Return-Path: Received: (qmail 53576 invoked from network); 6 Jan 2004 20:00:03 -0000 Received: from unknown (HELO ptb-mxscan02.plus.net) (212.159.14.236) by ptb-mailstore01.plus.net with SMTP; 6 Jan 2004 20:00:03 -0000 Content-Transfer-Encoding: 8bit Received: (qmail 26587 invoked from network); 6 Jan 2004 20:00:03 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Priority: 3 X-MSMail-Priority: Normal 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 20:00:01 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1AdxMv-0006nK-Ho for dave@picks.force9.co.uk; Tue, 06 Jan 2004 20:00:01 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1AdxMT-0000y3-Kd for rs_out@blacksheep.org; Tue, 06 Jan 2004 19:59:33 +0000 Received: from [64.164.98.8] (helo=mta7.pltn13.pbi.net) by post.thorcom.com with esmtp (Exim 4.14) id 1AdxMN-0000xu-UB for rsgb_lf_group@blacksheep.org; Tue, 06 Jan 2004 19:59:28 +0000 Received: from willow.nutstreet.net (adsl-66-137-58-174.dsl.tulsok.swbell.net [66.137.58.174]) by mta7.pltn13.pbi.net (8.12.10/8.12.10) with ESMTP id i06JxKHp023362 for ; Tue, 6 Jan 2004 11:59:26 -0800 (PST) Received: from willow.nutstreet.net (localhost [127.0.0.1]) by willow.nutstreet.net (8.12.8/8.12.8) with ESMTP id i06JxJHd019248 for ; Tue, 6 Jan 2004 13:59:19 -0600 Received: from localhost (eric@localhost) by willow.nutstreet.net (8.12.8/8.12.8/Submit) with ESMTP id i06JxJmc019244 for ; Tue, 6 Jan 2004 13:59:19 -0600 Date: Tue, 6 Jan 2004 13:59:19 -0600 (CST) From: "Eric KD5UWL" To: "LF_group" In-reply-to: <001401c3d487$504b2000$ee9bfea9@oben> Message-ID: MIME-Version: 1.0 Subject: Re: LF: 300W-TX-G0MRF Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed 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: 1 I don't know if I can help you or not -- but I believe he changed the type to 3C90 as the 85 is very hard to find now. Eric On Tue, 6 Jan 2004, dj9dw wrote: > 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. > > > > >