Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mg02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4593638000121; Thu, 14 Feb 2013 19:33:24 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1U69DS-00082m-DH for rs_out_1@blacksheep.org; Fri, 15 Feb 2013 00:31:50 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1U69DR-00082d-W5 for rsgb_lf_group@blacksheep.org; Fri, 15 Feb 2013 00:31:49 +0000 Received: from mail-ie0-f173.google.com ([209.85.223.173]) by relay1.thorcom.net with esmtps (TLSv1:RC4-SHA:128) (Exim 4.77) (envelope-from ) id 1U69DQ-0000Wl-9e for rsgb_lf_group@blacksheep.org; Fri, 15 Feb 2013 00:31:48 +0000 Received: by mail-ie0-f173.google.com with SMTP id 9so4131635iec.4 for ; Thu, 14 Feb 2013 16:31:24 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:date:message-id:subject:from:to :content-type; bh=VB9zRg39MTtgZS3aAAYpcqtq1CiTgEg3yb4semJHsO0=; b=hpAA20Zj91kIlVTmVoyfqZ3piP++5C34IYurYrEYRY1uNU6xWetz83R5h19EyytUj8 1FiRHg85Ajt1+/Bj+HdVmTwuychucSqPRL4gs/kc4DhqQQ0Y4NQwpSCfZgCDkq+6YccK QPZFwn3UIZsptiLo16i3VpfA1BG5hN+Cy/rYQis9UEsWvnq2vbwC1DeQujW7VBj25Thb 8dNb6V7xL4Nfo+xV1ts0sc56TMbzGh/8Yp8Roco7947kvcL8su6Xyxww2yc/2TzWdzgn IyOxYj80KZFlZxGPUMLQ6srYjouqyhG2Yib0nPkCYVQJeYuMWf0O6a3GfLEizNZM17ka Bk1A== MIME-Version: 1.0 X-Received: by 10.50.108.235 with SMTP id hn11mr376954igb.107.1360888284382; Thu, 14 Feb 2013 16:31:24 -0800 (PST) Received: by 10.50.28.47 with HTTP; Thu, 14 Feb 2013 16:31:24 -0800 (PST) Date: Fri, 15 Feb 2013 11:31:24 +1100 Message-ID: From: Dimitrios Tsifakis To: rsgb_lf_group@blacksheep.org X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hello group, I would like to increase the Q of my loading coil for 475 kHz. . It consists currently of a 20-litre plastic bucket with standard house 240V electrical wire (with PVC jacket). I measured the Q and found it to be about 220 (XL is about 2 kohm). I do have some Litz wire I can use. I also have a piece of large diameter (25 cm) storm water pipe, which I think is made of PVC. Would you recommend using a PVC former or should I look for a more exotic material (glass/porcelain)? Would you think the inter-turn capacitance is very detrimental and some exotic winding technique would yield better results? [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.223.173 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (dtsifakis[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 59677119386dcf9f1872cb454dc1331d Subject: LF: how to increase the Q of my loading coil? Content-Type: text/plain; charset=ISO-8859-1 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: 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-aol-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mtain-mg02.r1000.mx.aol.com ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d60ca511d825415fc X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hello group, I would like to increase the Q of my loading coil for 475 kHz. . It consists currently of a 20-litre plastic bucket with standard house 240V electrical wire (with PVC jacket). I measured the Q and found it to be about 220 (XL is about 2 kohm). I do have some Litz wire I can use. I also have a piece of large diameter (25 cm) storm water pipe, which I think is made of PVC. Would you recommend using a PVC former or should I look for a more exotic material (glass/porcelain)? Would you think the inter-turn capacitance is very detrimental and some exotic winding technique would yield better results? I understand that ground losses are bigger in my case than the inductor losses, but I would like to address the inductor first. 73, Dimitris VK1SV