Return-Path: Received: (qmail 29181 invoked from network); 20 Jan 2005 13:51:38 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore01.plus.net with SMTP; 20 Jan 2005 13:51:38 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1CrchB-000PBi-5V for dave@picks.force9.co.uk; Thu, 20 Jan 2005 13:49:58 +0000 Received: from [192.168.67.3] (helo=ptb-mxcore03.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1CrchA-000PBX-RL for dave@picks.force9.co.uk; Thu, 20 Jan 2005 13:49:56 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore03.plus.net with esmtp (Exim) id 1Crcil-000CMU-He for dave@picks.force9.co.uk; Thu, 20 Jan 2005 13:51:35 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Crchv-0001xZ-FI for rs_out_1@blacksheep.org; Thu, 20 Jan 2005 13:50:43 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Crchv-0001xQ-3x for rsgb_lf_group@blacksheep.org; Thu, 20 Jan 2005 13:50:43 +0000 Received: from mailfe07.swip.net ([212.247.154.193]) by relay.thorcom.net with esmtp (Exim 4.43) id 1Crchr-0003RI-OL for rsgb_lf_group@blacksheep.org; Thu, 20 Jan 2005 13:50:43 +0000 X-T2-Posting-ID: 7tTLvD67BptoA2C1rjPWBw== Received: from [213.101.38.68] ([213.101.38.68] verified) by mailfe07.swip.net (CommuniGate Pro SMTP 4.2.7) with ESMTP id 77869445 for rsgb_lf_group@blacksheep.org; Thu, 20 Jan 2005 14:50:20 +0100 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [265.7.1]); Thu, 20 Jan 2005 13:50:47 -0100 Message-ID: <41EFC522.6020605@tele2.se> Date: Thu, 20 Jan 2005 13:50:10 -0100 From: Johan Bodin User-Agent: Mozilla Thunderbird 1.0 (Windows/20041206) X-Accept-Language: sv, en-us, en To: rsgb_lf_group@blacksheep.org References: <000001c4fef3$bba4e330$e6a4c593@RD40002> In-Reply-To: <000001c4fef3$bba4e330$e6a4c593@RD40002> Mime-Version: 1.0 X-SPF-Result: relay.thorcom.net: 212.247.154.193 is neither permitted nor denied by domain of tele2.se X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=failed,none Subject: Re: LF: RE: Coil Winding, de VY1JA Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=ISO-8859-1; format=flowed X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Spam-Filtered: by PlusNet SpamCORE (v3.00) J, if you follow Jim's suggestion to wind a solenoidal coil, I would suggest using G4FGQ's program "solnoid3" to estimate inductance and Q. The program is available here: http://www.btinternet.com/~g4fgq.regp/ I have found this program to be quite accurate but the Q estimated by the program is only valid for solid wire. Litz wire will give higher Q, perhaps twice as much (?). 73 Johan SM6LKM -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.7.1 - Release Date: 2005-01-19