Return-Path: Received: (qmail 5044 invoked from network); 27 Feb 2005 19:17:33 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore01.plus.net with SMTP; 27 Feb 2005 19:17:33 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1D5TwM-0001Wb-0o for dave@picks.force9.co.uk; Sun, 27 Feb 2005 19:18:55 +0000 Received: from [192.168.67.3] (helo=ptb-mxcore03.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1D5TwL-0001WK-Sn for dave@picks.force9.co.uk; Sun, 27 Feb 2005 19:18:53 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore03.plus.net with esmtp (Exim) id 1D5Twf-0006aD-C4 for dave@picks.force9.co.uk; Sun, 27 Feb 2005 19:19:13 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1D5Tun-0003RU-To for rs_out_1@blacksheep.org; Sun, 27 Feb 2005 19:17:17 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1D5Tul-0003PY-0a for rsgb_lf_group@blacksheep.org; Sun, 27 Feb 2005 19:17:15 +0000 Received: from imo-d21.mx.aol.com ([205.188.144.207]) by relay.thorcom.net with esmtp (Exim 4.43) id 1D5Tuh-0001dZ-H8 for rsgb_lf_group@blacksheep.org; Sun, 27 Feb 2005 19:17:14 +0000 Received: from MarkusVester@aol.com by imo-d21.mx.aol.com (mail_out_v37_r3.8.) id l.12d.57042168 (14374) for ; Sun, 27 Feb 2005 14:17:00 -0500 (EST) From: MarkusVester@aol.com Message-ID: <12d.57042168.2f53769a@aol.com> Date: Sun, 27 Feb 2005 14:16:42 EST To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Mailer: 8.0 for Windows sub 6104 X-SPF-Result: relay.thorcom.net: domain of aol.com designates 205.188.144.207 as permitted sender X-Spam-Score: 0.7 (/) X-Spam-Report: autolearn=no,HTML_20_30=0.504,HTML_MESSAGE=0.001,NO_REAL_NAME=0.178 Subject: Re: LF: Lavender Grabber Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.7 required=5.0 tests=HTML_MESSAGE, HTML_TAG_BALANCE_HTML,NO_REAL_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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Content-transfer-encoding: 8bit Dear John,

funny thing... after some fiddling I figured that the PC's audio subsystem had apparently lost a single sample in a stereo pair, to the effect of exchanging left and right channels. Consequently, azimuth directions and phase corrections were reversed, and brightness proportional to the turnstile loops' signal instead of the E-field. An ugly but typical example how the SNR on these loops is gradually getting worse and worse, with the ever increasing number of switchmode power supplies in the nearby neighbourhood. In the end I had to use the usual fix (ie. restart Windows) - you can't turn your back on these machines, not even for a couple of minutes ;-).

Many thanks for the report, it's good to know that someone is watching out there...

73 de Markus, DF6NM

w1tag@w1tag.com, 27.02.2005, 17:46:01 UT:

I don't know how long this will last, but if you want to see how lovely the
LF noise can be in Germany, check out Markus' screen grabber:
http://members.aol.com/DF6NM/Grabber.htm

John A.