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 u31G2xXC012802 for ; Fri, 1 Apr 2016 18:02:59 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1am1SJ-000753-HA for rs_out_1@blacksheep.org; Fri, 01 Apr 2016 16:57:51 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1am1SJ-00074u-2N for rsgb_lf_group@blacksheep.org; Fri, 01 Apr 2016 16:57:51 +0100 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1am1SH-0002dG-J4 for rsgb_lf_group@blacksheep.org; Fri, 01 Apr 2016 16:57:49 +0100 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 B45733273E4 for ; Fri, 1 Apr 2016 16:57:16 +0100 (BST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id 7F37E28A02D9 for ; Fri, 1 Apr 2016 15:57:48 +0000 (UTC) Message-ID: <56FE9A7B.5070709@abelian.org> Date: Fri, 01 Apr 2016 15:57:47 +0000 From: Paul Nicholson User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <56FE7A61.5060307@posteo.de> <8D35A393A973C3F-1838-746092@webmail-vm119.sysops.aol.com> In-Reply-To: <8D35A393A973C3F-1838-746092@webmail-vm119.sysops.aol.com> X-Scan-Signature: bb61bee384896e075004ae5ec954ddd2 Subject: Re: VLF: 8270: now 8269.990Hz 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: 7551 I grabbed a recording from Bielefeld via Wolf's online receiver. Got the correct message at rank 3721 Eb/N0 = -1.6 dB, BER 41.8%, there were no stronger false decodes, so that's a genuine detection at distance 207.6km. df6nm to Bielefeld: 358.7km df6nm to dk7fc: 174.9km dk7fc to Bielefeld: 301.7km I guess dk7fc and df6nm have the best chance of background noise (or some interfering signal) being correlated sufficiently to share a false decode. Running the Todmorden signal through the decoder with list length 12 million and -f9 option (linux version only: outputs all decodes not just the strongest of each phase trial) produces a few thousand false decodes on a full phase search and eventually turns up a GL at rank 11802142 with Eb/N0 -9.6 dB. -- Paul Nicholson --