Return-Path: Received: from rly-dd08.mx.aol.com (rly-dd08.mail.aol.com [172.19.141.155]) by air-dd03.mail.aol.com (v121.4) with ESMTP id MAILINDD031-b9047d13bcb5c; Fri, 07 Mar 2008 07:58:07 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-dd08.mx.aol.com (v121.4) with ESMTP id MAILRELAYINDD082-b9047d13bcb5c; Fri, 07 Mar 2008 07:57:49 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1JXc4G-0004m3-6l for rs_out_1@blacksheep.org; Fri, 07 Mar 2008 12:52:56 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1JXc4F-0004lu-RI for rsgb_lf_group@blacksheep.org; Fri, 07 Mar 2008 12:52:55 +0000 Received: from imo-m22.mx.aol.com ([64.12.137.3] helo=imo-m22.mail.aol.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1JXc49-0005W8-0T for rsgb_lf_group@blacksheep.org; Fri, 07 Mar 2008 12:52:55 +0000 Received: from MarkusVester@aol.com by imo-m22.mx.aol.com (mail_out_v38_r9.3.) id l.d68.239f674c (37104) for ; Fri, 7 Mar 2008 07:52:05 -0500 (EST) Received: from Amilo3205 (e179216184.adsl.alicedsl.de [85.179.216.184]) by cia-db08.mx.aol.com (v121.4) with ESMTP id MAILCIADB082-90f047d13a73115; Fri, 07 Mar 2008 07:52:04 -0500 Message-ID: From: "Markus Vester" To: References: <000901c87ef9$2cd34960$08a3fea9@edgar1ew1re1zt> <47D1150A.6090407@ukonline.co.uk> <000701c88045$c681e740$0301a8c0@g3kev> In-Reply-To: <000701c88045$c681e740$0301a8c0@g3kev> Date: Fri, 7 Mar 2008 13:51:59 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6000.16480 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16545 X-Spam-Flag: NO X-Karma: 0: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: SMPS noise cancelling software Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original 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=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : + Dear LF, as our LF and MF receiving is often plaguesd by intense hash from various switch mode power supplies, I have tried to work towards a software noise canceller, using estimation and subtraction. A short description of the technique, along with free experimental software and sourcecode, can be found on http://members.aol.com/df6nm2/smps_nc/NC3F4.zip (63 kB). Hope you may find it useful... Kind regards Markus, DF6NM