Delivered-To: daveyxm@virginmedia.com Received: by 10.50.237.98 with SMTP id vb2csp6022igc; Sun, 2 Mar 2014 11:44:45 -0800 (PST) X-Received: by 10.194.24.35 with SMTP id r3mr12476wjf.68.1393789484907; Sun, 02 Mar 2014 11:44:44 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com. [195.171.43.25]) by mx.google.com with ESMTP id wp2si6747807wjc.153.2014.03.02.11.44.44 for ; Sun, 02 Mar 2014 11:44:44 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WKBij-0001Ln-59 for rs_out_1@blacksheep.org; Sun, 02 Mar 2014 19:06:41 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WKBii-0001Le-M1 for rsgb_lf_group@blacksheep.org; Sun, 02 Mar 2014 19:06:40 +0000 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.82) (envelope-from ) id 1WKBig-00086W-SW for rsgb_lf_group@blacksheep.org; Sun, 02 Mar 2014 19:06:39 +0000 Received: from sb.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id BF2013273E8 for ; Sun, 2 Mar 2014 19:05:17 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id 034DD28A0184 for ; Sun, 2 Mar 2014 19:06:37 +0000 (UTC) Message-ID: <5313813D.4000702@abelian.org> Date: Sun, 02 Mar 2014 19:06:37 +0000 From: Paul Nicholson User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130106 Thunderbird/17.0.2 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: , ,<5313677A.2020400@abelian.org> <91EDCA349BE942929730C480D5D64F7F@White> In-Reply-To: <91EDCA349BE942929730C480D5D64F7F@White> X-Spam-Score: 0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: > I will be running in QRSS 180 tonight. Good luck. After last night's test maybe a few more receivers will be listening on 29499 Hz. I'm sure this signal will go a lot further than UK. It counts as a strong signal here and there is 10 or 20dB or more (depending on rx bandwidth) in hand to reach further into Europe. [...] Content analysis details: (0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [217.72.171.49 listed in list.dnswl.org] 0.7 SPF_NEUTRAL SPF: sender does not match SPF record (neutral) X-Scan-Signature: b77892ad90d0261eaf071f4f6cf31464 Subject: Re: LF: Would slower QRSS help? Content-Type: text/plain; charset=ISO-8859-1; format=flowed 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=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS 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 > I will be running in QRSS 180 tonight. Good luck. After last night's test maybe a few more receivers will be listening on 29499 Hz. I'm sure this signal will go a lot further than UK. It counts as a strong signal here and there is 10 or 20dB or more (depending on rx bandwidth) in hand to reach further into Europe. More plots: a graph of signal level and phase, 10 minute averages stepping 5 minutes. http://abelian.org/vlf/tmp/29499_140302k.gif The background noise is plotted after sferic blanking. On the spectrogram it looks like the noise tails off more sharply between 04:00 and 04:30 but when I actually plot the noise it's a quite smooth decline. But the signal is gradually coming up hence the appearance of a 'window' in the 2 or 3 hours before dawn. For comparison, NAA at 24kHz during the same period http://abelian.org/vlf/tmp/29499_140302m.gif Some pronounced dips during the night at 29499 Hz don't appear in the NAA record. -- Paul Nicholson --