Return-Path: Received: (qmail 51240 invoked from network); 12 Jan 2004 08:54:16 -0000 Received: from unknown (HELO ptb-mxscan02.plus.net) (212.159.14.236) by ptb-mailstore02.plus.net with SMTP; 12 Jan 2004 08:54:16 -0000 Received: (qmail 11526 invoked from network); 12 Jan 2004 08:54:15 -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; 12 Jan 2004 08:54:14 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1Afxpu-0002t4-RW for dave@picks.force9.co.uk; Mon, 12 Jan 2004 08:54:14 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Afxpc-0002GA-DM for rs_out@blacksheep.org; Mon, 12 Jan 2004 08:53:56 +0000 Received: from [194.247.47.231] (helo=mailout.zetnet.co.uk) by post.thorcom.com with esmtp (Exim 4.14) id 1Afxpc-0002G1-0C for rsgb_lf_group@blacksheep.org; Mon, 12 Jan 2004 08:53:56 +0000 Received: from irwell.zetnet.co.uk ([194.247.47.48] helo=zetnet.co.uk) by mailout.zetnet.co.uk with esmtp (Exim 3.36 #1 (Debian)) id 1Afxpa-0004zz-00 for ; Mon, 12 Jan 2004 08:53:54 +0000 X-Fake-Domain: johnb5a82ea1a4 Received: from johnb5a82ea1a4 (bts-0977.dialup.zetnet.co.uk [194.247.51.209]) by zetnet.co.uk (8.12.3/8.12.3/Debian-6.6.zet1) with ESMTP id i0C8rqQ7010321 for ; Mon, 12 Jan 2004 08:53:53 GMT X-Bad-Message-ID: no DNS (johnb5a82ea1a4) Message-ID: <006001c3d8e9$9b48b980$d133f7c2@johnb5a82ea1a4> From: "John Rabson" To: rsgb_lf_group@blacksheep.org References: <5047BBB4.205C80C5.0000CE2C@aol.com> <001301c3d88e$844a66d0$ee9bfea9@oben> Date: Mon, 12 Jan 2004 08:45:14 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: Re: LF: T2-ringing Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit 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 ----- Original Message ----- From: "dj9dw" > [...] I even thought of the PSU, which is stabilized by 5 > times 3055. Is that cazy? No. If you get inexplicable behaviour in a piece of electronics and none of the obvious things cure it, check the purity of the DC supply rails. This I learned many years ago when working for STC on stabilised power supplies. 73 John Rabson G3PAI