Return-Path: Received: (qmail 17755 invoked from network); 13 Dec 2002 14:27:26 -0000 Received: from marstons.services.quay.plus.net (212.159.14.223) by mailstore with SMTP; 13 Dec 2002 14:27:26 -0000 Received: (qmail 12698 invoked by uid 10001); 13 Dec 2002 14:27:05 -0000 Received: from post.thorcom.com (193.82.116.70) by marstons.services.quay.plus.net with SMTP; 13 Dec 2002 14:27:04 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.10) id 18Mqld-0008MG-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 13 Dec 2002 14:26:17 +0000 Received: from [194.73.73.147] (helo=einsteinium) by post.thorcom.com with esmtp (Exim 4.10) id 18Mqld-0008M7-00 for rsgb_lf_group@blacksheep.org; Fri, 13 Dec 2002 14:26:17 +0000 Received: from host217-35-12-143.in-addr.btopenworld.com ([217.35.12.143] helo=dellboy) by einsteinium with smtp (Exim 3.22 #16) id 18Mqlc-00027V-00 for rsgb_lf_group@blacksheep.org; Fri, 13 Dec 2002 14:26:16 +0000 Message-ID: <003001c2a2b3$b732ca40$1700a8c0@home> From: "Dave Pick" To: rsgb_lf_group@blacksheep.org References: <2D280BB697C7EE4C979C5C89925418EF368FCE@TNS-FBU-2E-003.corp.telenor.no> Date: Fri, 13 Dec 2002 14:27:07 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4920.2300 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: LF: Re: (Off Topic) PC mains filter for 136kHz interference Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=-0.3 required=5.0tests=QUOTED_EMAIL_TEXT,REFERENCES,SPAM_PHRASE_00_01, USER_AGENT_OEversion=2.42 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Jan-Martin. Try changing one of the video settings such as frame rate of the monitor if your video card allows. It is usually video/monitor that produce stable carriers in the 136 band. Alternatively just switch to a different resolution. Prove it by switching the monitor off and leaving the PC on. Dave G3YXM. > Have a steady tone around 136.5kHz. It is definitely from my PC, > and the level was much reduced when the frame aerial was moved out into the > garden, but still I must switch off the PC when listening on certain > parts of the band. > > Wonder if somebody has any experience in building mains filters for the PC ? > > 73, > Jan_Martin > LA8AK (in JO38XC) tel.: +47-380-87178 (52660) > http://www.laud.no/la6nca/LA8AK/ > >