Return-Path: Received: from mtain-dd04.r1000.mx.aol.com (mtain-dd04.r1000.mx.aol.com [172.29.64.144]) by air-mc03.mail.aol.com (v127_r1.1) with ESMTP id MAILINMC034-a8de4bad47b92a9; Fri, 26 Mar 2010 19:48:09 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dd04.r1000.mx.aol.com (Internet Inbound) with ESMTP id AF526380000A6; Fri, 26 Mar 2010 19:48:07 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NvJEZ-0008F4-Q2 for rs_out_1@blacksheep.org; Fri, 26 Mar 2010 23:46:35 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NvJEZ-0008Ev-Dd for rsgb_lf_group@blacksheep.org; Fri, 26 Mar 2010 23:46:35 +0000 Received: from lnx500.hrz.tu-darmstadt.de ([130.83.156.225]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NvJEX-0001ja-I5 for rsgb_lf_group@blacksheep.org; Fri, 26 Mar 2010 23:46:35 +0000 Received: from FILE-SERVER-HST.hst.e-technik.tu-darmstadt.de (File-Server-HST.hst.e-technik.tu-darmstadt.de [130.83.212.129]) by lnx500.hrz.tu-darmstadt.de (8.14.2/8.14.2/HRZ/PMX) with SMTP id o2QNkVvo027571 for ; Sat, 27 Mar 2010 00:46:31 +0100 (envelope-from schaefer@hst.tu-darmstadt.de) Received: from [127.0.0.1] (helo=File-Server-HST.hst.e-technik.tu-darmstadt.de) by FILE-SERVER-HST.hst.e-technik.tu-darmstadt.de with AVK MailGateway; for ; Sat, 27 Mar 2010 00:46:29 +0100 Content-class: urn:content-classes:message MIME-Version: 1.0 X-MimeOLE: Produced By Microsoft Exchange V6.5 Date: Sat, 27 Mar 2010 00:46:25 +0100 Message-ID: <38A51B74B884D74083D7950AD0DD85E82A1B9C@File-Server-HST.hst.e-technik.tu-darmstadt.de> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: LF: RE: Question about ground impedance at 8.97 KHZ Stefan. Thread-Index: AcrImzXiZZKxEdO4T+OnTXRx1ui3ogEojSKy References: <000001cac47a$f4ba1350$0202a8c0@laptopcore2> <4B9F82C9.3000301@abelian.org> <4B9FB3F5.6030707@iup.uni-heidelberg.de> <4B9FE483.8020806@abelian.org> <006D51ECA524413B84D8C0019B2FE99C@JimPC> <4BA130EC.1040509@abelian.org> <38A51B74B884D74083D7950AD0DD85E82A1B6E@File-Server-HST.hst.e-technik.tu-darmstadt.de> <38A51B74B884D74083D7950AD0DD85E82A1B6F@File-Server-HST.hst.e-technik.tu-darmstadt.de> <7.0.1.0.2.20100318125222.045605b0@vlf.it> <38A51B74B884D74083D7950AD0DD85E82A1B77@File-Server-HST.hst.e-technik.tu-darmstadt.de> <7.0.1.0.2.20100319123829.045d7e70@vlf.it> <38A51B74B884D74083D7950AD0DD85E82A1B7D@File-Server-HST.hst.e-technik.tu-darmstadt.de> <7.0.1.0.2.20100319135419.045d7c80@vlf.it> <38A51B74B884D74083D7950AD0DD85E82A1B7F@File-Server-HST.hst.e-technik.tu-darmstadt.de> <9FB6EC199E55405DBB845075039C5EE1@White> <7.0.1.0.2.20100320223352.03804190@vlf.it> <4945036F9963407A9E065F8CFFCBCBF9@Black> From: =?iso-8859-1?Q?Stefan_Sch=E4fer?= To: X-AVK-Virus-Check: AVB 19.844;26.03.2010 X-PMX-TU: seen v0.99a by 5.5.9.388399, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2010.3.26.233326 X-PMX-SPAMCHECK: outgoing mail X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CACD3E.8BE777A5" Subject: Re: LF: RE: Question about ground impedance at 8.97 KHZ Stefan. X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE 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-aol-global-disposition: G x-aol-sid: 3039ac1d40904bad47b704eb X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) ------_=_NextPart_001_01CACD3E.8BE777A5 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sri, i have to correct that: If taking my 553mH and a Q of 82 one arrives= at R =3D 380 Ohm. I mentioned a R of abt 300 Ohm but this is the DC resis= tance. The difference might be due to the proximity effect and/or some los= sy things in the stray field of the coil during the resonance and Q measur= ement. Maybe Q is higher if i measure it on the hill (when it's placed on= the wooden chairs, dry)... =20 73, Stefan/DK7FC ------_=_NextPart_001_01CACD3E.8BE777A5 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Sri, i have to correct that: If ta= king my 553mH and a Q of  82 one arrives at R =3D 380 Ohm. I mentione= d a R of abt 300 Ohm but this is the DC resistance. The difference might= be due to the proximity effect and/or some lossy things in the stray fiel= d of the coil during the resonance and Q measurement. Maybe Q is higher if= i measure it on the hill (when it's placed on the wooden chairs, dry)...<= /DIV>
 
73, Stefan/DK7FC
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