Return-Path: Received: (qmail 17171 invoked from network); 24 Dec 2002 07:27:05 -0000 Received: from netmail02.services.quay.plus.net (212.159.14.221) by mailstore with SMTP; 24 Dec 2002 07:27:05 -0000 Received: (qmail 28894 invoked from network); 24 Dec 2002 07:26:56 -0000 Received: from post.thorcom.com (193.82.116.70) by netmail02.services.quay.plus.net with SMTP; 24 Dec 2002 07:26:56 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.12) id 18QjRj-0005jT-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 24 Dec 2002 07:25:47 +0000 Received: from [62.253.164.46] (helo=mta6-svc.business.ntl.com) by post.thorcom.com with esmtp (Exim 4.12) id 18QjRe-0005jK-00 for rsgb_lf_group@blacksheep.org; Tue, 24 Dec 2002 07:25:42 +0000 Received: from jackie ([217.137.94.3]) by mta6-svc.business.ntl.com (InterMail vM.4.01.03.27 201-229-121-127-20010626) with SMTP id <20021224072541.NAEE21179.mta6-svc.business.ntl.com@jackie> for ; Tue, 24 Dec 2002 07:25:41 +0000 Message-ID: <005401c2ab1e$499d2840$035e89d9@jackie> From: "Steve Thompson" To: rsgb_lf_group@blacksheep.org References: <000c01c2aaa4$3a7e2820$9ce8fc3e@l8p8y6> Date: Tue, 24 Dec 2002 07:30:07 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: LF: Re: Loops again Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=0.5 required=5.0tests=REFERENCES,SPAM_PHRASE_00_01,USER_AGENT_OEversion=2.43 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: rsgb_lf_group-outgoing@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false ----- Original Message ----- From: hamilton mal To: Sent: 23 December 2002 16:55 Subject: LF: Loops again With all the loop talk that has been going on since before time began has anyone found a design for a near perfect small loop, suppose its like how long is a piece of string, obviously the bigger the better but then there is the diminishing returns senario, it there much noticeable difference between a 2 meter side square loop and a 4meter. Which is better a single turn loop, several turns in series, several turns in parallel and the best method of feed and matching at the loop. ------------------ This site gives a good treatise on loop antennas from first principles, and provides the maths to let you consider what to expect with changes in size and numbers of turns. http://www.ece.mcmaster.ca/faculty/georgieva/temp/Antennas_L11.pdf Steve