Return-Path: Received: (qmail 23839 invoked from network); 25 Dec 2002 02:41:39 -0000 Received: from murphys.services.quay.plus.net (212.159.14.225) by mailstore with SMTP; 25 Dec 2002 02:41:39 -0000 Received: (qmail 5228 invoked from network); 25 Dec 2002 02:41:26 -0000 Received: from post.thorcom.com (193.82.116.70) by murphys.services.quay.plus.net with SMTP; 25 Dec 2002 02:41:26 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.12) id 18R1T7-0001YL-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 25 Dec 2002 02:40:25 +0000 Received: from [63.171.43.2] (helo=ns2.genesis-technology.com) by post.thorcom.com with esmtp (Exim 4.12) id 18R1T6-0001YC-00 for rsgb_lf_group@blacksheep.org; Wed, 25 Dec 2002 02:40:24 +0000 Received: from we0h ([65.165.20.173]) by ns2.genesis-technology.com (8.10.2/8.10.2) with SMTP id gBP2eHP14387 for ; Tue, 24 Dec 2002 20:40:17 -0600 From: "WE0H" To: rsgb_lf_group@blacksheep.org Date: Tue, 24 Dec 2002 20:40:49 -0600 Message-ID: MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 In-reply-to: <003601c2ab4a$46750940$89ccfc3e@l8p8y6> Importance: Normal Subject: LF: RE: Re: Re: Loops again Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=-0.8 required=8.0tests=IN_REP_TO,QUOTED_EMAIL_TEXT,SPAM_PHRASE_00_01, USER_AGENT_OUTLOOKversion=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 Then why did my 1-watt signal go 1302 miles the other week? I was sending QRSS-30 and the receive station was southwest from here. My loop points north and south. It usually goes out past 500 miles in QRSS and over 160 miles in CW with the receiving station listening to it with his ears. It is an Ashlock loop maybe that is the difference??? Mike>WE0H http://www.we0h.us/lf WE 185.3026kc QRSS & -.-. .-- -----Original Message----- From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of hamilton mal Sent: Tuesday, December 24, 2002 6:45 AM To: rsgb_lf_group@blacksheep.org Subject: LF: Re: Re: Loops again ----- Original Message ----- From: "Steve Thompson" To: Sent: Tuesday, December 24, 2002 7:30 AM Subject: LF: Re: Loops again > > ----- 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 Thanks Steve. Its a wonderful article and has certainly refreshed my mathematical skills. It starts off by saying that small loops are very INEFFICIENT and because of the high losses really only suitable for Receiving purposes. Not very promising. 73 De G3KEV > > >