Return-Path: Received: from mtain-de06.r1000.mx.aol.com (mtain-de06.r1000.mx.aol.com [172.29.64.206]) by air-db08.mail.aol.com (v129.4) with ESMTP id MAILINDB082-86224c5557ca9f; Sun, 01 Aug 2010 07:17:30 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-de06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 73D31380000A8; Sun, 1 Aug 2010 07:17:29 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OfWWf-0000d7-6r for rs_out_1@blacksheep.org; Sun, 01 Aug 2010 12:16:17 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OfWWd-0000al-RV for rsgb_lf_group@blacksheep.org; Sun, 01 Aug 2010 12:16:15 +0100 Received: from out1.ip03ir2.opaltelecom.net ([62.24.128.239]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OfWWc-0006QI-MS for rsgb_lf_group@blacksheep.org; Sun, 01 Aug 2010 12:16:15 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AncFAE70VExOk8/A/2dsb2JhbACHWpg8cb0RhTkEi08 X-IronPort-AV: E=Sophos;i="4.55,297,1278284400"; d="scan'208";a="313679223" Received: from unknown (HELO xphd97xgq27nyf) ([78.147.207.192]) by out1.ip03ir2.opaltelecom.net with SMTP; 01 Aug 2010 12:16:07 +0100 Message-ID: <004101cb316a$ee628700$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <002b01cb315f$0bc5d600$0401a8c0@xphd97xgq27nyf> <6EED9D0C6BDA4E66AF4546D4F6973F46@JimPC> Date: Sun, 1 Aug 2010 12:16:04 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Re: Re: trace 6.50 kcs Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 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-aol-global-disposition: G x-aol-sid: 3039ac1d40ce4c5557c95d67 X-AOL-IP: 193.82.116.20 That trace has now gone, leaving a nice clear spectrum here, no 50hz lines here, some QRN about. I should see the signal, maybe he will try 8.97 kcs with better results. tnx de mal/g3kev ----- Original Message ----- From: "James Moritz" To: Sent: Sunday, August 01, 2010 11:49 AM Subject: LF: Re: trace 6.50 kcs > Dear Mal, LF Group, > > That kind of drifting spectral line is typical of local mains-related noise > in this frequency range. Stefan's synthesiser would not drift more than a > few milli-hertz in the timescale of your screen shot. > > Cheers, Jim Moritz > 73 de M0BMU > >