Return-Path: Received: (qmail 840 invoked from network); 9 Dec 2000 19:47:34 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by extortion.plus.net with SMTP; 9 Dec 2000 19:47:34 -0000 Received: (qmail 24597 invoked from network); 9 Dec 2000 19:49:45 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 9 Dec 2000 19:49:45 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 144pu8-0005za-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 09 Dec 2000 19:43:32 +0000 Received: from mta03.talk21.com ([62.172.192.172] helo=t21mta03-app.talk21.com) by post.thorcom.com with esmtp (Exim 3.16 #1) id 144pu7-0005zT-00 for rsgb_lf_group@blacksheep.org; Sat, 09 Dec 2000 19:43:31 +0000 Received: from dave ([213.120.29.247]) by t21mta03-app.talk21.com (InterMail vM.4.01.02.27 201-229-119-110) with SMTP id <20001209194421.JPGD1799.t21mta03-app.talk21.com@dave> for ; Sat, 9 Dec 2000 19:44:21 +0000 Message-ID: <003301c06218$16ac4660$f71d78d5@dave> From: "Dave Sergeant" To: rsgb_lf_group@blacksheep.org References: <000001c061be$e91f5880$e52f883e@default> <001101c061ce$0d51dd40$71cc2cc3@computer> Subject: LF: Re: Crossed Field Antenna Date: Sat, 9 Dec 2000 19:39:26 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: >From Dave G3YMC Martin G5CIZ wrote: >My attention has recently been drawn to the concept of the Cross Field >Anntena. Which if it works might be the solution to problems of power and >sixe. I quote the attached snipit from the antennex web site. Yes, as Jim comments, the CFA antenna has been discussed on here several times over the years. The extract you quote from the antennex site does not seem to have changed from when I first looked at it some two years ago, and I guess the number of working CFA installations has not increased much in that time either. We are still waiting to see results from the promised long wave installation on the Isle of Man, but from what I hear that project is dragging on with problems not neccessarily related to the CFA. In general the dimensions would as Jim says make it impractical for most amateurs, whatever the band, and it seems you can always do better with a more conventional antenna, whatever the frequency. You will notice there is no mention of it in the new LF source book!!! Cheers Dave sergeantd@compuserve.com dsergeant@iee.org http://ourworld.compuserve.com/homepages/sergeantd