Return-Path: X-Spam-DCC: paranoid 1290; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,RATWARE_GECKO_BUILD,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u1SGNbRb003346 for ; Sun, 28 Feb 2016 17:23:37 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aa434-0002AD-L6 for rs_out_1@blacksheep.org; Sun, 28 Feb 2016 16:18:22 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aa434-0002A4-CV for rsgb_lf_group@blacksheep.org; Sun, 28 Feb 2016 16:18:22 +0000 Received: from brian.netcom.co.uk ([217.72.171.64]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1aa411-0007XB-8y for rsgb_lf_group@blacksheep.org; Sun, 28 Feb 2016 16:18:21 +0000 Received: from sb.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by brian.netcom.co.uk (Postfix) with ESMTP id 7FB9432008A for ; Sun, 28 Feb 2016 15:53:18 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id A06D828A01ED for ; Sun, 28 Feb 2016 16:15:42 +0000 (UTC) Message-ID: <56D31D2E.6060302@abelian.org> Date: Sun, 28 Feb 2016 16:15:42 +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: <8D34021D110227C-1C54-6EA470@webmail-vm008.sysops.aol.com> <8D3404957FA6EB0-15A0-5F7E24@webmail-vd012.sysops.aol.com> In-Reply-To: <8D3404957FA6EB0-15A0-5F7E24@webmail-vd012.sysops.aol.com> X-Scan-Signature: 046f068074e745d5c60ca47deee9b503 Subject: Re: VLF: EbNaut 8270.1, Sunday Feb 28 (carrier) Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7083 I pulled the data out of the working directory of fbins from to flux b180 phdiff 2016-02-28_09:30 2016-02-28_10:30 0.08 99.2 114.9 2016-02-28_09:45 2016-02-28_10:45 0.08 109.9 134.3 2016-02-28_10:00 2016-02-28_11:00 0.09 124.8 138.3 2016-02-28_10:15 2016-02-28_11:15 0.08 142.8 138.5 2016-02-28_10:30 2016-02-28_11:30 0.10 125.3 125.6 2016-02-28_10:45 2016-02-28_11:45 0.07 115.4 108.2 2016-02-28_11:00 2016-02-28_12:00 0.06 74.5 65.1 2016-02-28_11:15 2016-02-28_12:15 0.04 73.1 51.9 Flux density is fT, b180 the apparent bearing, and phdiff is the phase angle between the E/W and N/S loops which gives an idea of the polarisation distortion. For signals in the South- East compass quadrant the phdiff should nominally be 180 the way my loops are wired. The above wouldn't show up any phase glitches on the signal because only the loop phase difference goes into the goniometry calculation. Below is the absolute phase lead in 1 hour averages captured along bearing 120. from phase 2016-02-28_09:30 -73.9 2016-02-28_09:45 -37.4 2016-02-28_10:00 -22.4 2016-02-28_10:15 -14.8 2016-02-28_10:30 -30.8 2016-02-28_10:45 -32.0 2016-02-28_11:00 -59.0 That looks pretty steady, no problem for a 3 hour coherent BPSK message. -- Paul Nicholson --