Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id vA9IwU2F020306 for ; Thu, 9 Nov 2017 19:58:31 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eCrwL-0001dh-7i for rs_out_1@blacksheep.org; Thu, 09 Nov 2017 18:52:37 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eCrwK-0001dY-NA for rsgb_lf_group@blacksheep.org; Thu, 09 Nov 2017 18:52:36 +0000 Received: from simone.ucs.mun.ca ([134.153.232.76]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1eCrwG-00087N-Ox for rsgb_lf_group@blacksheep.org; Thu, 09 Nov 2017 18:52:35 +0000 Received: from plato.ucs.mun.ca (plato.ucs.mun.ca [134.153.232.153]) by simone.ucs.mun.ca (8.13.8/8.13.8) with ESMTP id vA9IqOv3018681 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 9 Nov 2017 15:22:24 -0330 Date: Thu, 9 Nov 2017 15:22:24 -0330 (NST) From: jcraig@mun.ca X-X-Sender: jcraig@plato.ucs.mun.ca To: rsgb_lf_group@blacksheep.org In-Reply-To: Message-ID: References: <15f68ccfd03-c09-1dcf0@webjas-vaa134.srv.aolmail.net> <40168a26-8991-6998-e541-585a8575ad32@abelian.org> <59FDE6BD.5050606@posteo.de> <59FDEDE9.2090908@posteo.de> <1de81fc5-1f20-4dff-be22-77ef12ef5b21@abelian.org> MIME-Version: 1.0 X-Spam-Score: -0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Thank-you again, Paul. Tonight an unmodulated carrier with better phase stability (hopefully). 73 Joe VO1NA On Thu, 9 Nov 2017, Paul Nicholson wrote: [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: fc152e7304849b9a177649b85aea9f41 Subject: Re: VLF: VO1NA in Todmorden on 8270 Hz - also in Amberg? Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME autolearn=no version=2.63 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 Thank-you again, Paul. Tonight an unmodulated carrier with better phase stability (hopefully). 73 Joe VO1NA On Thu, 9 Nov 2017, Paul Nicholson wrote: > >> cat msg7 | >> ebnaut -et -N8 -k20 -p16K21A | >> sudo ebkey -S21 -m rp,gpio=23 -T '20171106 2200' > > Decoded 'EINSTEIN' from the overnight 8th/9th transmission. > > Eb/N0 = -0.5 dB, constant reference phase, BER 41.1 % > > Symbol error map http://abelian.org/vlf/tmp/171109a.gif > > Night Eb/N0 Phase S/N > 6/7th -20.0 dB < -48 dB in 1Hz > 7/8th -3.7 dB 97.6 -31.79 dB in 1Hz (E+H) > 8/9th -0.5 dB 128.8 -28.63 dB in 1Hz (E+H) > > 8/9th -3.2 dB 131.1 H-field only > 8/9th -2.3 dB 126.7 E-field only > > Nothing at all from the 1st night and clearly something > broke during the 2nd night. > > After a full phase search I got a slight improvement to -0.4 dB > with phase pattern -150,-150,180,180, which means the signal > phase is lagging a little (on average) after about 02:00. > > This decode is about at the limit for the transmitter power and > message duration. Looking at the error map, we might be able to > use a longer message but will probably only manage 9 chars max. > > -- > Paul Nicholson > -- > >