Return-Path: X-Spam-DCC: paranoid 1002; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_50_60,HTML_MESSAGE,SPF_PASS,UNPARSEABLE_RELAY autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u9FJ0jxW010874 for ; Sat, 15 Oct 2016 21:00:45 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1bvU98-0006QA-5u for rs_out_1@blacksheep.org; Sat, 15 Oct 2016 19:57:26 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1bvU97-0006Q1-Ny for rsgb_lf_group@blacksheep.org; Sat, 15 Oct 2016 19:57:25 +0100 Received: from omr-m001e.mx.aol.com ([204.29.186.1]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1bvU94-0006zu-Ft for rsgb_lf_group@blacksheep.org; Sat, 15 Oct 2016 19:57:24 +0100 Received: from mtaomg-mcd01.mx.aol.com (mtaomg-mcd01.mx.aol.com [172.26.223.207]) by omr-m001e.mx.aol.com (Outbound Mail Relay) with ESMTP id 0EB6B3800094 for ; Sat, 15 Oct 2016 14:57:20 -0400 (EDT) Received: from core-acb04f.mail.aol.com (core-acb04.mail.aol.com [172.27.24.4]) by mtaomg-mcd01.mx.aol.com (OMAG/Core Interface) with ESMTP id 64FD538000082 for ; Sat, 15 Oct 2016 14:57:19 -0400 (EDT) Received: from 188.192.95.60 by webprd-m15.mail.aol.com (10.74.54.114) with HTTP (WebMailUI); Sat, 15 Oct 2016 14:57:18 -0400 Date: Sat, 15 Oct 2016 14:57:19 -0400 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <157c9b49a54-1112-6781@webprd-m15.mail.aol.com> In-Reply-To: MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [188.192.95.60] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1476557840; bh=CzGTX7PkUPGSQIBOxysJjKFUlZh7QCwFzYQmIaCC2QA=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=Se7DavSU2t+QJZ9eN/vhN5tq7g5TX0rU1B58FjGEQlf56dC+K7S0wOOfix9uZ5cou ykB2IehDlYOqgB9EPlNOXDMitqJbOZceekSPKM3nXWhLtHqsSOVbgqHeHAmd70kf6w 9tKE+s/2MAfe62Sb/pcLqWWs1SSmVqTsZUzSTUJk= x-aol-sid: 3039ac1adfcf58027c0f4e5b X-Scan-Signature: 5624f0ff3acda0934438723229c028ec Subject: Re: LF: Idiot's guide to receiving Ebnaut? - Tutorial part1 Content-Type: multipart/alternative; boundary="----=_Part_34382_142031128.1476557838930" 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 X-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Content-Length: 13936 Status: O X-Status: X-Keywords: X-UID: 9096 ------=_Part_34382_142031128.1476557838930 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Stan,=20 filesize is 2.1 MB, a bit large for email. Please try this one first (right= click - save as): http://df6nm.bplaced.net/VLF/fec_tests/10111913.zip 73, Markus -----Urspr=C3=BCngliche Mitteilung-----=20 Von: Stan, W1LE An: rsgb_lf_group Verschickt: Sa, 15 Okt 2016 8:35 pm Betreff: Re: LF: Idiot's guide to receiving Ebnaut? - Tutorial part1 Markus, I tried again and this file opens into QTime in my browser and I can not sa= ve. It opens to a very short noisy burst. Can you send me the .WAV file directly. I am sure I have my PC/WIN7 OS set = up improperly to download the .WAV file. Thanks Stan, W1LE Cape Cod FN41sr On 10/15/2016 12:25 PM, Markus Vester wrote: Hi Tony,=20 downloading from the Dropbox link appeared to work fine here. Anyway I've = temporarily ftp-ed Stefan's file to http://df6nm.bplaced.net/VLF/fec_tests/= 10111913.wav , hope that might help out.=20 One minor note: Riccardo's transmission was announced and sent 0.6 milliHz= above nominal. Entering a frequency offset of -14.9994 instead of -15 Hz p= roduced a stronger and quicker decode. All the best, Markus=20 -----Urspr=C3=BCngliche Mitteilung-----=20 Von: Tony Baldwin An: rsgb_lf_group Verschickt: Sa, 15 Okt 2016 5:58 pm Betreff: Re: LF: Idiot's guide to receiving Ebnaut? - Tutorial part1 Stefan I can't seem to download the dropbox files, it just opens to a video playb= ack. Tony On 15/10/2016 11:58, DK7FC wrote: Hi all,=20 There must be some progress. I thought it could be useful to lern how to participate in EbNaut detectio= ns by doing 2 exercises. 1: Generating wav files that contain the message 2: Configure the EbNaut decoder to read the wav file successfully. Step 2 can be done today. First you need to download the decoder software at http://abelian.org/ebna= ut/ Then you need a wav-file containing a message. For this tutorial, you can = have a wav file that was generated on my PC. It contains even 2 messages (r= are!). Download the file from: https://dl.dropboxusercontent.com/u/19882028/LF/10= 111913.wav To decode a EbNaut message you have to know the start time, the symbol len= gth, the number of characters and the Coding. These informations are given = by the TX stn. Info for message 1: Am 11.10.2016 19:04, schrieb IZ7SLZ:=20 Hello LF, Riccardo IW4DXW informs that he also will be QRV EbNaut tonight on 137485.= 0006 Hz Message contains 31 characters transmitted at 0.5 s/sym, coding 8K19A, dur= ation 14'40'' each hour starting 19.00Z till 23.00Z . GL. 73, Domenico iz7slz My file contains the 19:00 UTC transmission. Info for message 2: Hello Group, considering the Stefan's request, i'm pleased to test again EbNaut today o= n LF with a 51 characters message, 8K19A code, 0.5 s/symbol, duration 22' 4= 0''. QRG =3D 137495.000 Hz Scheduled UT: at hour, starting from 19.00 'till 01.00 of 12-10-2016 (incl= uded). Carrier will be "on" 5 minutes before the transmissions. Now use the EbNaut decoder and select the wav file. For the first message = you can choose 31 characters, and 0.5 for the symbol period. Then press sta= rt, just for a few seconds, then stop again. You will now see some more inf= ormations: The RX freqency and the file start time. Now you can select the = frequency offset, which is -15 Hz. Type that into the field. The next thing is the timing offset. The start time is 18:54:22.340 and th= e message started 19:00:00. You need to know the timing offset precisely! I= f you don't get a decode, it is worth to vary the time offset a bit. A timi= ng offset could of course also come from the TX stn, sometimes unknown. Spe= cLab causes a time offset of 4 samples. You can also see the samplerate 117= .19/sec. So the timing offset is: (4S)/(117.19S/sec)+0.66sec+37sec+300sec = =3D 337.69 seconds. Type that into the start offset field. Now you can start the decoder and should get a decode quite quickly, depen= ding on your PC power. By changing just the number of characters and the frequency offset, you sh= ould receive the other message. Fine, that was part 1 :-) I need to get a feedback now if YOU got a successful decode or if there ar= e problems. Depending on that feedback i would then continue with part 2. Can someone of the 'newcomers' decode both messages? 73, Stefan ------=_Part_34382_142031128.1476557838930 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi Stan,

filesize is 2.1 MB, a bit large for&nbs= p;email. Please try this one first (right click - save as):
http://df6nm= .bplaced.net/VLF/fec_tests/10111913.zip

73, Markus

-----Urspr= =C3=BCngliche Mitteilung-----
Von: Stan, W1LE <stanw1le@verizon.net&= gt;
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt= : Sa, 15 Okt 2016 8:35 pm
Betreff: Re: LF: Idiot's guide to receiving Eb= naut? - Tutorial part1

Markus,

I tried again and this file opens into QTime in my browser and I can not save. It opens to a very short noisy burst.

Can you send me the .WAV file directly. I am sure I have my PC/WIN7 OS set up improperly to download the .WAV file.

Thanks   Stan, W1LE   Cape Cod   FN41s= r


On 10/15/2016 12:25 PM, Markus V= ester wrote:
Hi Tony, 

downloading from the Dropbox link appeared to work fine here. Anyway I've temporarily ftp-ed Stefan's file to http://df6nm.bplac= ed.net/VLF/fec_tests/10111913.wav , hope that might help out. 

One minor note: Riccardo's transmission was announced and sent 0.6 milliHz above nominal. Entering a frequency offset of -14.9994 instead of -15 Hz produced a stronger and= quicker decode.

All the best,
Markus 



-----Urspr=C3=BCngliche Mitteilung-----
Von: Tony Baldwin <ei8jk@topmail.ie>=
An: rsgb_lf_group <rsgb_lf_grou= p@blacksheep.org>
Verschickt: Sa, 15 Okt 2016 5:58 pm
Betreff: Re: LF: Idiot's guide to receiving Ebnaut? - Tutorial part1

Stefan
I can't seem to download the dropbox files, it just opens to a video playback.
Tony


On 15/10/2016 11= :58, DK7FC wrote:
Hi all,

There must be some progress.
I thought it could be useful to lern how to participate in EbNaut detections by doing 2 exercises.
1: Generating wav files that contain the message
2: Configure the EbNaut decoder to read the wav file successfully.

Step 2 can be done today.
First you need to download the decoder software at http://abelian.org/ebnaut/
Then you need a wav-file containing a message. For this tutorial, you can have a wav file that was generated on my PC. It contains even 2 messages (rare!).
Download the file from: https://dl.dropboxusercontent.com/u/19882028/LF/= 10111913.wav
To decode a EbNaut message you have to know the start time, the symbol length, the number of characters and the Coding. These informations are given by the TX stn.
Info for message 1:
Am 11.10.2016 19:04, schrieb IZ7SLZ:
Hello LF,<= br> Riccardo IW4DXW informs that he also will be QRV EbNaut tonight on 137485.0006 Hz
Message contains 31 characters transmitted at 0.5 s/sym, coding 8K19A, duration 14'40'' each hour starting 19.00Z  till 23.00Z .
GL.
73, Domenico iz7slz

My file contains the 19:00 UTC transmission.
Info for message 2:

Hello Group,

considering the Stefan's request, i'm pleased to test again EbNaut today on LF with a 51 characters message, 8K19A code, 0.5 s/symbol, duration 22' 40''.
QRG =3D 137495.000 Hz

Scheduled UT: at hour, starting from 19.00 'till 01.00 of 12-10-2016 (included). Carrier will be "on"  5 minutes before the transmissions= .

Now use the EbNaut decoder and select the wav file. For the first message you can choose 31 characters, and 0.5 for the symbol period. Then press start, just for a few seconds, then stop again. You will now see some more informations: The RX freqency and the file start time. Now you can select the frequency offset, which is -15 Hz. Type that into the field.
The next thing is the timing offset. The start time is 18:= 54:22.340 and the message started 19:00:00. You need to know the timing offset precisely! If you don't get a decode, it is worth to vary the time offset a bit. A timing offset could of course also come from the TX stn, sometimes unknown. SpecLab causes a time offset of 4 samples. You can also see the samplerate 117.19/sec. So the timing offset is: (4S)/(117.19S/sec)+0.66sec+37sec+300sec =3D 337.69 seconds. Type that into the start offset field.
Now you can start the decoder and should get a decode quite quickly, depending on your PC power.

By changing just the number of characters and the frequency offset, you should receive the other message.

Fine, that was part 1 :-)
I need to get a feedback now if YOU got a successful decode or if there are problems. Depending on that feedback i would then continue with part 2.
Can someone of the 'newcomers' decode both messages?

73, Stefan




=20
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