Envelope-to: dave@picks.force9.co.uk Delivery-date: Tue, 10 Jan 2006 13:08:27 +0000 Received: by ptb-mxcore02.plus.net with spam-scanned (PlusNet MXCore v2.00) id 1EwJEf-0007pu-Ne for dave@picks.force9.co.uk; Tue, 10 Jan 2006 13:08:27 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (PlusNet MXCore v2.00) id 1EwJEf-0007pI-Fc for dave@picks.force9.co.uk; Tue, 10 Jan 2006 13:08:25 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1EwJDZ-0003z8-CV for rs_out_1@blacksheep.org; Tue, 10 Jan 2006 13:07:17 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1EwJDY-0003yz-UE for rsgb_lf_group@blacksheep.org; Tue, 10 Jan 2006 13:07:16 +0000 Received: from smtp6.wanadoo.fr ([193.252.22.25]) by relay2.thorcom.net with esmtp (Exim 4.51) id 1EwJkc-0006MS-FM for rsgb_lf_group@blacksheep.org; Tue, 10 Jan 2006 13:41:28 +0000 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf0607.wanadoo.fr (SMTP Server) with ESMTP id 119E91C001A5 for ; Tue, 10 Jan 2006 14:07:09 +0100 (CET) Received: from john-b5a82ea1a4 (Mix-Dijon-114-1-211.w193-249.abo.wanadoo.fr [193.249.230.211]) by mwinf0607.wanadoo.fr (SMTP Server) with ESMTP id 207EE1C00160 for ; Tue, 10 Jan 2006 14:07:07 +0100 (CET) X-ME-UUID: 20060110130708133.207EE1C00160@mwinf0607.wanadoo.fr Message-ID: <200601101407000027.04FBD03B@smtp.wanadoo.fr> In-Reply-To: <380-22006121092615282@M2W037.mail2web.com> References: <380-22006121092615282@M2W037.mail2web.com> X-Mailer: Courier 3.50.00.09.1098 (http://www.rosecitysoftware.com) (K) Date: Tue, 10 Jan 2006 14:07:00 +0100 From: "John RABSON" To: rsgb_lf_group@blacksheep.org Mime-Version: 1.0 Subject: Re[2]: LF: ferrite rods Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-PN-SpamFiltered: by PlusNet MXCore (v2.00) Peter, If you can get hold of it (I'm not sure how you do this) you will find some material on this topic in the doctoral thesis of David Gibson of Leeds University. Chapter 4 deals with antenna design and section 4.4 specifically deals with magnetic-cored antennas. 73 John G3PAI *********** REPLY SEPARATOR *********** On 10/01/2006 at 04:26 peter.cleall@virgin.net wrote: >Many thanks to all the useful information on a Ferrite rod antenna that >has >been received via the list and by direct e-mail. > >It is interesting to note that I sent the same original e-mail to another >e-mail list from which I have had no replies. You are to be congratulated >on your willingness to support others on this list. When ever I am talking >to people [in the day job] about communities of practice in education I use >this list as an example of the value of e-mail groups. > >My conclusion to the antenna is to experiment with a number of development >steps with ferrites while recognising that effort put into an airspaced >loop would yield better results. However the reduced complexity and easier >control of direction of ferrite makes it an interesting alternative. If I >have time in the summer I am considering digging up parts of the patio and >lawn to get some coax and some other cables to the bottom of the garden. >Then see if I can get planning permission ( local from "Her in doors" )then >I think a decent sized multi turn loop would be the next stage. > > >regards >peter G8AFN > > > >-------------------------------------------------------------------- >mail2web - Check your email from the web at >http://mail2web.com/ .