Return-Path: Received: (qmail 2789 invoked from network); 21 Nov 2001 09:42:55 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 21 Nov 2001 09:42:55 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 2574 invoked from network); 21 Nov 2001 09:43:11 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 21 Nov 2001 09:43:11 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 166TlU-0001AG-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 21 Nov 2001 09:33:56 +0000 Received: from mail.cc.kuleuven.ac.be ([134.58.10.6]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 166TlT-0001AB-00 for rsgb_lf_group@blacksheep.org; Wed, 21 Nov 2001 09:33:55 +0000 Received: from LCBD15.fys.kuleuven.ac.be (LCBD15.fys.kuleuven.ac.be [134.58.80.15]) by mail.cc.kuleuven.ac.be (8.9.3/8.9.0) with SMTP id KAA170358 for ; Wed, 21 Nov 2001 10:33:11 +0100 Message-ID: <3.0.1.16.20011121103048.2d4f0804@mail.cc.kuleuven.ac.be> X-Sender: pb623250@mail.cc.kuleuven.ac.be X-Mailer: Windows Eudora Pro Version 3.0.1 (16) Date: Wed, 21 Nov 2001 10:30:48 To: rsgb_lf_group@blacksheep.org From: "Rik Strobbe" Subject: Re: LF: Measuring Q In-reply-to: <001b01c17220$e9cc8820$531686d4@ericadodd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hello Peter, your method seems be OK, the losser (more loss ?) the coupling is the more accurate the Q-measurement. But keep in mind the the Q of a coil is frequency dependent, due to skin-effect, proximity effect, inter-winding capacitance etc... So it is best to choose a C that gives you a resonance close to 136kHz. 73, Rik ON7YD At 00:09 21/11/01 -0000, you wrote: >Recently I described some experiments with multilayer coils based on a Decca >coil.