Return-Path: Received: (qmail 13792 invoked from network); 1 Apr 2003 12:02:10 -0000 Received: from warrior.services.quay.plus.net (212.159.14.227) by mailstore with SMTP; 1 Apr 2003 12:02:10 -0000 Received: (qmail 13715 invoked from network); 1 Apr 2003 12:02:12 -0000 Received: from post.thorcom.com (193.82.116.70) by warrior.services.quay.plus.net with SMTP; 1 Apr 2003 12:02:12 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.14) id 190KQ3-0005cD-57 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 01 Apr 2003 12:59:11 +0100 Received: from [209.225.8.38] (helo=remt28.cluster1.charter.net) by post.thorcom.com with esmtp (Exim 4.14) id 190KPu-0005c0-UD for rsgb_lf_group@blacksheep.org; Tue, 01 Apr 2003 12:59:03 +0100 Received: from [66.189.48.230] (HELO johncellarnew) by remt28.cluster1.charter.net (CommuniGate Pro SMTP 3.5.9b) with SMTP id 3194876 for rsgb_lf_group@blacksheep.org; Tue, 01 Apr 2003 06:58:30 -0500 Message-ID: <002a01c2f83d$c99e8d60$0500a8c0@charter.net> From: "John Andrews" To: rsgb_lf_group@blacksheep.org References: <002b01c2f824$ecb39b60$2602a8c0@WorkGroup> Date: Tue, 1 Apr 2003 11:59:37 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: LF: Re: Re: RE: GAIN Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=-9.8 required=5.0tests=QUOTED_EMAIL_TEXT,REFERENCESversion=2.51 X-Spam-Checker-Version: SpamAssassin 2.51 (1.174.2.5-2003-03-20-exp) 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 Mike, > I have seen people use 'series' and 'parallel' resonating when talking about > loops, but what is the difference - surely if it is a continuous loop they > are both the same? Can someone clarify, please. The difference is in the coupling method. The "series" version uses a step-down transformer between the transmission line and the loop, with the low-impedance secondary wired in series with the loop and tuning capacitor. The "parallel" version uses a step-up transformer, with the high-impedance secondary placed across the tuning capacitor. The performance of the antenna should be the same in either case. John Andrews, W1TAG