Return-Path: X-Spam-DCC: paranoid 1170; 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=-2.0 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_30_40,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 u23CGZOH017715 for ; Thu, 3 Mar 2016 13:16:35 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1abS5l-0002ew-AC for rs_out_1@blacksheep.org; Thu, 03 Mar 2016 12:10:53 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1abS5k-0002en-U6 for rsgb_lf_group@blacksheep.org; Thu, 03 Mar 2016 12:10:52 +0000 Received: from omr-m020e.mx.aol.com ([204.29.186.20]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.86) (envelope-from ) id 1abS5i-0000fs-CY for rsgb_lf_group@blacksheep.org; Thu, 03 Mar 2016 12:10:51 +0000 Received: from mtaomg-aam01.mx.aol.com (mtaomg-aam01.mx.aol.com [172.27.19.147]) by omr-m020e.mx.aol.com (Outbound Mail Relay) with ESMTP id 187BE38000BB for ; Thu, 3 Mar 2016 07:10:48 -0500 (EST) Received: from core-acd02d.mail.aol.com (core-acd02.mail.aol.com [172.27.22.12]) by mtaomg-aam01.mx.aol.com (OMAG/Core Interface) with ESMTP id A4C6E38000081 for ; Thu, 3 Mar 2016 07:10:47 -0500 (EST) Received: from 192.35.17.16 by webprd-a35.mail.aol.com (10.72.109.38) with HTTP (WebMailUI); Thu, 03 Mar 2016 07:10:46 -0500 Date: Thu, 3 Mar 2016 07:10:46 -0500 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <1533c633101-75f8-6ea5@webprd-a35.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: [192.35.17.16] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1457007048; bh=3Rv5ITUPSrctxFpXAYWscTDu/adIz8KEf1WVtC1clHI=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=JeQAY13YDSqApTc9/Rt+A3JgOYx0w8Pw7LAxXKc13A95RAb8VmsOKLJkCvXZPky7U jcqeCtImGIB9DAFsIEA1xzd62Pl267Up5XFFfWprrd9NCnktqbEHmwS05pNfvXwypO 3BSVard1KBlJVD5Bgx0RaQmBwhwm6DeCHsjEgBV4= x-aol-sid: 3039ac1b139356d829c776f2 X-Scan-Signature: 58ba09640deeac370be75328ed1b0fef Subject: Re: LF: MF: EbNaut Content-Type: multipart/alternative; boundary="----=_Part_36647_1020747846.1457007046911" 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 Status: O X-Status: X-Keywords: X-UID: 7185 ------=_Part_36647_1020747846.1457007046911 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Joe, last night propagation between us was unusally stable and very strong until= ~ 5 UT: https://dl.dropboxusercontent.com/u/26404526/opds8.png The FFT bandwidth had been halved to increase the aquisition time for your = longer transmissions.=20 "G. MARCONI" VO1NA, 477700Hz, 4K19A, 10char, 752*2s=20 Wed/Thu 2016-03-02/03 start car. sym. offs. UT dB dB mHz 23:30 11.9 7.9 0=20 00:00 12.9 10.0 -1.5 00:30 16.1 13.6 -1.5 01:00 11.6 8.3 -1 01:30 16.9 14.2 -0.6 02:00 10.7 8.3 -0.6 02:30 17.9 14.4 -0.6 03:00 14.1 10.8 -0.6 03:30 5.7 4.4 -0.8 04:00 5.2 5.1 -0.8 04:30 3.6 4.0 -0.8 Compared to yesterday, I think the much larger SNR is mostly due to more st= able phase rather than longer symbols. I found that still had to individual= ly tweak the frequency offset in small steps, starting EbNaut several times= and watching the decode quality after the first linear-phase trials, as we= ll as the dots in the rawsyms phase plot. =20 Generally on MF shorter much shorter symbols may be preferable. I believe t= hat for such coherent and un-referenced signaling, there should be an optim= um total message duration which is related to the inverse of the propagatio= nal Doppler spread. If that is typically 10 or 20 mHz, only a couple of min= utes may be best. Hope that Domenico may have been able to break our distance record. Using p= honons instead of photons might be too much of a challenge though ;-) Best 73, Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung-----=20 Von: jcraig An: rsgb_lf_group Verschickt: Mi, 2 Mrz 2016 11:43 pm Betreff: Re: LF: MF: EbNaut Hi Markus and thank-you for your patience and coaching. I was only there to put your ideas into practice. I feel bad for making Paul's record so short lived, but very grateful for= =20 his software and guidance. Well lets go for 2 seoond symbols tonight and hope that enough phonons=20 will reach Italy tonight. 73 and many thanks Markus and Paul Joe On Wed, 2 Mar 2016, Markus Vester wrote: > Joe, > > > you've made it! Despite significant propagational spread, your message "G= . MARCONI" was successfully decoded six times in Nuernberg. > > > Wed. 2016-03-02 > start car. sym. offs. > UT dB dB mHz > 00:00 2.5 1.6 -3 > 00:30 2.2 0.8 0 > 01:00 2.1 0.8 -2 > 01:30 0.8 0.0 -1 > 02:00 nil 0 > 02:30 nil 0 > 03:00 3.3 2.5 -1 > 03:30 3.4 3.0 -1 > 04:00 nil +1 > 04:30 nil 0 > > > Thank you for your photons, and for your patience! > > > All the best, > Markus (DF6NM) > > > > > -----Urspr=C3=BCngliche Mitteilung----- > Von: jcraig > An: rsgb_lf_group > Verschickt: Di, 1 Mrz 2016 8:45 pm > Betreff: Re: LF: MF: EbNaut > > > Well Done! > > The photon flux is on: 477.7 kHz, EbNaut parameters as before > (10 chars 8K19A 752 1-second symbols starting on the half hours UT) > Hope you have better luck if you want to try again, Markus. > > 73 > Joe VO1NA > > On Mon, 29 Feb 2016, Markus Vester wrote: > >> Congratulations to Paul and Domenico, this is a well deserved cup of tea= ! >> >>> Maybe that is the farthest EbNaut on MF so far? >> I think so. Actually the other day I had tried hard to decode VO1NA here= , but never managed to pull enough of Joe's photons out of the noise. >> ------=_Part_36647_1020747846.1457007046911 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi Joe,

last night propagation betw= een us was unusally stable and very strong until ~ 5 UT:
 https://d= l.dropboxusercontent.com/u/26404526/opds8.png
The FFT bandwidth had been= halved to increase the aquisition time for your longer transmissions.

"G. MARCONI"
VO1NA, 477700Hz, 4K19A, 10char, 752*2s
Wed/Thu 2016-03-02/03

start  car. sym. offs. UT    dB   dB   mHz
23:30 11.9=   7.9   0
00:00 12.9  10.0 -1.5
00:30 16.1 = 13.6 -1.5
01:00 11.6  8.3  -1
01:30 16.9 14.2  -0.602:00 10.7  8.3  -0.6
02:30 17.9 14.4  -0.6
03:00 14= .1 10.8  -0.6
03:30  5.7  4.4  -0.8
04:00  5= .2  5.1  -0.8
04:30  3.6  4.0  -0.8

Compared to yesterday, I think the much larger SNR is mostly due = to more stable phase rather than longer symbols. I found that still had to = individually tweak the frequency offset in small steps, starting EbNaut sev= eral times and watching the decode quality after the first linear-phase tri= als, as well as the dots in the rawsyms phase plot. 

Hope that Domenico may have be= en able to break our distance record. Using phonons instead of photons migh= t be too much of a challenge though ;-)

Best 73,
Ma= rkus (DF6NM)



-----Urspr=C3=BCngliche Mitteilun= g-----
Von: jcraig <jcraig@mun.ca>
An: rsgb_lf_group <rsgb_= lf_group@blacksheep.org>
Verschickt: Mi, 2 Mrz 2016 11:43 pm
Betre= ff: Re: LF: MF: EbNaut

Hi Markus and thank-you for your patien= ce and coaching. I was only there
to put your ideas into practice.
<= br>I feel bad for making Paul's record so short lived, but very grateful fo= r
his software and guidance.

Well lets go for 2 seoond symbols t= onight and hope that enough phonons
will reach Italy tonight.

73= and many thanks Markus and Paul
Joe

On Wed, 2 Mar 2016, Markus V= ester wrote:

> Joe,
>
>
> you've made it! Despi= te significant propagational spread, your message "G. MARCONI" was successf= ully decoded six times in Nuernberg.
>
>
> Wed. 2016-03-0= 2
> start car. sym. offs.
> UT dB dB mHz
> 00:00 = 2.5 1.6 -3
> 00:30 2.2 0.8 0
> 01:00 2.1 0.8 -2
&g= t; 01:30 0.8 0.0 -1
> 02:00 nil 0
> 02:30 nil = 0
> 03:00 3.3 2.5 -1
> 03:30 3.4 3.0 -1
> 04:= 00 nil +1
> 04:30 nil 0
>
>
> Tha= nk you for your photons, and for your patience!
>
>
> All= the best,
> Markus (DF6NM)
>
>
>
>
> -= ----Urspr=C3=BCngliche Mitteilung-----
> Von: jcraig <jcraig@mun.ca>
> An: rsgb_lf_group <rsgb_lf_group@blacksheep.org<= /a>>
> Verschickt: Di, 1 Mrz 2016 8:45 pm
> Betreff: Re: LF:= MF: EbNaut
>
>
> Well Done!
>
> The photon f= lux is on: 477.7 kHz, EbNaut parameters as before
> (10 chars 8K19A 7= 52 1-second symbols starting on the half hours UT)
> Hope you have be= tter luck if you want to try again, Markus.
>
> 73
> Joe = VO1NA
>
> On Mon, 29 Feb 2016, Markus Vester wrote:
>
= >> Congratulations to Paul and Domenico, this is a well deserved cup = of tea!
>>
>>> Maybe that is the farthest EbNaut on MF= so far?
>> I think so. Actually the other day I had tried hard to= decode VO1NA here, but never managed to pull enough of Joe's photons out o= f the noise.
>>
------=_Part_36647_1020747846.1457007046911--