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 w8M96sRU016960 for ; Sat, 22 Sep 2018 11:06:55 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1g3dlM-0003VV-2K for rs_out_1@blacksheep.org; Sat, 22 Sep 2018 09:59:40 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1g3dk9-0003VK-VJ for rsgb_lf_group@blacksheep.org; Sat, 22 Sep 2018 09:58:26 +0100 Received: from mail-oi0-x22e.google.com ([2607:f8b0:4003:c06::22e]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1g3dk5-0002XN-Th for rsgb_lf_group@blacksheep.org; Sat, 22 Sep 2018 09:58:22 +0100 Received: by mail-oi0-x22e.google.com with SMTP id d63-v6so376647oic.12 for ; Sat, 22 Sep 2018 01:58:20 -0700 (PDT) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=OdiQcu4KzUHnyctM5WxfYGF2+7hGSHS1tj5GxQN08VU=; b=LbF+jEENM343cDsa+ikz4o0C4wmPL8MCReuKqGAZWTKmy/zw0c29/gyAIiQMad+qUR O8NWf7bCPk6GwHIlchrfVN8UosNELxwMUIM6tc4/K6/Tj2nAe1Yj+YdbrHFdT+fjywpr 2BDWxqZ3ZWmzYXWPGXvShiRlb5cA5I8w9I5rqkIG4/L2NNYiBuAYkfnMF/v5dW9UPcFq iQ2Qg7Lz5tBYdpwg+JtnnZd01KJld2vp4wOlJOYO0eZ53RQ2TCe91auVa05vkVGLHsnw fFBpPotBKgJvLpJvfFAgvsr0gXm13tZDpOp8rGLPBDl4AVwnNZ/VBpxwZUhEQkGThGVt WihA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=OdiQcu4KzUHnyctM5WxfYGF2+7hGSHS1tj5GxQN08VU=; b=iZawYOrzop3mPwtWQlK2Xzphc0sqo7oau5Et7YlEr3ZbKrTna6W+RNwahGXb6V5tX0 F6UY4urHc4accFEn1FOZVX0r0U8deVHZhKpOYqf1RvXgJP0dX27wRNDYf/BsjTKBbZdS Rqbs2WU9mQnh2yCskgYhEQSzZkyorzAJB2Y5sZelmVDqxIgP13Yeh5DO/U69gn+UUR9M lXEvQ8AOIrzRMV6jcOYTOrDmRTcJfhulhSikJSKk1MT4U3cdiZk3MG8rUIs8NlN1q03N PVbIANyXfmpx5d61F/7VutzwkZ3O7+1ooQrWG5VT6RHQA0vqwgSCOLLuJlx1CvFXmiYm vztg== X-Gm-Message-State: APzg51CiV31bEX04kfYJ7nhoIHbb3oP3SJh180n8EtwnmGm3mTDanmk8 5VztGhgrh+/dug4sPXYysaaLHLMvgdpCSEKIvoFbI7aNf84= X-Google-Smtp-Source: ANB0VdYNRzUSm0A9vPTmdYXHpLNralxSrO2p3Wi9lmgAPufYnkZfy/jO2TtLL7hT585RN7ORhk5oCpd2YWTRYX8/4JM= X-Received: by 2002:aca:6285:: with SMTP id w127-v6mr698385oib.120.1537606698506; Sat, 22 Sep 2018 01:58:18 -0700 (PDT) MIME-Version: 1.0 References: <6DB8451D7F3D3947A5918808A59621EA0863C3CF@servigilant.vigilant.local> In-Reply-To: <6DB8451D7F3D3947A5918808A59621EA0863C3CF@servigilant.vigilant.local> From: Domenico IZ7SLZ Date: Sat, 22 Sep 2018 10:57:36 +0200 Message-ID: To: rsgb_lf_group@blacksheep.org 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 @@CONTACT_ADDRESS@@ for details. Content preview: Hello Luis and all, returned home today and now it's time to 'play' a little bit with our fantastic 'hobby' ! I have tried to search for your signal in the recordings. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2607:f8b0:4003:c06:0:0:0:22e listed in] [list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (iz7slz.domenico[at]gmail.com) -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: bf14357d5ee2e4a717b88d90ab36122c Subject: Re: LF: EA5DOM EbNaut Tx test in 137.485 Content-Type: multipart/alternative; boundary="000000000000119c69057671f5dc" 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_20_30,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 --000000000000119c69057671f5dc Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello Luis and all, returned home today and now it's time to 'play' a little bit with our fantastic 'hobby' ! I have tried to search for your signal in the recordings. This is very easy to do with linux and vlfrx-tools. In fact i'm recording the audio from the LF receiver with the program 'vtwrite'. This program creates its proper files in a dedicated hard disk (used only for the storage) . I setted vtwrite to create one file each 24 hour. It is very confortable to retry the raw data by using 'vtread' program, just specify the date, the duration and the location of the storage directory. In this way, it is possible to post-processings any possible transmissions in the audio band recordered. You can 'play' anytime the raw file and change the parameters, offsets or NB settings. Nice tools, thanks again to Paul Nicholson. But, sorry to say that, till now, the search of your 'DOM' message is without results. Maybe one of the parameters you have announced is different from that you have really used. That's becouse the duration for 16K21A, CRC=3D19, 3 Chars, 2 (total 912 bits) is more than 30 minutes for T=3D2s and maybe some symbols were not transmitted due to your 'half hour beaconing'. There is also a lack of sensitivity on LF on my receiver. Noise floor, also during nightime, is very high (one week ago was less) and i suspect some hardware trouble here (groundings or a new local 'macoomba' noise). Investigation is started. I have a second receiver, GPS referenced, tuned on MF op8 band (478.450-478.550) https://www.qsl.net/iz7slz/OPDS8/opds8.jpg Interesting to see and analyze some OP8 signals on that band. The opds program (from Markus DF6NM) is giving some interesting results ( https://www.qsl.net/iz7slz/OPDS8/DETECTED8.TXT ) Dear Luis, can i suggest you (or other operators) to try an EbNaut transmission on that MF band ? Autodecoder webpage is setted for R3RWR transmissions now, but it's easy to change parameters. You can transmitt anytime, since also MF band is recordered in a separate storage media. Waiting for your comment. 73, Domenico IZ7SLZ On Fri, 21 Sep 2018 at 10:27, VIGILANT Luis Fern=C3=A1ndez wrote: > 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 =E2=80=A6..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=E2=80=99t > > confirm the output power or current for this transmissions > > > > Trying to check if there could be a decode at Domenico=E2=80=99s EbNaut d= ecoder 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 =3D 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 =E2=80=9CDOM=E2=80=9D, 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=E2=80=99s 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 > > > --000000000000119c69057671f5dc Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello Luis and all,=

returned home today and now it's t= ime to 'play' a little bit with our fantastic 'hobby' !
=

I have tried to search for your signal= in the recordings.

This is very easy to do with l= inux and vlfrx-tools. In fact i'm recording the audio from the LF recei= ver with the program 'vtwrite'. This program creates its proper fil= es in a dedicated hard disk (used only for the storage) . I setted vtwrite = to create one file each 24 hour.=C2=A0 It is very confortable to retry the = raw data by using 'vtread' program, just specify the date, the dura= tion and the location of the storage directory. In this way, it is possible= to post-processings any possible transmissions in the audio band recordere= d. You can 'play' anytime the raw file and change the parameters, o= ffsets or NB settings.
Nice tools, thanks again to Paul Nicholson= .

But, sorr= y to say that,=C2=A0 till now,=C2=A0 the search of your 'DOM' messa= ge is without results.
Maybe one of the parameters you have = announced is different from that you have really used. That's becouse t= he duration for
16K21A, CRC=3D19, 3 Chars, 2 (total 912 bits) is = more than 30 minutes for T=3D2s and maybe some symbols were not transmitted= due to your 'half hour beaconing'.

There = is also a lack of sensitivity on LF on my receiver. Noise floor, also durin= g nightime, is very high (one week ago was less)=C2=A0 and i suspect some h= ardware trouble here (groundings or a new local 'macoomba' noise). = Investigation is started.

I have=C2=A0 a second re= ceiver, GPS referenced, =C2=A0 tuned on MF op8 band (478.450-478.550) =C2= =A0 https://www.qsl.net/iz7slz/OPDS8/opds8.jpg
Interesting = to see and analyze some OP8 signals on that band. The opds program (from Ma= rkus DF6NM) is giving some interesting results ( https://www.qsl.net/iz7slz/OPDS8/DETECTED8= .TXT )

Dear Luis, can i sugges= t you (or other operators) to try an EbNaut transmission on that MF band ?<= /div>
Autodecoder webpage is setted for R3RWR transmissions now, but it= 's easy to change parameters. You can transmitt anytime, since also MF = band is recordered in a separate storage media.

Wa= iting for your comment.

73, Domenico IZ7SLZ
<= div>



On Fri, 21 Sep 2018 at 10:27, VIGILANT L= uis Fern=C3=A1ndez <luis@vigilant.es> wrote:

Hi EbNaut

=C2=A0

Yesterday installed the PA and = my intention was to transmit with the lowest possible power (about 24W at 1= 2V in LOW mode)

but Murphy confirmed that the l= owest possible power =E2=80=A6..is always zero. Something went wrong L

=C2=A0

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

could see some improvements in = output level and the device clearly heating. No Vrms meter available so I c= an=E2=80=99t

confirm the output power or cur= rent for this transmissions

=C2=A0

Trying to check if there could = be a decode at Domenico=E2=80=99s EbNaut decoder I transmitted all night=

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

use the files he is recording a= nd check for the transmission

=C2=A0

f =3D 137485.000 Hz
Start time: 20.SEP.2018=C2=A0 19:00:00 UTC up to 05:30:00 UTC (message star= ting at minute 00 and 30 every hour)
Symbol period: 2s
Characters: 3
CRC bits: 19<= /span>
Coding 16K21A

The message is =E2=80=9CDOM=E2= =80=9D, so if anyone wants to correlate the received signal and get some ex= tra dBs. This is extremely

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

=C2=A0

There was no decode at Domenico= =E2=80=99s grabber

https://www.qsl.net/iz7slz/EBN= AUT/DECODED.TXT

=C2=A0

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

=C2=A0

73 de Luis=

EA5DOM

=C2=A0

--000000000000119c69057671f5dc--