Return-Path: X-Spam-DCC: paranoid 1102; 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=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, 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 u4ECkvOH027792 for ; Sat, 14 May 2016 14:46:57 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1b1Yuj-0004Pw-Br for rs_out_1@blacksheep.org; Sat, 14 May 2016 13:43:25 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1b1Yui-0004Pn-RA for rsgb_lf_group@blacksheep.org; Sat, 14 May 2016 13:43:24 +0100 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1b1Yuh-0004bJ-9C for rsgb_lf_group@blacksheep.org; Sat, 14 May 2016 13:43:23 +0100 Received: from dovecot03.posteo.de (dovecot03.posteo.de [172.16.0.13]) by mout01.posteo.de (Postfix) with ESMTPS id F41A720A06 for ; Sat, 14 May 2016 14:43:21 +0200 (CEST) Received: from mail.posteo.de (localhost [127.0.0.1]) by dovecot03.posteo.de (Postfix) with ESMTPSA id 3r6RGd6Vqtz5vN7 for ; Sat, 14 May 2016 14:43:21 +0200 (CEST) Message-ID: <57371C03.5040906@posteo.de> Date: Sat, 14 May 2016 14:37:23 +0200 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org 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> <57370503.6030803@abelian.org> In-Reply-To: <57370503.6030803@abelian.org> X-Scan-Signature: f38d515a9cad1e977fcfe251941a8120 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: 8059 Hi Paul, Hmm, that's a pity. Maybe it would be useful to run a beacon, periodically the same message in shorter symbols, maybe 40s. A single character would be already fine, like 'R'. This would take 3:33:20 to be sent. I could do this each 4 hours. Or i can send a simple carrier for a few days. However i want to build a circuit which keeps the antenna current constant, even during rain, so the ERP stays constant! 73, Stefan Am 14.05.2016 12:59, schrieb Paul Nicholson: > > Stefan wrote: > > > f = 6470.00000 Hz > > Start time: 13.05.2016 00:00:02 UTC > > Symbol length: 100 s > > Characters: 6 > > I haven't been able to decode this one. The average noise > was 3.7 dB higher than the previous successful message, so > there should still be a couple of dB to spare. > > I've tried a wider range of phase search in case the > day/night phase change was more than expected. > > So far it seems that 6.47 is more variable and unpredictable > than 8.27 which is opposite to what I'd expect. > > -- > Paul Nicholson > -- >