Return-Path: Received: (qmail 24020 invoked from network); 18 Mar 2002 16:40:36 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 18 Mar 2002 16:40:36 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 29778 invoked from network); 18 Mar 2002 16:40:35 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 18 Mar 2002 16:40:35 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16n1fE-00074Q-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 18 Mar 2002 18:15:20 +0000 Received: from nat5.excitenetwork.com ([63.236.75.7] helo=xmxpita.excite.com) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16n1fD-00074L-00 for rsgb_lf_group@blacksheep.org; Mon, 18 Mar 2002 18:15:20 +0000 Received: by xmxpita.excite.com (Postfix, from userid 110) id 1508F1E479; Mon, 18 Mar 2002 11:36:33 -0500 (EST) To: rsgb_lf_group@blacksheep.org Subject: LF: Loop Conductors and proximity effect Rdc Rac From: "john sexton" MIME-Version: 1.0 X-Sender: computernetworks@excite.com X-Mailer: PHP Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Message-ID: <20020318163633.1508F1E479@xmxpita.excite.com> Date: Mon, 18 Mar 2002 11:36:33 -0500 (EST) Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hi Paul,
>From the interesting formula given by Cesare, the short answer to your question appears to be 1/2 inch.
I tried to find out more about Mesny's expression from the Internet, but it looks like you have to buy the book.
I wonder whether Cesare can be persuaded to tell us the formula that relates q to D/d? At a guess it appears to be logarithmic.
The second formula can be simplified to
Reff/Rrf = 1 + (q-1)*sqrt(1-Rdc/Rrf)
When D/d = 9, q = 1 so the second term disappears and Reff = Rrf.
73, John, G4CNN