Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_MED,SPF_PASS, T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v4PBU8Q7009213 for ; Thu, 25 May 2017 13:30:10 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dDqt1-0006Na-Rg for rs_out_1@blacksheep.org; Thu, 25 May 2017 12:24:59 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dDqt1-0006NR-94 for rsgb_lf_group@blacksheep.org; Thu, 25 May 2017 12:24:59 +0100 Received: from mail-wm0-x22c.google.com ([2a00:1450:400c:c09::22c]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dDqsw-0007II-Of for rsgb_lf_group@blacksheep.org; Thu, 25 May 2017 12:24:58 +0100 Received: by mail-wm0-x22c.google.com with SMTP id e127so100086534wmg.1 for ; Thu, 25 May 2017 04:24:54 -0700 (PDT) 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=20161025; h=from:date:message-id:to:subject:in-reply-to:references:mime-version :content-transfer-encoding; bh=EidYeJ8bMD2Z+4/+T7kwN02hnoUk7zdVAj7MXDHPbkk=; b=EW4h7QrylXt/M+jKkSUW7zfr3o2ap2z3BzBlHEq1qOrHEVOcfzRT++qQSPBvxd8Gpl 2cgmVudaskkb7rS9CA4KfpNv7KVoyL0jcKHbyDKP/IcoxdXTWFmxORFmSfm5ZXNO0d+M k57NiggTYTuPF3vNKFmLPdNXlx4o/Gb3i4MAOrslP7oBbbOShz/9DNsFsK8z30Lk7m9A uDd2CSXE4N2qB7eZQyN+sXDIerT5TbSFN6xEpw6MJs3gFf+xaiTwC6fRAFGFV+mFvihZ 4Et5+BuQ4CvCCYQyqTFQCEungw/ELZzI/zx7WSpBI/2z9Gxv9VxltTH+0REwjd0Z//gl fjWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:message-id:to:subject:in-reply-to :references:mime-version:content-transfer-encoding; bh=EidYeJ8bMD2Z+4/+T7kwN02hnoUk7zdVAj7MXDHPbkk=; b=X7GCVlWK1lXcPIUkvLeQchCVykhjrnD+/05OEda4q3pU2CsmTrNCiUMuZHuKLoroOX hmRdic+cR1pZoaRAchYhKn611xqBS4fR3/i6wNSgB8kDeKfQpQaG+S2vDlCmP7QL3TIM ixTIaJ6RWkbYT9V0d2pfWjUxZdaZfJHjlAR2CKvyEtw26ZdCr2Ks+Pf5bvMD590H7pA0 Dr7+/4fARnGKd61vUDlrhtZBjcJc4PCLRxLOTqyl8Dj2p/7ziapMX/5a5FMI0SDwO6VI 353WR8Dw5ru7uzstF6tnwzfEmncEBuxG/bB3msIRGpIUOAeIS87ZIQw3g4fykw6xQn0j phlw== X-Gm-Message-State: AODbwcDZGLWz5JqnIVXG919rLyk1jDaaBsCB0+5pjVitqr9dnFUZ492G w9woSMXn2+mhEenJ X-Received: by 10.223.145.75 with SMTP id j69mr22291308wrj.23.1495711492674; Thu, 25 May 2017 04:24:52 -0700 (PDT) Received: from OfficeWin7.lan (82-70-254-222.dsl.in-addr.zen.co.uk. [82.70.254.222]) by smtp.gmail.com with ESMTPSA id c17sm6694809wre.35.2017.05.25.04.24.51 for (version=TLS1 cipher=AES128-SHA bits=128/128); Thu, 25 May 2017 04:24:52 -0700 (PDT) From: Chris Wilson X-Google-Original-From: Chris Wilson Date: Thu, 25 May 2017 12:24:51 +0100 X-Priority: 3 (Normal) Message-ID: <1214966465.20170525122451@gmail.com> To: Clemens Paul In-Reply-To: <4F1550D1E41F4437969FE559D083515C@Clemens0811> References: <1456380282.20170524154713@gmail.com> <5925A16B.7050100@posteo.de> <4F1550D1E41F4437969FE559D083515C@Clemens0811> MIME-Version: 1.0 X-Scan-Signature: a6b6ffaf48fdddf1ed5c25dc4bf03ee1 Subject: Re: LF: Iron dust toroids and heating Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit 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-Scanned-By: MIMEDefang 2.75 Status: O X-Status: X-Keywords: X-UID: 11758 Hello Clemens, So in simple terms, does this mean that it is to be expected that the G3YXM LPF will NOT work correctly on the W1VD amp? If so, again in simple terms please ;) , why? http://www.wireless.org.uk/136rig.htm (The "Base Staion" version. Thanks Clemens! Thursday, May 25, 2017, 11:35:52 AM, you wrote: > Hi Stefan, >>115 uH appears to be very much for 137 kHz. Not sure what type >>of filter you are using > Chris has provided this link several times > http://www.w1vd.com/LPF.pdf > You can contemplate this filter as two 3-pole T-type low pass filters in series. > Then every element has 50 Ohm reactance,one half of the inner coil L2 belongs > to the first and one half belongs to the second part,hence +j100Ohm in sum. > 73 > Clemens > DL4RAJ -- Best regards, Chris mailto:dead_fets@gmail.com