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 u4DB8cdT024249 for ; Fri, 13 May 2016 13:08:38 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1b1AtW-0001Ot-Ja for rs_out_1@blacksheep.org; Fri, 13 May 2016 12:04:34 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1b1AtW-0001Ok-4O for rsgb_lf_group@blacksheep.org; Fri, 13 May 2016 12:04:34 +0100 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1b1AtU-0003dc-K4 for rsgb_lf_group@blacksheep.org; Fri, 13 May 2016 12:04:32 +0100 Received: from pn.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id 438083273E5 for ; Fri, 13 May 2016 12:03:01 +0100 (BST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 32207400271 for ; Fri, 13 May 2016 11:04:31 +0000 (UTC) References: <40b8e5c6692149a7911fe77631ebb33b@kabelmail.de> <572BB679.2040107@posteo.de> <572BE449.5010806@abelian.org> <279E0DEFDAFA4C849152DBBA3BFEDE8C@White> <572C5E72.7010404@posteo.de> <912731037.20160506233059@mterrier.net> <572D1111.9030302@posteo.de> <572D9843.7060402@abelian.org> <572DBBD3.3020709@posteo.de> <572DC660.5050007@abelian.org> <572E4BF7.1060103@posteo.de> <572F9120.2010200@abelian.org> <5732F442.2050105@posteo.de> <5732F9E8.1090604@abelian.org> <57343F5D.5030502@posteo.de> <5734D996.8080203@abelian.org> <57351A13.3050802@posteo.de> <57357B06.6030701@abelian.org> To: rsgb_lf_group@blacksheep.org From: Paul Nicholson Message-ID: <5735B4BF.3000604@abelian.org> Date: Fri, 13 May 2016 11:04:31 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <57357B06.6030701@abelian.org> X-Scan-Signature: 0b2d339ae1d48966556dfb6ad64e2bce Subject: Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz Content-Type: text/plain; charset=utf-8; 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: 8046 The Eb/N0 of +5.1 dB is correct. It was a very good signal and an easy decode. The 11.2 dB in 24.0 uHz is wrong: there's a mains harmonic in the passband of the background noise measurement. It's not a very strong harmonic, far too small to trigger a hum notch, but when averaged over 11 hours it adds several dB to the background noise measurement against which the 11.2 dB was calculated. So Stefan, a very good signal indeed! -- Paul Nicholson --