Return-Path: Received: (qmail 41286 invoked from network); 6 Jan 2004 19:01:34 -0000 Received: from unknown (HELO ptb-mxscan02.plus.net) (212.159.14.236) by ptb-mailstore02.plus.net with SMTP; 6 Jan 2004 19:01:34 -0000 Received: (qmail 40968 invoked from network); 6 Jan 2004 19:01:34 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore02.plus.net (212.159.14.216) by ptb-mxscan02.plus.net with SMTP; 6 Jan 2004 19:01:33 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1AdwSL-000AXk-Hg for dave@picks.force9.co.uk; Tue, 06 Jan 2004 19:01:33 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1AdwRu-0008R1-2u for rs_out@blacksheep.org; Tue, 06 Jan 2004 19:01:06 +0000 Received: from [194.25.134.81] (helo=mailout03.sul.t-online.com) by post.thorcom.com with esmtp (Exim 4.14) id 1AdwRr-0008Qs-GK for rsgb_lf_group@blacksheep.org; Tue, 06 Jan 2004 19:01:03 +0000 X-Fake-Domain: fwd09.aul.t-online.de Received: from fwd09.aul.t-online.de by mailout03.sul.t-online.com with smtp id 1AdwRq-0007Tt-01; Tue, 06 Jan 2004 20:01:02 +0100 X-Fake-Domain: oben Received: from oben (bdFf2MZbrelY2VHNrifNUGuqXYvcjVeD744bXcv-MPWB2Ad52fbEZe@[80.128.185.117]) by fwd09.sul.t-online.com with smtp id 1AdwR3-1x51Ae0; Tue, 6 Jan 2004 20:00:13 +0100 X-Bad-Message-ID: no DNS (oben) Message-ID: <001401c3d487$504b2000$ee9bfea9@oben> From: "dj9dw" To: "LF_group" Date: Tue, 6 Jan 2004 20:00:12 +0100 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2720.3000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Seen: false X-ID: bdFf2MZbrelY2VHNrifNUGuqXYvcjVeD744bXcv-MPWB2Ad52fbEZe Subject: LF: 300W-TX-G0MRF X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-PN-SPAMFiltered: yes X-Spam-Rating: 2 Content-type: text/plain; charset=windows-1252; format=flowed MIME-Version: 1.0 Content-transfer-encoding: 8bit Hello group, as I can't get in contact with David, G0MRF, I want to spread out my problem here. The TX works fine except the outputtransformer T2. There is heavy ringing at abt 1 MHz. Now I figured, the inductance seems to be abt 300uH from drain to drain. That shure is far too much. Could it be that David has changed the toroid - type to one with higher u so that 10 turns primary has to be reduced? Your help is very welcom, I am stuck. Regards, dj9dw, Peter.