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 w8I9Zowh022875 for ; Tue, 18 Sep 2018 11:35:51 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1g2CJL-0003nL-Oe for rs_out_1@blacksheep.org; Tue, 18 Sep 2018 10:28:47 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1g2CJI-0003nC-38 for rsgb_lf_group@blacksheep.org; Tue, 18 Sep 2018 10:28:44 +0100 Received: from out1-22.antispamcloud.com ([185.201.16.22]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1g2CJG-0006nt-2U for rsgb_lf_group@blacksheep.org; Tue, 18 Sep 2018 10:28:42 +0100 Received: from 132.178.216.87.static.jazztel.es ([87.216.178.132] helo=servigilant.vigilant.es) by mx120.antispamcloud.com with esmtpsa (TLSv1:ECDHE-RSA-AES128-SHA:128) (Exim 4.89) (envelope-from ) id 1g2CJ8-000t9w-48 for rsgb_lf_group@blacksheep.org; Tue, 18 Sep 2018 11:28:38 +0200 Received: from servigilant.vigilant.local ([fe80::c40d:8140:d722:5448]) by servigilant.vigilant.local ([fe80::c40d:8140:d722:5448%13]) with mapi id 14.03.0123.003; Tue, 18 Sep 2018 11:28:27 +0200 From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= To: "rsgb_lf_group@blacksheep.org" Thread-Topic: LF: LF EbNaut transmission anouncement Thread-Index: AQHUS5n82dCFk+RIdEqlUMlDkhu4gqT1i1QAgAA5hlA= Date: Tue, 18 Sep 2018 09:28:26 +0000 Message-ID: <6DB8451D7F3D3947A5918808A59621EA08623896@servigilant.vigilant.local> References: <6DB8451D7F3D3947A5918808A59621EA08620F78@servigilant.vigilant.local> <5BA0AA84.9080905@posteo.de> In-Reply-To: <5BA0AA84.9080905@posteo.de> Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.22] MIME-Version: 1.0 X-Originating-IP: 87.216.178.132 X-MailAssure-Domain: vigilant.es X-MailAssure-Username: smtpsolarwinds Authentication-Results: antispamcloud.com; auth=pass (login) smtp.auth=smtpsolarwinds@vigilant.es X-MailAssure-Outgoing-Class: ham X-MailAssure-Outgoing-Evidence: Combined (0.30) X-Recommended-Action: accept X-Filter-ID: EX5BVjFpneJeBchSMxfU5v35P2NhPTEpMfK77ez6hKx602E9L7XzfQH6nu9C/Fh9KJzpNe6xgvOx q3u0UDjvOw5j2C7YKailx2Uop+U2Gs8m9etQhNgzEtWqBtUXOJSHVTGbEWWnE2yTxqfzAQugcTKt XCzZ3SceRZuV4WLZNhxIeZjZv1oz6oWKgngYgisMJ0bZP3eYDXxLY7bneVfI6bVpAmL0uQQ1JgMS WpL2zqAf0wQn+qGFwFhnrZWr3AIwIkRInETzFeWnWEMjTrypoJbF8Ivvzp41zJACSToCpX36qyHr byaR4ePUKnm2FKDCDD2gT2inkFvv0JWjnb/IrPOCuoaV6DYsC3dGdIrLGqrW8aZxLG7Y0pk1ZN1X bEZoeGCH+SJjE48GzCqfGD0ud53+zxpzqXnGGiQ01PlGSKsJi5lucXozcAWJZZIdG3Z2NDwiAPJ6 Kw+cgKFzaOFmsJFVgpT1b21uZVckGp0ccOZ1/atoPPXpgcY5OL20mhCuJgQWcrs8q+WcXVXZDcW5 0nQA4NuQg1+/HGgfT4I9ZhrTiEw2ui8TVPldBCj8jBATIPfnHAlC08PQ7TyKM12tawBQKwkQVxvS 5TYQewT1l6NLSaU1eu4MXFDzBT+Ex5OPEq/3gpfDhw/6RJBwn4n3MznjzDI/k4qfLUUHhFnEa/pq 8v2adr3xIBXCBg0CnYzHqhP5Vx9mYbtLHtnDO0U0zCYrtIwlafnLqYYQk954CU09b3leuW1nwm9V qgLZsi1SbGwH5EHTZ56Yts0Xw0X3lJvxQZxDKm/6FUMvMUBH80hy2DNwOgV373pfDhBQ21OdYUOm 5fvWMXipQ+V80TIqPZuLmUbMjhg0DEd+zPjh9/C5AciD3r534W8yYMyVxKqoC8tHbhwU9bRJ9YQQ 0RkXryJZl3Me5gJDDv4NyBpsS9g2kPAiQKyAqeIr3zn0QFnWVgW9/bktU41htiJ8fk7NkHONYiYO dpvlUyaOFS6YnjEmPP4IsIGmW4/5Ep1RHXEb9jihx+Za/cV70jOJzN2r4A== X-Report-Abuse-To: spam@quarantine3.antispamcloud.com X-Spam-Score: 0.3 (/) 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: Hi Stefan, EbNaut Yes, the message was "DOM". Pretty predictable, I'm afraid ;-) >> We need about 4 dB more S/N, i.e. a lower noise or 0.3 W TX power :-) [...] Content analysis details: (0.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [185.201.16.22 listed in list.dnswl.org] 1.0 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail) 0.0 T_KAM_HTML_FONT_INVALID BODY: Test for Invalidly Named or Formatted Colors in HTML 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 49da477724dcbe37f1e9a7ff55a3b02e Subject: RE: LF: LF EbNaut transmission anouncement Content-Type: multipart/alternative; boundary="_000_6DB8451D7F3D3947A5918808A59621EA08623896servigilantvigi_" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=HTML_60_70,HTML_MESSAGE, TO_ADDRESS_EQ_REAL 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 --_000_6DB8451D7F3D3947A5918808A59621EA08623896servigilantvigi_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Stefan, EbNaut Yes, the message was "DOM". Pretty predictable, I'm afraid ;-) >> We need about 4 dB more S/N, i.e. a lower noise or 0.3 W TX power :-) Amazing anyway! I have a class D PA almost ready but minimum power I can get is 24W @12V. I= can try it at 5V but probably excess 1W Maybe "too much" power for EbNaut in the EA<>DL path Difficult concept here. There is NEVER too much power, isn't it ? ;-) I wonder if there is a way to determine the gain of the antenna and finally= the radiated power using this EbNaut measurements All I know here is the Vrms and the impedance of the antenna. My Rx at 7Km = can provide a more stable S/N level independent from ionosferic changes but again this are relative to noise me= asurements and should be calibrated Maybe Paul can measure it and then we can determine the radiated power and = consequently the antenna gain ? 73 de Luis EA5DOM De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blackshe= ep.org] En nombre de DK7FC Enviado el: martes, 18 de septiembre de 2018 9:34 Para: rsgb_lf_group@blacksheep.org Asunto: Re: LF: LF EbNaut transmission anouncement Luis, I further analysed the files from your transmission. The best SNR i'm getti= ng (assuming the message is 'DOM') is 9.07 dB from the 2 UTC transmission. = We need about 4 dB more S/N, i.e. a lower noise or 0.3 W TX power :-) With = 1 W it should be possible to decode your complete callsign! The SNR peaked = at a time offset of -0.5 seconds and a frequency offset of -30 uHz, but tha= t does not tell to much at this low SNR, maybe. Worth to try again! 73, Stefan Am 13.09.2018 21:43, schrieb VIGILANT Luis Fern=E1ndez: Hi EbNaut I will be transmiting an EbNaut message in LF with about 100mW to antenna (= not ERP) during the next 24 h al least Frequency: 137.485Hz Transmissions already started at 19:30 UTC and will repeat twice every hour= at minute 00 and 30 Coding: 16K21A CRC: 16 Symbol: 2 Characters: 3 Number of bits:864 Duration: 00:28:48 Reports wellcome. Let's se what can be donde with really low power 73 de Luis EA5DOM --_000_6DB8451D7F3D3947A5918808A59621EA08623896servigilantvigi_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Stefan,= EbNaut

 = ;

Yes, the message was “DOM”. Pretty predictable, I’m = afraid ;-)

 

>> We need about 4 dB more S/N, i.e.= a lower noise or 0.3 W TX power :-)

 

Amazing anyway!

 

I have a class D PA almost ready but minimum power I can get is 24W @1= 2V. I can try it at 5V but probably excess 1W

Maybe “too much” power for EbNaut in the EA<>DL path=

Difficult concept here. There is NEVER too much power, isn’t it = ? ;-)

 

I wonder if there is a way to determine the gain of the antenna and fi= nally the radiated power using this EbNaut measurements

All I know here is the Vrms and the impedance of the antenna. My Rx at= 7Km can provide a more stable S/N level

independent from ionosferic changes but again this are relative to noi= se measurements and  should be calibrated

 

Maybe Paul can measure it and then we can determine the radiated power= and consequently the antenna gain ?

 

73 de Luis

EA5DOM

 

De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de DK7FC
Enviado el: martes, 18 de septiembre de 201= 8 9:34
Para: rsgb_lf_group@blacksheep.org
Asunto: Re: LF: LF EbNaut transmission anouncement=

 

Luis,

I further analysed the files from your transmission. The best SNR i'm getti= ng (assuming the message is 'DOM') is 9.07 dB from the 2 UTC transmission. = We need about 4 dB more S/N, i.e. a lower noise or 0.3 W TX power :-) With = 1 W it should be possible to decode your complete callsign! The SNR peaked at a time offset of -0.5 seconds an= d a frequency offset of -30 uHz, but that does not tell to much at this low= SNR, maybe.

Worth to try again!

73, Stefan

Am 13.09.2018 21:43, schrieb VIGILANT Luis Fern=E1ndez:

Hi EbNaut

 

I will be transmiting an EbNaut message in LF with a= bout 100mW to antenna (not ERP)

during the next 24 h al least

 

Frequency: 137.485Hz

 

Transmissions already started at 19:30 UTC and will = repeat twice every hour at minute 00 and 30

 

Coding: 16K21A

CRC: 16

Symbol: 2

Characters: 3

 

Number of bits:864

Duration: 00:28:48

 

Reports wellcome. Let's se what can be donde with re= ally low power

 

73 de Luis

EA5DOM

 

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