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 x0H8RjkB008290 for ; Thu, 17 Jan 2019 09:27:57 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gk2x2-0004ig-Ez for rs_out_1@blacksheep.org; Thu, 17 Jan 2019 08:23:00 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gk2x1-0004iX-Tm for rsgb_lf_group@blacksheep.org; Thu, 17 Jan 2019 08:22:59 +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 4.91) (envelope-from ) id 1gk2x0-0005XW-6O for rsgb_lf_group@blacksheep.org; Thu, 17 Jan 2019 08:22:58 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id 2F52416005E for ; Thu, 17 Jan 2019 09:22:56 +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=1547713376; bh=3AwbBnJy7Khzq0tRVEjFruRw7IVQB9n2h1gqifW0VNI=; h=Date:From:To:Subject:From; b=TxdeKiA7YQc0gehQRrRvQMAyOaFmEFHDu83rlL367/DPfwSqpW0dDcXzJzUvcNmsz jMsdArLWVdvYfP3n1If/M70wZL+y90bvSaskqb903+nQ8SiJV/uv80fQ0ZMmLZaR6a VoQA+/9JfgoUbQnq9rQE+iOoIvCamW4t8Debdeus5EYA7ZA8WprTuwfqDqZl2/IjMs KlTio8egey3trXg/6iktr+ftN+wO63H6HfHnhcvsm3cGw9mE7CEaRdnvzDdpFIUFOJ H1+FjkbF6pwQIB6w5y2dxVQ+bUxzMNZ72+cMwwBqCeGCuapVypmOIhbHwF/5ZYtC6F ernjaM/Y6IWhg== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 43gHBl3bDGz6tmJ for ; Thu, 17 Jan 2019 09:22:55 +0100 (CET) Message-ID: <5C403B5E.90401@posteo.de> Date: Thu, 17 Jan 2019 09:22:54 +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: <1541712573053.31739@kuleuven.be> <1542362144885.30626@kuleuven.be> <1542721669174.9290@kuleuven.be> <1542902405876.64977@kuleuven.be> <1544631368092.16214@kuleuven.be> <1544826336986.15705@kuleuven.be> <1545855021519.36262@kuleuven.be> ,,<1577921AD94DD17B.1915@groups.io> <1547497870081.57956@kuleuven.be> <5C3CFB7E.2010605@posteo.de> <5C3CFC32.9030509@posteo.de> <5C3E51A1.9020702@posteo.de> <5C3F2E54.1080204@posteo.de> In-Reply-To: <5C3F2E54.1080204@posteo.de> X-Spam-Score: -2.3 (--) 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 @@CONTACT_ADDRESS@@ for details. Content preview: LF, Unfortunately i obviously forgot to change to symbol length from 4 seconds to 8 seconds, so my message was transmitted in half the time and then followed by a carrier taking about 15 minutes :-/ That [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [185.67.36.65 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 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: e9930714581255985cd8ec23e321b0b6 Subject: Re: LF: Re: EbNaut tonite Content-Type: multipart/alternative; boundary="------------090604050201070102060901" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_60_70,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY 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. --------------090604050201070102060901 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit LF, Unfortunately i obviously forgot to change to symbol length from 4 seconds to 8 seconds, so my message was transmitted in half the time and then followed by a carrier taking about 15 minutes :-/ That costs 3 dB Eb/N0 for the message and will lower the phase plot quality. And i occupied twice the bandwidth. Anyway the message can be decoded. And the carrier can be treated as a second message of identical parameters but the message will be '****'. A lot to play with, for the RX stns. Tonite i'll QSY to ELF (the real ELF, ITU band 1) for the first time here. The tree will come back today and there will be 1 or 2 VLF/ULF experiments this weekend. 73, Stefan Am 16.01.2019 14:15, schrieb DK7FC: > Hello Rob and Jay, > > Many thanks for the reports and all the details. Jay, did you miss the > 22 UTC transmission or did it not decode? > Interesting to see the phase plots. It is expected that the phase is > less stable when the band opens. In the last transmission, the Eb/N0 > is not high enough to see the phase pattern. > I wonder if the traces become more evident if 4K19 is used. > > What happens when a solar event happens during the transmission time? > Does it change the phase or just the D layer attenuation? > Maybe we can repeat the experiment, using 4K19A. Of course a carrier > could be used too, but i like to 'play' with EbNaut. > > So, tonite: > > *f = 137.545 kHz > Start time: 16.JAN.2019 22:00:00.3 UTC > Symbol period: 8 s > Characters: 4 > CRC bits: 16 > Coding 4K19A > Antenna current: 4 A > Duration: 30:56 [mm:ss] > > > * 73, Stefan > > > Am 16.01.2019 12:29, schrieb Rob Renoud: >> Stefan, >> Late start but 7 successful decodes. Have not gotten to phase plots >> yet... >> *UTC* *Rank* *C Eb/N0* *Eb/N0* *MSG* *Ref Phase* >> 0100 0 5.6 1.6 2019 0,-30,0 30 >> 0200 0 6.9 0.4 2019 60,30 30 0 >> 0300 0 9.9 5.8 2019 90,60,60,0 >> 0400 0 11.2 8.8 2019 180,180,150,150 >> 0500 0 6.3 2.7 2019 0,-30,-30,-60 >> >> 73, >> Rob – K3RWR >> *From:* DK7FC >> *Sent:* Tuesday, January 15, 2019 9:33 PM >> *To:* rsgb_lf_group@blacksheep.org >> *Subject:* Re: LF: Re: EbNaut tonite >> LF, >> >> Today, the messages will be transmitted as announced, starting 22 UTC >> >> 73, Stefan >> >> Am 14.01.2019 22:16, schrieb DK7FC: >>> PS: Repeatinh hourly, until including 6 UTC. >>> >>> Am 14.01.2019 22:13, schrieb DK7FC: >>>> Hi LF, >>>> >>>> Just a short EbNaut message tonite. I'm interested to see the phase >>>> changes on a long path. Markus's showrawsyms does a good job there, >>>> as long as 8K19A is used. A shorter message should also help to >>>> build up a clear trace. >>>> So let's try an unusual short message: >>>> >>>> *f = 137.545 kHz >>>> Start time: 14.JAN.2019 22:00:00.3 UTC >>>> Symbol period: 4 s >>>> Characters: 4 >>>> CRC bits: 16 >>>> Coding 8K19A >>>> Antenna current: 4 A >>>> Duration: 30:56 [mm:ss]* >>>> >>>> Reports, including phase plots, welcome :-) >>>> >>>> 73, Stefan --------------090604050201070102060901 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit LF,

Unfortunately i obviously forgot to change to symbol length from 4 seconds to 8 seconds, so my message was transmitted in half the time and then followed by a carrier taking about 15 minutes :-/
That costs 3 dB Eb/N0 for the message and will lower the phase plot quality. And i occupied twice the bandwidth. Anyway the message can be decoded. And the carrier can be treated as a second message of identical parameters but the message will be '****'.
A lot to play with, for the RX stns.

Tonite i'll QSY to ELF (the real ELF, ITU band 1) for the first time here. The tree will come back today and there will be 1 or 2 VLF/ULF experiments this weekend.

73, Stefan


Am 16.01.2019 14:15, schrieb DK7FC:
Hello Rob and Jay,

Many thanks for the reports and all the details. Jay, did you miss the 22 UTC transmission or did it not decode?
Interesting to see the phase plots. It is expected that the phase is less stable when the band opens. In the last transmission, the Eb/N0 is not high enough to see the phase pattern.
I wonder if the traces become more evident if 4K19 is used.

What happens when a solar event happens during the transmission time? Does it change the phase or just the D layer attenuation?
Maybe we can repeat the experiment, using 4K19A. Of course a carrier could be used too, but i like to 'play' with EbNaut.

So, tonite:

f = 137.545 kHz
Start time: 16.JAN.2019  22:00:00.3 UTC
Symbol period: 8 s
Characters: 4
CRC bits: 16
Coding 4K19A
Antenna current: 4 A
Duration: 30:56 [mm:ss]


 73, Stefan


Am 16.01.2019 12:29, schrieb Rob Renoud:
Stefan,
 
Late start but 7 successful decodes.  Have not gotten to phase plots yet...
 
UTC Rank C Eb/N0 Eb/N0 MSG Ref Phase
0100 0 5.6 1.6 2019 0,-30,0 30
0200 0 6.9 0.4 2019 60,30 30 0
0300 0 9.9 5.8 2019 90,60,60,0
0400 0 11.2 8.8 2019 180,180,150,150
0500 0 6.3 2.7 2019 0,-30,-30,-60
 
73,
Rob – K3RWR
 
 
From: DK7FC
Sent: Tuesday, January 15, 2019 9:33 PM
Subject: Re: LF: Re: EbNaut tonite
 
LF,

Today, the messages will be transmitted as announced, starting 22 UTC

73, Stefan

Am 14.01.2019 22:16, schrieb DK7FC:
PS: Repeatinh hourly, until including 6 UTC.

Am 14.01.2019 22:13, schrieb DK7FC:
Hi LF,

Just a short EbNaut message tonite. I'm interested to see the phase changes on a long path. Markus's showrawsyms does a good job there, as long as 8K19A is used. A shorter message should also help to build up a clear trace.
So let's try an unusual short message:

f = 137.545 kHz
Start time: 14.JAN.2019  22:00:00.3 UTC
Symbol period: 4 s
Characters: 4
CRC bits: 16
Coding 8K19A
Antenna current: 4 A
Duration: 30:56 [mm:ss]

Reports, including phase plots, welcome :-)

73, Stefan
--------------090604050201070102060901--