorcom.com with esmtp (Exim 2.04 #3) id 10akMs-0002oN-00; Fri, 23 Apr 1999 19:08:02 +0100 X-Priority: 3 Received: (from root@localhost) by troy.blacksheep.org (8.6.12/8.6.12) id SAA16962 for rsgb_lf_group-outgoing; Fri, 23 Apr 1999 18:08:14 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 SAA16958 for ; Fri, 23 Apr 1999 18:08:11 GMT Received: from fm215.facility.pipex.com ([194.131.104.225]) by post.thorcom.com with esmtp (Exim 2.04 #3) id 10akMW-0002nH-00 for rsgb_lf_group@blacksheep.org; Fri, 23 Apr 1999 19:07:40 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from blanch (usern026.uk.uudial.com [193.149.81.59]) by fm215.facility.pipex.com (8.8.6/8.8.6) with SMTP id TAA22164 for ; Fri, 23 Apr 1999 19:05:18 +0100 (BST) Message-ID: <3.0.5.32.19990423190630.0079db70@mailhost.pncl.co.uk> X-Sender: blanch@mailhost.pncl.co.uk X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Fri, 23 Apr 1999 19:06:30 +0100 To: rsgb_lf_group@blacksheep.org From: "Walter Blanchard" Subject: LF: CFA MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org For those who were wondering about how the CFA works, the following appeared in GM3HAT's ad for CFA's in "Radcom" this month (May 1999) Quote: " A conventional antenna in resonance surrounds itself with a fierce Induction Field out as far as one sixth of a lamda (his spelling), where 90% of the energy is held quarter cycle by quarter cycle in the Near Field. Only 10% manages to escape as the Radiation Field. In a Crossed Field Antenna ALL the energy flies away as the Radiation Field and so the aerials' surroundings are subjected to far less unnecessary disturbance. The new technique we use is called Poynting Vector Synthesis and we hold the original patents in the major industrial countries, and are applying for further claims" Unquote. So now we know how to multiply ERP ten times for the same input. We had better get onto it straight away! Walter G3JKV.