Return-Path: Received: from mtain-di06.r1000.mx.aol.com (mtain-di06.r1000.mx.aol.com [172.29.64.10]) by air-dd02.mail.aol.com (v129.4) with ESMTP id MAILINDD021-86084d7ac3d8ae; Fri, 11 Mar 2011 19:52:40 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-di06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 844C738000086; Fri, 11 Mar 2011 19:52:39 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PyD3A-0005qL-Hg for rs_out_1@blacksheep.org; Sat, 12 Mar 2011 00:51:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PyD39-0005qC-U9 for rsgb_lf_group@blacksheep.org; Sat, 12 Mar 2011 00:51:19 +0000 Received: from nm9.bullet.mail.ird.yahoo.com ([77.238.189.35]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1PyD38-0003Wm-5Y for rsgb_lf_group@blacksheep.org; Sat, 12 Mar 2011 00:51:19 +0000 Received: from [77.238.189.55] by nm9.bullet.mail.ird.yahoo.com with NNFMP; 12 Mar 2011 00:51:12 -0000 Received: from [212.82.108.112] by tm8.bullet.mail.ird.yahoo.com with NNFMP; 12 Mar 2011 00:51:12 -0000 Received: from [127.0.0.1] by omp1021.mail.ird.yahoo.com with NNFMP; 12 Mar 2011 00:51:12 -0000 X-Yahoo-Newman-Id: 235913.67760.bm@omp1021.mail.ird.yahoo.com Received: (qmail 37757 invoked from network); 12 Mar 2011 00:51:12 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btopenworld.com; h=DKIM-Signature:Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=SssIerg41BXpCK7x+9EU4SghD8VLbm/Uqy4N1qhbuOVY1j8BVKgkvWjychpSZPHhxJqlRXolgqMRSpDYzRQ0NAxNq95d63Q2/QatmwZHd5SDdVuUfWKbGQBXCP8rKVN452qH+X3/BZbh8oO8tYhyFGRsTTERaDCbQ1v9QyvAdKk= ; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btopenworld.com; s=s1024; t=1299891072; bh=19pHAjynQZe4qGHRcjyrsM5TyElG5rqSFedmXilHBzc=; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=tmh4pNplbynrBwWRHIlyKv3xzj/FCrs/7YO4XKmqHmAKneUJ1YtsqbibYBSSeztkJiP4tKFtGF/cc1s5o+9p1wkDzlsHgn5HpeziXxjEcKeKcqv2vcAH66pnHFYRP4gubu0d6hn3WgqXiwtfofgjzl1ZtpFZQFILCbqEQO1CPyg= Received: from JimPC (james.moritz@86.176.86.80 with login) by smtp817.mail.ird.yahoo.com with SMTP; 12 Mar 2011 00:51:11 +0000 GMT X-Yahoo-SMTP: Cxhli3eswBD1ozmtAojhjrja86kWx0Qm9tycD5QR1DKWrOLgjJcXkw-- X-YMail-OSG: Rq5xUFMVM1mAL4L1MJsCvb.9ALVAlB6aV2iW_0OuhkpNNBu .OYamnX.J9J_LlUD0YudjSgzTSFOwwSBSSD9ilArdqyu2MvlnChO7xcn7oBS oLlk1jNoO15HxQ4tVjEwTrVXocR827JflLwzdOoMwpkksyyAsHUP686_gRVX Pm04C2E4DX.Hk9kfhSzHGGlgkxvYCF3JQEEgnySJVOWBgODnAPg4gJeqSN6O 0XqUQkL8d4eK5gxsoGhkUqD.9F6133Nw5IP.P X-Yahoo-Newman-Property: ymail-3 Message-ID: <46829E04645940D4A51EB04524B6C7D7@JimPC> From: "James Moritz" To: References: <003201cbde72$606d6090$0401a8c0@xphd97xgq27nyf><543492.45357.qm@web28102.mail.ukl.yahoo.com><998C9385-2AEE-4C44-91FE-86FE85F09BA9@gmail.com><6F4ACB3DA2BB4E338E9278EEDE300D20@JimPC><4D791085.6000304@freenet.de> <88166509D1CC44BD89560D815F2A8BBA@JimPC> In-Reply-To: <88166509D1CC44BD89560D815F2A8BBA@JimPC> Date: Sat, 12 Mar 2011 00:51:13 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18263 DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,UNPARSEABLE_RELAY=0.001 Subject: LF: Re: VLF Stability and soundcard locking Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response 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-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d280.1 ; domain : btopenworld.com DKIM : fail x-aol-sid: 3039ac1d400a4d7ac3d71a07 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dear Andy, Wolf, LF Group, Over last night and today I did some further tests with my cheapo USB sound card and calibration source, but this time using a different laptop PC. Result - after some fiddling, sample rate error indicated by SpecLab matches measured error of clock crystal frequency, and a nice glitch-free spectral line with 180uHz FFT resolution. So the erratic measured sample rate would seem to be more specific-PC-related than sound card related. I also got glitch-free results using the internal sound card of the desktop machine I tried the USB sound card with previously, which I guess would at least suggest the cause of the problem is not within SpecLab. This means I can now plausibly receive signals from the very long duration, low ERP tests going on, so hopefully I will be able to give that a try this weekend. Cheers, Jim Moritz 73 de M0BMU