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 w8NKnRN2026625 for ; Sun, 23 Sep 2018 22:49:28 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1g4B7q-0001Ek-TY for rs_out_1@blacksheep.org; Sun, 23 Sep 2018 21:37:06 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1g4B7p-0001Eb-SH for rsgb_lf_group@blacksheep.org; Sun, 23 Sep 2018 21:37:05 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1g4B7l-0006L6-Qn for rsgb_lf_group@blacksheep.org; Sun, 23 Sep 2018 21:37:04 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id B6E6F20EC6 for ; Sun, 23 Sep 2018 22:36:58 +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=1537735019; bh=BeW4kS6vEE/4m0rlYkQQF30kkt0kW5DTdU4IOUIRqv4=; h=Date:From:To:Subject:From; b=C/6VqfAQ4Vb1DHfheWP+vUmQKJj6DulIHUEr0zsjeV6BVGcYhRWnnVMcPJfC30vlF RL2pKNA6YZzErek4TwV5xNpzOCPmohCyigzKqYRh6xtJpQ1d2s4Pn+aIeVCxDAeXS4 G+jsgbReErVgU/Dqg8q2etgHuK2BgYvKp1wy+rASgdD6NAMNm2UMTercQqitMSvXYo kVnEIL2omZe3YybXjwuWc6sVs8vc//hTZJba3n7lYWYsbrRcYO7XRYpRm/vQelY9wX XRJeg3B3tgwMKNczEMchvG+zl3GGyygbX3o96XqRhM+hfXnDc9AeEThy3+HIqpv4Ij iWqJceZNXsLPA== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 42JJzF6snTz9rxk for ; Sun, 23 Sep 2018 22:36:57 +0200 (CEST) Message-ID: <5BA7F968.2050301@posteo.de> Date: Sun, 23 Sep 2018 22:36:56 +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: <6DB8451D7F3D3947A5918808A59621EA0863C3CF@servigilant.vigilant.local> In-Reply-To: <6DB8451D7F3D3947A5918808A59621EA0863C3CF@servigilant.vigilant.local> 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: Hi Luis, I tried to decode your message and almost got a decode. But i have QRM on that frequency a mixing product in the front end of my RX antenna. I should work on it, i know... The best SNR was 11.3 dB for the 04:30 message. But this only tells that it was the best compromise between my QRM which disappears when the day begins and your signal which was still theer at that time. I found an unexpected time offset of 0.5 seconds. [...] 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 [185.67.36.66 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: f9f85a03ab18710b130c40acc03380f0 Subject: Re: LF: EA5DOM EbNaut Tx test in 137.485 Content-Type: multipart/alternative; boundary="------------020204020400070607090001" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_FONT_BIG, 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. --------------020204020400070607090001 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Hi Luis, I tried to decode your message and almost got a decode. But i have QRM on that frequency a mixing product in the front end of my RX antenna. I should work on it, i know... The best SNR was 11.3 dB for the 04:30 message. But this only tells that it was the best compromise between my QRM which disappears when the day begins and your signal which was still theer at that time. I found an unexpected time offset of 0.5 seconds. On a different frequency it would be no problem at all. That's how my local situation looks on that frequency: http://www.iup.uni-heidelberg.de/schaefer_vlf/LF/opds32.jpg 73, Stefan Am 21.09.2018 10:24, schrieb VIGILANT Luis Fernández: > > Hi EbNaut > > Yesterday installed the PA and my intention was to transmit with the > lowest possible power (about 24W at 12V in LOW mode) > > but Murphy confirmed that the lowest possible power .....is always > zero. Something went wrong L > > Anyway cound trim the antenna to resonance. It was a couple of KHz > down. And using the mosfet driver at 14V > > could see some improvements in output level and the device clearly > heating. No Vrms meter available so I can't > > confirm the output power or current for this transmissions > > Trying to check if there could be a decode at Domenico's EbNaut > decoder I transmitted all night > > with the usual parameters for weak signal in a less than half an hour > message. May be Stefan can > > use the files he is recording and check for the transmission > > *f = 137485.000 Hz > Start time: 20.SEP.2018 19:00:00 UTC up to 05:30:00 UTC (message > starting at minute 00 and 30 every hour) > Symbol period: 2s > Characters: 3 > CRC bits:** 19** > Coding 16K21A > > * > > The message is "DOM", so if anyone wants to correlate the received > signal and get some extra dBs. This is extremely > > weak signal. The input power to the antenna must be well under 1W, so > the ERP must be very low > > There was no decode at Domenico's grabber > > https://www.qsl.net/iz7slz/EBNAUT/DECODED.TXT > > Just for measurement of signal I can run a permanent carrier tonight > if this can help > > 73 de Luis > > EA5DOM > --------------020204020400070607090001 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Luis,

I tried to decode your message and almost got a decode. But i have QRM on that frequency a mixing product in the front end of my RX antenna. I should work on it, i know...
The best SNR was 11.3 dB for the 04:30 message. But this only tells that it was the best compromise between my QRM which disappears when the day begins and your signal which was still theer at that time.
 I  found an unexpected time offset of 0.5 seconds.

On a different frequency it would be no problem at all. That's how my local situation looks on that frequency: http://www.iup.uni-heidelberg.de/schaefer_vlf/LF/opds32.jpg

73, Stefan

Am 21.09.2018 10:24, schrieb VIGILANT Luis Fernández:

Hi EbNaut

 

Yesterday installed the PA and my intention was to transmit with the lowest possible power (about 24W at 12V in LOW mode)

but Murphy confirmed that the lowest possible power …..is always zero. Something went wrong L

 

Anyway cound trim the antenna to resonance. It was a couple of KHz down. And using the mosfet driver at 14V

could see some improvements in output level and the device clearly heating. No Vrms meter available so I can’t

confirm the output power or current for this transmissions

 

Trying to check if there could be a decode at Domenico’s EbNaut decoder I transmitted all night

with the usual parameters for weak signal in a less than half an hour message. May be Stefan can

use the files he is recording and check for the transmission

 

f = 137485.000 Hz
Start time: 20.SEP.2018  19:00:00 UTC up to 05:30:00 UTC (message starting at minute 00 and 30 every hour)
Symbol period: 2s
Characters: 3
CRC bits: 19
Coding 16K21A

The message is “DOM”, so if anyone wants to correlate the received signal and get some extra dBs. This is extremely

weak signal. The input power to the antenna must be well under 1W, so the ERP must be very low

 

There was no decode at Domenico’s grabber

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

 

Just for measurement of signal I can run a permanent carrier tonight if this can help

 

73 de Luis

EA5DOM

 

--------------020204020400070607090001--