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 u31BiNxr012135 for ; Fri, 1 Apr 2016 13:44:23 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1alxR3-0005UB-SS for rs_out_1@blacksheep.org; Fri, 01 Apr 2016 12:40:17 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1alxR3-0005U2-AN for rsgb_lf_group@blacksheep.org; Fri, 01 Apr 2016 12:40:17 +0100 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1alxR1-0001aX-R4 for rsgb_lf_group@blacksheep.org; Fri, 01 Apr 2016 12:40:16 +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 49C033273E4 for ; Fri, 1 Apr 2016 12:39:43 +0100 (BST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id D271128A0031 for ; Fri, 1 Apr 2016 11:40:14 +0000 (UTC) Message-ID: <56FE5E1E.8060908@abelian.org> Date: Fri, 01 Apr 2016 11:40:14 +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: <8D3536BE46722BE-17E4-698850@webmail-vm014.sysops.aol.com> <56F31ED2.4070205@posteo.de> <56F79ECB.7070501@mbsks.franken.de> <56F7DED5.1050204@mbsks.franken.de> <56F82A0B.2010002@abelian.org> <2D7908E03091413A820A246935576A96@White> <56F94472.3040606@abelian.org> <56F97A0A.8070103@mbsks.franken.de> <56F98D30.8050205@abelian.org> In-Reply-To: <56F98D30.8050205@abelian.org> X-Scan-Signature: 0b2d339ae1d48966556dfb6ad64e2bce Subject: Re: VLF: 8270 March 26/27 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: 7540 I ran about four hours of Roland's 8270Hz carrier into the EbNaut decoder and got ** with 38 second symbols at Eb/N0 = +1.5 dB with phase pattern 90 90 60 60 - quite an easy decode. It even decoded *** with 35 second symbols at Eb/N0 = -2.3 dB, a genuine decode because there was no false decode with higher path metric. Phase was 120 90 90 60. Those phase patterns say the frequency was a smidgen low, perhaps due to Doppler. So, EbNaut messages possible using 1uW over 1Mm exploiting a two electron signal. -- Paul Nicholson --