Delivered-To: daveyxm@virginmedia.com Received: by 10.50.237.98 with SMTP id vb2csp73456igc; Fri, 7 Mar 2014 15:06:50 -0800 (PST) X-Received: by 10.180.13.197 with SMTP id j5mr641009wic.14.1394233609982; Fri, 07 Mar 2014 15:06:49 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com. [195.171.43.25]) by mx.google.com with ESMTP id de5si11391301wjb.77.2014.03.07.15.06.49 for ; Fri, 07 Mar 2014 15:06:49 -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 1WM3NK-0000sD-Bw for rs_out_1@blacksheep.org; Fri, 07 Mar 2014 22:36:18 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WM3NJ-0000s3-Vl for rsgb_lf_group@blacksheep.org; Fri, 07 Mar 2014 22:36:17 +0000 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.82) (envelope-from ) id 1WM3NI-0002el-Gx for rsgb_lf_group@blacksheep.org; Fri, 07 Mar 2014 22:36:16 +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 D7184327413 for ; Fri, 7 Mar 2014 22:34:48 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id DC71728A0AA0 for ; Fri, 7 Mar 2014 22:36:15 +0000 (UTC) Message-ID: <531A49DF.8030906@abelian.org> Date: Fri, 07 Mar 2014 22:36:15 +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: <2662DF5AA7FA416CBB09CDB90BBFF7B1@White> <016101cf39df$4f4c89a0$ede59ce0$@comcast.net>, <01dc01cf3a3f$86997bb0$93cc7310$@comcast.net>, <2FC5CAB271A6437CB35A5B100185CEDA@White> <025101cf3a52$e0925750$a1b705f0$@comcast.net> In-Reply-To: <025101cf3a52$e0925750$a1b705f0$@comcast.net> 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: Jim wrote: > I wonder if LWPC would show the interference peak near 1500 UT; Last time I ran it http://abelian.org/vlf/tmp/lwpc140301a.gif [...] 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: 2e2f7cbbe9f38dd7bf3fac4fc012e6fc Subject: Re: LF: New OPERA OP/OPDS 2H tonight on 27.945 Dial Freq... 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 Jim wrote: > I wonder if LWPC would show the interference peak near 1500 UT; Last time I ran it http://abelian.org/vlf/tmp/lwpc140301a.gif the model did not converge from about 11:00 to 16:30 UT but perhaps I can tweak things a bit. When the entire path is in darkness, LWPC produces a flat line, indicating it is using a constant model for the nighttime ionosphere. During day, it takes account of solar zenith angle for each path segment of the model. We have some control over the path segmentation - maybe that can be exploited to make it converge. The online front-end is at http://abelian.org/lwpc -- Paul Nicholson --