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 w1FMY7ZR024323 for ; Thu, 15 Feb 2018 23:34:10 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1emRzG-0000Je-Mn for rs_out_1@blacksheep.org; Thu, 15 Feb 2018 22:26:42 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1emRxd-0000JR-KC for rsgb_lf_group@blacksheep.org; Thu, 15 Feb 2018 22:25:01 +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 1emRxa-0000J6-BJ for rsgb_lf_group@blacksheep.org; Thu, 15 Feb 2018 22:25:00 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id D295020F1A for ; Thu, 15 Feb 2018 23:24:52 +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=1518733492; bh=MD/zzUVRI7V8ZqvP/O40JHAvUk1ZKQ3v89rLLGB7Puw=; h=Date:From:To:Subject:From; b=YqhZa7sFjNHPu8HBJVAAj+sjmKckArP3+odOchWVA2RJ0rgoSEEq3mu3GPZSHn7lo EswGLhqesmqtJnlm8wNLSdCU5mZ+s9o1skogDPZKc3JvPFkgr3G4/3Q4Bf3J+7RHl8 8A+lDbTP+eM5yQP7zTsYD+WCHHWyY4aGeghDqNJvDJFcF7Pm7qIOXniT8YPP1EfFjn rC++fANqsWuGYje/9QsLXCo3zQVWVqRW5a9H+cEKJKSrzXZi1w9zj9wvZMRgEx5YjA v0pjM6MmcPy2zv3rKRZ5u+4gMNv7fvlnn9FpaijL8DYGrg7+zU/MO8dzV2Xn6han4D NFwjovmXvw3Qg== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3zj9nJ1r66z9rxD for ; Thu, 15 Feb 2018 23:24:51 +0100 (CET) Message-ID: <5A8608B2.8070604@posteo.de> Date: Thu, 15 Feb 2018 23:24:50 +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: <16190cf8b40-c90-b333@webjas-vab243.srv.aolmail.net> <5A8349C2.8010504@posteo.de> <5A856EA9.20506@posteo.de> In-Reply-To: <5A856EA9.20506@posteo.de> 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: VLF, No transmission tonite again. Something is not working with the PA :-/ I replaced a FET that died due to heat. Now the working point seems to cause a thermal drifting towards bad efficiency. The DC offset seems to be to high and there is no thermal feedback diode on the heat sink... I'll investigate... [...] 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: 91e1efbff209cbddb14bc9e018c2cfe8 Subject: Re: VLF: sub-9-kHz TA E>W ? Content-Type: multipart/alternative; boundary="------------090007040700070908050509" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.0 required=5.0 tests=HTML_20_30,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. --------------090007040700070908050509 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit VLF, No transmission tonite again. Something is not working with the PA :-/ I replaced a FET that died due to heat. Now the working point seems to cause a thermal drifting towards bad efficiency. The DC offset seems to be to high and there is no thermal feedback diode on the heat sink... I'll investigate... 73, Stefan Am 15.02.2018 12:27, schrieb DK7FC: > VLF, > > Last night (14th/15Th) my transmission failed. I still don't know the > reason but will check it later. I hope to be on air again this night... > > 73, Stefan > > Am 13.02.2018 21:25, schrieb DK7FC: >> Thanks Markus, >> >> 29 dB S/N, quite a good result on your side :-) >> From the tree i received the message with 0 symbol errors even. >> I got the file from Jay. It looks we will need a long time :-) But >> tomorrow the tendency may be a bit more clear (even if not clear it >> will be clear :-) ). Let's hope the stacked file will show better >> than -10 dB tomorrow... >> >> 73, Stefan >> >> Am 13.02.2018 21:16, schrieb Markus Vester: >>> Hi Stefan, >>> >>> excellent "local" decode from the cardioid in Amberg: >>> >>> list rank 0 >>> reference phase 180,180,180,180 >>> carrier S/N 29.02 dB in 39.1 uHz, -15.06 dB in 1Hz, -49.04 dB in 2.5kHz >>> carrier Es/N0 -0.01 dB >>> carrier Eb/N0 21.46 dB >>> info bit period 4491.23 seconds >>> symbol error rate 81/800 = 10.125 % >>> Es/N0 from symbol errors -0.9 dB >>> Eb/N0 from symbol errors 20.6 dB >>> Shannon capacity 112.3 bits/hour >>> Shannon efficiency 0.7 % >>> symbols file 8k27W_02130025-symbols.csv >>> elapsed 34 seconds >>> >>> Good luck to you and Jay, and anyone else who might want to take the >>> challenge. >>> >>> 73, Markus >>> >>> >>> >>> -----Ursprüngliche Mitteilung----- >>> Von: DK7FC >>> An: rsgb_lf_group >>> Verschickt: Di, 13. Feb 2018 0:01 >>> Betreff: Re: VLF: sub-9-kHz TA E>W ? >>> >>> VLF, >>> >>> OK, Jay responded to me personally. We will take the challenge. >>> >>> The first transmission is already running: >>> >>> *f = 8270.1000 Hz >>> Start time: 12.FEB.2018 22:32:00 UTC (daily) >>> Symbol period: 32 s >>> Characters: 1 >>> CRC bits: 24 >>> Coding 16K21A >>> Duration: 07:06:40 [hh:mm:ss] >>> Antenna current: 700 mA* >>> >>> Reports welcome :-) >>> >>> 73, Stefan >>> >>> >>> >>> Am 12.02.2018 15:00, schrieb DK7FC: >>> >>> Jay, >>> >>> You are the one! The one on the other side of the pond who could >>> manage to get a decode of a message trasnmitted on 8270 Hz, >>> transatlantic east to west. This has not been done so far. >>> >>> Are you interested and ready? You would need to run your PC for >>> a few days without restarting SpecLab or doing changes in that >>> SpecLab instance. You could provide the txt files so i can have >>> a look and see if the stacked Eb/N0 is building up, confirming >>> that it makes sense to continue to transmit. >>> >>> I have no idea if this will work with my small signal. >>> >>> Do we want to try? I would start transmitting this evening >>> already if you say GO! >>> >>> 73, Stefan >>> --------------090007040700070908050509 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit VLF,

No transmission tonite again. Something is not working with the PA :-/ I replaced a FET that died due to heat. Now the working point seems to cause a thermal drifting towards bad efficiency. The DC offset seems to be to high and there is no thermal feedback diode on the heat sink... I'll investigate...

73, Stefan

Am 15.02.2018 12:27, schrieb DK7FC:
VLF,

Last night (14th/15Th) my transmission failed. I still don't know the reason but will check it later. I hope to be on air again this night...

73, Stefan

Am 13.02.2018 21:25, schrieb DK7FC:
Thanks Markus,

29 dB S/N, quite a good result on your side :-)
>From the tree i received the message with 0 symbol errors even.
I got the file from Jay. It looks we will need a long time :-) But tomorrow the tendency may be a bit more clear (even if not clear it will be clear :-) ). Let's hope the stacked file will show better than -10 dB tomorrow...

73, Stefan

Am 13.02.2018 21:16, schrieb Markus Vester:
Hi Stefan,

excellent "local" decode from the cardioid in Amberg:

list rank 0
reference phase 180,180,180,180
carrier S/N 29.02 dB in 39.1 uHz, -15.06 dB in 1Hz, -49.04 dB in 2.5kHz
carrier Es/N0 -0.01 dB
carrier Eb/N0 21.46 dB
info bit period 4491.23 seconds
symbol error rate 81/800 = 10.125 %
Es/N0 from symbol errors -0.9 dB
Eb/N0 from symbol errors 20.6 dB
Shannon capacity 112.3 bits/hour
Shannon efficiency 0.7 %
symbols file 8k27W_02130025-symbols.csv
elapsed 34 seconds

Good luck to you and Jay, and anyone else who might want to take the challenge.

73, Markus



-----Ursprüngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Di, 13. Feb 2018 0:01
Betreff: Re: VLF: sub-9-kHz TA E>W ?

VLF,

OK, Jay responded to me personally. We will take the challenge.

The first transmission is already running:

f = 8270.1000 Hz
Start time: 12.FEB.2018  22:32:00 UTC (daily)
Symbol period: 32 s
Characters: 1
CRC bits: 24
Coding 16K21A
Duration: 07:06:40 [hh:mm:ss]
Antenna current: 700 mA

Reports welcome :-)

73, Stefan



Am 12.02.2018 15:00, schrieb DK7FC:
Jay,

You are the one! The one on the other side of the pond who could manage to get a decode of a message trasnmitted on 8270 Hz, transatlantic east to west. This has not been done so far.

Are you interested and ready? You would need to run your PC for a few days without restarting SpecLab or doing changes in that SpecLab instance. You could provide the txt files so i can have a look and see if the stacked Eb/N0 is building up, confirming that it makes sense to continue to transmit.

I have no idea if this will work with my small signal.

Do we want to try? I would start transmitting this evening already if you say GO!

73, Stefan

--------------090007040700070908050509--