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 w0PFK1lu004818 for ; Thu, 25 Jan 2018 16:20:02 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eej7r-0004kj-Pk for rs_out_1@blacksheep.org; Thu, 25 Jan 2018 15:07:39 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eej7q-0004ka-E2 for rsgb_lf_group@blacksheep.org; Thu, 25 Jan 2018 15:07:38 +0000 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1eej7n-0002dE-BZ for rsgb_lf_group@blacksheep.org; Thu, 25 Jan 2018 15:07:37 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id EC36C20E00 for ; Thu, 25 Jan 2018 16:07:31 +0100 (CET) X-DKIM-Result: Domain=posteo.de Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1516892852; bh=FcSr3vx0Paz02V71P7WBrDptP3HAKHSICy1B3zGkv1w=; h=Date:From:To:Subject:From; b=q40lFZrJ36+b9v4G1E1vDtYTkWEmDLFxN/okxX4qF4E1mjkLfkeuab7eX9bbjVaQy wOe7yOqQriOnxM32DzvGz2ce/va1MLiEA+Yr9ncxHVW+Sh/2nwHB7THMU47sLwtR7N R2pFzoHsuJgYLCSvWf58RsKnEgoIpHxJdxrbukNvR7Vme+qQlX9/Hyr4QjK0szh8Mi gXw4MNZZThyNx5dHyJ+e7o0ZuA7bnkg0xNCl0lW7aQ9dbPYu12iFkg2mMX4zL54Y38 o6f+CFvDQMjsY+5rCvyAqBKu1KnK3q8MX1/VnH0SAcn+lGGpQ8Vc0sT80s2u/MFeXH fXTrHST0JCOEg== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3zS54L6jCqz9rxC for ; Thu, 25 Jan 2018 16:07:30 +0100 (CET) Message-ID: <5A69F2B2.8010905@posteo.de> Date: Thu, 25 Jan 2018 16:07:30 +0100 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: <1610de5da6d-171d-1bc8a@webjas-vaa159.srv.aolmail.net> <5A61E0A9.8020204@posteo.de> <66c7face-5740-d30a-d7b9-d1315d4e9e59@abelian.org> <5A6206DC.8070400@posteo.de> <82dbc9de-7d26-c8d4-12d5-e1faff5a640a@abelian.org> <053801d39150$190cd940$4b268bc0$@comcast.net> <135c650b-06e4-6d31-fef8-9927be7ebbda@abelian.org> <997c3a13-1e8e-7d76-0697-d300c1ce3fc7@abelian.org> <5A65B723.6050509@posteo.de> In-Reply-To: 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: Many thanks Paul. Jacek will now have enough data on his storage to produce a decode on his side. Hopefully he finds the time :-) Well, after having 5 nights to analyse from the files kindly provided by RN3AUS, we see that there are significant phase changes each day, almost like in the experiment on 17.47 kHz with Mike Smith. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 974e9bcd09e4f3403f97af2f38f8fb73 Subject: Re: VLF: 300 mA on 4470 Hz, 67 km band Content-Type: multipart/alternative; boundary="------------050608000102030901060304" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_MESSAGE,HTML_TITLE_EMPTY 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 This is a multi-part message in MIME format. --------------050608000102030901060304 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Many thanks Paul. Jacek will now have enough data on his storage to produce a decode on his side. Hopefully he finds the time :-) Well, after having 5 nights to analyse from the files kindly provided by RN3AUS, we see that there are significant phase changes each day, almost like in the experiment on 17.47 kHz with Mike Smith. When applying data that is known by the RX station (for getting a valid decode) we don't get a better Eb/N0 (currently staying at -8.8 dB after 5 days). Either it is propagation or something is wrong with the RX. But the RX worked well just a few days ago, so maybe it is indeed propagation. We could try one character soon or try again on a different frequency, maybe 100 Hz lower to hope for less phase variations and less days needed for stacking. At least for this experiment i will now stop transmitting that message and prepare things for the next *970 Hz* test which can hopefully start this weekend then. 73, Stefan Am 25.01.2018 14:23, schrieb Paul Nicholson: > > Stefan wrote: > > > f = 4470.100000 Hz > > Start time: 18.JAN.2018 16:00:00 UTC > > Symbol period: 60 s > > Characters: 2 > > CRC bits: 16 > > Coding 16K23A (NEW) > > Duration: 13h20min [hh:mm] > > Antenna current: 300 mA > > Todmorden (881.2 km) > -------------------- > > 19/20 Eb/N0 +8.6 dB, S/N -27.7 dB/1Hz, phase 70.3 *Decoded* > 20/21 Eb/N0 +10.8 dB, S/N -25.4 dB/1Hz, phase 65.0 *Decoded* > 21/22 Eb/N0 +4.4 dB, S/N -31.8 dB/1Hz, phase 78.3 *Decoded* > 22/23 Eb/N0 +5.7 dB, S/N -30.5 dB/1Hz, phase 93.2 *Decoded* > 23/24 Eb/N0 +6.1 dB, S/N -30.2 dB/1Hz, phase 92.4 *Decoded* > 24/25 Eb/N0 +6.6 dB, S/N -29.6 dB/1Hz, phase 94.0 *Decoded* > > Average S/N 4470 Hz: -29.2 dB, 5170 Hz: -28.1 dB; > > Bielefeld (303.8 km DL4YHF) > --------------------------- > > 19/20 Eb/N0 -2.0 dB, S/N -38.3 dB/1Hz, phase -45.2; > 20/21 Eb/N0 +12.5 dB, S/N -23.8 dB/1Hz, phase -55.7 *Decoded* > 21/22 Eb/N0 +6.9 dB, S/N -29.4 dB/1Hz, phase -59.7 *Decoded* > 22/23 Eb/N0 -21.0 dB, S/N -57.2 dB/1Hz; > 23/24 Eb/N0 +1.6 dB, S/N -34.6 dB/1Hz, phase -105.2 *Decoded* > 24/25 Eb/N0 +1.9 dB, S/N -34.4 dB/1Hz, phase -95.5 *Decoded* > > Have repairs to the front-end changed the phase response? > > Cumiana (504.6 km IK1QFK) > ------------------------- > > 19/20 Eb/N0 +8.9 dB, S/N -27.4 dB/1Hz, phase -116.3 *Decoded* > 20/21 Eb/N0 +11.3 dB, S/N -24.9 dB/1Hz, phase -105.0 *Decoded* > 21/22 Eb/N0 +7.4 dB, S/N -28.8 dB/1Hz, phase -107.5 *Decoded* > 22/23 Eb/N0 +8.3 dB, S/N -27.9 dB/1Hz, phase -105.4 *Decoded* > 23/24 Eb/N0 +8.3 dB, S/N -28.0 dB/1Hz, phase -95.2 *Decoded* > 24/25 Eb/N0 +8.2 dB, S/N -28.1 dB/1Hz, phase -109.0 *Decoded* > > Average S/N 4470 Hz: -27.5 dB, 5170 Hz: -31.0 dB; > > Warsaw (919.3 km SQ5BPF) > ------------------------ > > 19/20 No uplink > 20/21 No uplink > 21/22 Eb/N0 -3.2 dB, S/N -39.4 dB/1Hz, phase 75.3; > 22/23 Eb/N0 -6.3 dB, S/N -42.5 dB/1Hz, phase 70.7; > 23/24 Eb/N0 -12.1 dB, S/N -48.3 dB/1Hz; > 24/25 Eb/N0 -7.4 dB, S/N -43.6 dB/1Hz, phase -125.2; > > Uplink very intermittent. > > -- > Paul Nicholson > -- > --------------050608000102030901060304 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Many thanks Paul.

Jacek will now have enough data on his storage to produce a decode on his side. Hopefully he finds the time :-)

Well, after having 5 nights to analyse from the files kindly provided by RN3AUS, we see that there are significant phase changes each day, almost like in the experiment on 17.47 kHz with Mike Smith.

When applying data that is known by the RX station (for getting a valid decode) we don't get a better Eb/N0 (currently staying at -8.8 dB after 5 days). Either it is propagation or something is wrong with the RX. But the RX worked well just a few days ago, so maybe it is indeed propagation. We could try one character soon or try again on a different frequency, maybe 100 Hz lower to hope for less phase variations and less days needed for stacking.

At least for this experiment i will now stop transmitting that message and prepare things for the next 970 Hz test which can hopefully start this weekend then.

73, Stefan



Am 25.01.2018 14:23, schrieb Paul Nicholson:

Stefan wrote:

> f = 4470.100000 Hz
> Start time: 18.JAN.2018  16:00:00 UTC
> Symbol period: 60 s
> Characters: 2
> CRC bits: 16
> Coding 16K23A (NEW)
> Duration: 13h20min [hh:mm]
> Antenna current: 300 mA

Todmorden (881.2 km)
--------------------

 19/20 Eb/N0  +8.6 dB, S/N -27.7 dB/1Hz, phase 70.3 *Decoded*
 20/21 Eb/N0 +10.8 dB, S/N -25.4 dB/1Hz, phase 65.0 *Decoded*
 21/22 Eb/N0  +4.4 dB, S/N -31.8 dB/1Hz, phase 78.3 *Decoded*
 22/23 Eb/N0  +5.7 dB, S/N -30.5 dB/1Hz, phase 93.2 *Decoded*
 23/24 Eb/N0  +6.1 dB, S/N -30.2 dB/1Hz, phase 92.4 *Decoded*
 24/25 Eb/N0  +6.6 dB, S/N -29.6 dB/1Hz, phase 94.0 *Decoded*

  Average S/N 4470 Hz: -29.2 dB, 5170 Hz: -28.1 dB;

Bielefeld (303.8 km DL4YHF)
---------------------------

 19/20 Eb/N0  -2.0 dB, S/N -38.3 dB/1Hz, phase  -45.2;
 20/21 Eb/N0 +12.5 dB, S/N -23.8 dB/1Hz, phase  -55.7 *Decoded*
 21/22 Eb/N0  +6.9 dB, S/N -29.4 dB/1Hz, phase  -59.7 *Decoded*
 22/23 Eb/N0 -21.0 dB, S/N -57.2 dB/1Hz;
 23/24 Eb/N0  +1.6 dB, S/N -34.6 dB/1Hz, phase -105.2 *Decoded*
 24/25 Eb/N0  +1.9 dB, S/N -34.4 dB/1Hz, phase  -95.5 *Decoded*

 Have repairs to the front-end changed the phase response?

Cumiana (504.6 km IK1QFK)
-------------------------

 19/20 Eb/N0  +8.9 dB, S/N -27.4 dB/1Hz, phase -116.3 *Decoded*
 20/21 Eb/N0 +11.3 dB, S/N -24.9 dB/1Hz, phase -105.0 *Decoded*
 21/22 Eb/N0  +7.4 dB, S/N -28.8 dB/1Hz, phase -107.5 *Decoded*
 22/23 Eb/N0  +8.3 dB, S/N -27.9 dB/1Hz, phase -105.4 *Decoded*
 23/24 Eb/N0  +8.3 dB, S/N -28.0 dB/1Hz, phase  -95.2 *Decoded*
 24/25 Eb/N0  +8.2 dB, S/N -28.1 dB/1Hz, phase -109.0 *Decoded*

  Average S/N 4470 Hz: -27.5 dB, 5170 Hz: -31.0 dB;

Warsaw (919.3 km SQ5BPF)
------------------------

 19/20 No uplink
 20/21 No uplink
 21/22 Eb/N0  -3.2 dB, S/N -39.4 dB/1Hz, phase 75.3;
 22/23 Eb/N0  -6.3 dB, S/N -42.5 dB/1Hz, phase 70.7;
 23/24 Eb/N0 -12.1 dB, S/N -48.3 dB/1Hz;
 24/25 Eb/N0  -7.4 dB, S/N -43.6 dB/1Hz, phase -125.2;

 Uplink very intermittent.

--
Paul Nicholson
--

--------------050608000102030901060304--