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 w926iwiG025887 for ; Tue, 2 Oct 2018 08:45:01 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1g7EKm-00045p-67 for rs_out_1@blacksheep.org; Tue, 02 Oct 2018 07:39:04 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1g7EKT-000455-OJ for rsgb_lf_group@blacksheep.org; Tue, 02 Oct 2018 07:38:45 +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 4.91_59-0488984) (envelope-from ) id 1g7EKQ-0005el-LN for rsgb_lf_group@blacksheep.org; Tue, 02 Oct 2018 07:38:44 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id 6CE0221156 for ; Tue, 2 Oct 2018 08:38:40 +0200 (CEST) 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=1538462320; bh=JlGCIZVGsH3CU2gKmc4rKLPXKlYX1zLlQwf4r81fm1I=; h=Date:From:To:Subject:From; b=U+k1VF29Sm/iHZLblTt7YvhyXGnqAmA8IDm2B2tHBC9U0zRd0xnSGZr6lnl+3kZZA 4mFGLvAxD+OyYa5A0MJHqTsnazJU1+BhKnKnAFsdgAXZ+6kULnnYmi+bbVws2uX3h+ VMI7gwyb+kctLNYSMYzCTdXjzPgNRIz6xlNFiCpuna45acZ2Bp/gAr1Ub1blwzwjMl 5r+OH1h8bA9T201IZ6KD0UZ+iCjqiiLVmSoFfIgHzLz9l5AP/83rBqpTQdY1quhb40 HuP6PFYoFD2L9YzORnaqEqyPqJ3484FIPU2uqPAynsHTcZtI2RvVeigN6n+XEOuJQk NuDT7Oq6tc3dQ== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 42PTxq47swz6tm7 for ; Tue, 2 Oct 2018 08:38:39 +0200 (CEST) Message-ID: <5BB3126F.2070701@posteo.de> Date: Tue, 02 Oct 2018 08:38:39 +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: <1662d37ac0d-1ec4-25a0@webjasstg-vab49.srv.aolmail.net> In-Reply-To: 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: Hello Domenico, Very well! Your EbNaut grabber is the only one world wide and performs very well. I should do the same, but my Linux PC is nearly overloaded with the VLF stuff. A Raspi could do the job but does not have enough memory i assume... [...] 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 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: 16ae5a6b0cd8af8ba18c7df6d1df8b5a Subject: Re: LF: 2200M EbNaut Beacon Content-Type: multipart/alternative; boundary="------------050007030302000902030001" 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_20_30,HTML_MESSAGE 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. --------------050007030302000902030001 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hello Domenico, Very well! Your EbNaut grabber is the only one world wide and performs very well. I should do the same, but my Linux PC is nearly overloaded with the VLF stuff. A Raspi could do the job but does not have enough memory i assume... 73, Stefan Am 02.10.2018 01:15, schrieb Domenico IZ7SLZ: > LF EbNauters, > > thanks to Markus and Stefan for the comments and to Rob for putting on > air a very good signal. > I was also surprised to see the decode achieved by the auto-decoder > without any time and frequency offset ! > Propagation conditions are becoming better, but noise here is still high. > I tried a deep investigation: no further decode, but with an offset > of -0.0001 Hz and +0.005s (ooops !) i have improved the > 2018-09-30_03:00 UT decode: > > initial reference phase -62.3 amplitude 2.049e-01 > phase 0 0 0 0 0 > carrier phase: -6.9 deg > carrier Eb/N0: 0.5 dB > carrier Es/N0: -10.10 dB > carrier S/N: 19.87 dB in 672.0 uHz, -11.86 dB in 1Hz, -45.84 dB in 2.5kHz > elapsed 58 > found rank 43 ber 3.4980e-01 Eb/N0 -0.6 M -7.389708042e+00 ph 0 > 0,0,0,0 [K3RWR_FM18QI_73] > > > Looking on the October 1st recordings, with these offsets, i got > another decode at 02:30 UT: > > initial reference phase -6.6 amplitude 2.356e-01 > phase 0 0 0 0 0 > carrier phase: -1.2 deg > carrier Eb/N0: 0.4 dB > carrier Es/N0: -10.23 dB > carrier S/N: 19.74 dB in 672.0 uHz, -11.99 dB in 1Hz, -45.97 dB in 2.5kHz > elapsed 58 > found rank 84 ber 3.6694e-01 Eb/N0 -1.7 M -7.504411221e+00 ph 0 > 0,0,0,0 [K3RWR_FM18QI_73] > > QRB is about 7600 km. > > Working conditions here, (vintage 😀) as usual: > - miniwhip (a modified ex-Navtex antenna from Furuno ; see attachment) > - receiver JRC NRD-92M with external 10 MHz reference signal steered > by GPS > - a modest PC (Intel P4 CPU 3.50GHz x2) from scrap with Ubuntu 14.04LTS > - software vlfrx-tool from Paul Nicholson. > > I have attached also the latest version of the bash './autoebnaut' > i.e. the list of the commands that recall vlfrx-tool programs to start > the decoder each 30 minutes. > Other linux programs are running in background: > - vtcard and vttime to manage and calibrate the audio card > - vtwrite to store audio coming from receiver > - gpsd and chrony to manage the nmea and 1pps from neo8 gps (connected > at serial COM1) and adjusting the PC clock. > > > 73, Domenico IZ7SLZ > > > > > > > > > > > > > > On Mon, 1 Oct 2018 at 03:24, Markus Vester > wrote: > > Just happened to see this on Domenico's auto-Decoder: > > https://www.qsl.net/iz7slz/EBNAUT/DECODED.TXT > > 2018-09-30_03:00:00 137470.000Hz N=15 T=1.5s 8K19A CRC=16 > list=1000 sym=992 Duration=1488.0s > found rank 29 ber 3.5081e-01 Eb/N0 -0.7 M -8.147493362e+00 ph 13 > -150,-150,180,180 [K3RWR_FM18QI_73] > found rank 9 ber 3.5988e-01 Eb/N0 -1.3 M -8.275846004e+00 ph 49 > -120,-150,-150,180 [K3RWR_FM18QI_73] > > Cool, well done both! > > 73, Markus (DF6NM) > > > -----Ursprüngliche Mitteilung----- > Von: Rob Renoud > > An: RSGG_LF > > Verschickt: Fr, 28. Sept 2018 15:49 > Betreff: LF: 2200M EbNaut Beacon > > Hello 2200 Meters EbNaut, > > I will run the EbNaut beacon on 28, 29 and 30 September from 2300 > UTC to 1100 UTC this coming weekend as follows: > > Code: 8K19A > Symbol Period: 1.5 sec > CRC: 16 > Number of Char: 15 (K3RWR_FM18QI_73) > Signal Bits: 992 > Duration: 1488 sec (00:24:48.00) > Frequency: 137470.000 Hz > TX Sequence: 2 X per hour starting on minutes 00 and 30 > Power: 1 Watt EIRP > > Reports and comments welcome :-) > > 73, > Rob - K3RWR > FM18qi > “Practicing the Art of Radio” > > --------------050007030302000902030001 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hello Domenico,

Very well! Your EbNaut grabber is the only one world wide and performs very well.

I should do the same, but my Linux PC is nearly overloaded with the VLF stuff.
A Raspi could do the job but does not have enough memory i assume...

73, Stefan

Am 02.10.2018 01:15, schrieb Domenico IZ7SLZ:
LF EbNauters,

thanks to Markus and Stefan for the comments and to Rob for putting on air a very good signal.
I was also surprised to see the decode achieved by the auto-decoder without any time and frequency offset !
Propagation conditions are becoming better, but noise here is still high.
I tried a deep investigation: no further decode,  but with an offset of -0.0001 Hz and +0.005s (ooops !) i have improved the 2018-09-30_03:00 UT decode:

initial reference phase -62.3 amplitude 2.049e-01
phase   0    0    0    0    0
carrier phase: -6.9 deg
carrier Eb/N0: 0.5 dB
carrier Es/N0: -10.10 dB
carrier S/N: 19.87 dB in 672.0 uHz, -11.86 dB in 1Hz, -45.84 dB in 2.5kHz
elapsed 58
found rank 43 ber 3.4980e-01 Eb/N0 -0.6 M -7.389708042e+00 ph 0 0,0,0,0 [K3RWR_FM18QI_73]


Looking on the October 1st recordings, with these offsets,  i got another decode at 02:30 UT:

initial reference phase -6.6 amplitude 2.356e-01
phase   0    0    0    0    0
carrier phase: -1.2 deg
carrier Eb/N0: 0.4 dB
carrier Es/N0: -10.23 dB
carrier S/N: 19.74 dB in 672.0 uHz, -11.99 dB in 1Hz, -45.97 dB in 2.5kHz
elapsed 58
found rank 84 ber 3.6694e-01 Eb/N0 -1.7 M -7.504411221e+00 ph 0 0,0,0,0 [K3RWR_FM18QI_73]

QRB  is about 7600 km.

Working conditions here, (vintage 😀) as usual:
- miniwhip (a modified ex-Navtex antenna from Furuno ; see attachment)
- receiver JRC NRD-92M with external 10 MHz reference signal steered by  GPS
- a modest PC (Intel P4 CPU 3.50GHz x2) from scrap with Ubuntu 14.04LTS
- software vlfrx-tool from Paul Nicholson.

I have attached also the latest version of  the bash './autoebnaut' i.e. the list of the commands that recall vlfrx-tool programs to start the decoder each 30 minutes.
Other linux programs are running in background:
- vtcard and vttime to manage and calibrate the audio card
- vtwrite to store audio coming from receiver
- gpsd and chrony to manage the nmea and 1pps from neo8 gps (connected at serial COM1) and adjusting the PC clock.


73, Domenico IZ7SLZ













On Mon, 1 Oct 2018 at 03:24, Markus Vester <markusvester@aol.com> wrote:
Just happened to see this on Domenico's auto-Decoder:

https://www.qsl.net/iz7slz/EBNAUT/DECODED.TXT

2018-09-30_03:00:00 137470.000Hz N=15 T=1.5s 8K19A CRC=16 list=1000 sym=992 Duration=1488.0s
found rank 29 ber 3.5081e-01 Eb/N0 -0.7 M -8.147493362e+00 ph 13 -150,-150,180,180 [K3RWR_FM18QI_73]
found rank 9 ber 3.5988e-01 Eb/N0 -1.3 M -8.275846004e+00 ph 49 -120,-150,-150,180 [K3RWR_FM18QI_73]

Cool, well done both!

73, Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: Rob Renoud <k3rwr@md.metrocast.net>
An: RSGG_LF <rsgb_lf_group@blacksheep.org>
Verschickt: Fr, 28. Sept 2018 15:49
Betreff: LF: 2200M EbNaut Beacon

Hello 2200 Meters EbNaut,

I will run the EbNaut beacon on 28, 29 and 30 September from 2300 UTC to 1100 UTC this coming weekend as follows:

Code: 8K19A
Symbol Period: 1.5 sec
CRC: 16
Number of Char: 15 (K3RWR_FM18QI_73)
Signal Bits: 992
Duration: 1488 sec (00:24:48.00)
Frequency: 137470.000 Hz
TX Sequence: 2 X per hour starting on minutes 00 and 30
Power: 1 Watt EIRP

Reports and comments welcome :-)

73,
Rob - K3RWR
FM18qi
“Practicing the Art of Radio”


--------------050007030302000902030001--