Return-Path: Received: (qmail 1724 invoked from network); 24 Aug 2002 20:48:46 -0000 Received: from marstons.services.quay.plus.net (212.159.14.223) by mailstore with SMTP; 24 Aug 2002 20:48:46 -0000 Received: (qmail 26679 invoked by uid 10001); 24 Aug 2002 20:54:04 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from post.thorcom.com (193.82.116.70) by marstons.services.quay.plus.net with SMTP; 24 Aug 2002 20:54:04 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 17ijXr-0008CE-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 24 Aug 2002 23:38:15 +0100 Received: from mailout07.sul.t-online.com ([194.25.134.83]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 17ijXq-0008C9-00 for rsgb_lf_group@blacksheep.org; Sat, 24 Aug 2002 23:38:14 +0100 Received: from fwd03.sul.t-online.de by mailout07.sul.t-online.com with smtp id 17ihnD-0002TA-03; Sat, 24 Aug 2002 22:45:59 +0200 Received: from (0482183881-0001@[62.224.49.183]) by fwd03.sul.t-online.com with smtp id 17ihoa-0XuVweC; Sat, 24 Aug 2002 22:47:24 +0200 From: "jannsen" <0482183881-0001@t-online.de> To: rsgb_lf_group@blacksheep.org References: <002d01c2489a$7118a840$501bebc3@BI57429bankinter> <5.1.0.14.0.20020823144259.00b2f8e0@pb623250.kuleuven.be> Subject: Re: LF: toroid cores X-Mailer: T-Online eMail 2.34 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Date: Sat, 24 Aug 2002 22:47:24 +0200 Message-ID: <17ihoa-0XuVweC@fwd03.sul.t-online.com> X-Sender: 0482183881-0001@t-dialin.net Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Rik Strobbe schrieb: > Hello LF group, > > I am trying to make a list of toroid core material that is suitable for > 136kHz power applications, for impedance transformers and low-pass filters. > I would appreciate any information about the material (brand-type), the > application (transformer or filter) and the power level it was used/tested. > > many thanks in advance, > > 73, Rik ON7YD > > Hi Rik, matching the 136kHz PA output from 3,5 Ohm to coax cable 50 Ohm I use a pack of four Philips RCC36,6/15.6 - 4C 65 (22mm/36mm). the pack is cooled by a separate fan whenever the PA is switched to >400W output. wire: prim 2mm, sec 1,5mm. regards Uwe/dj8wx