Return-Path: X-Spam-DCC: paranoid 1480; 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=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, 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 u7G9ljE4026538 for ; Tue, 16 Aug 2016 11:47:45 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1bZau1-0002vv-5M for rs_out_1@blacksheep.org; Tue, 16 Aug 2016 10:43:21 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1bZau0-0002vm-Jr for rsgb_lf_group@blacksheep.org; Tue, 16 Aug 2016 10:43:20 +0100 Received: from omr-a010e.mx.aol.com ([204.29.186.54]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1bZaty-0004uI-3g for rsgb_lf_group@blacksheep.org; Tue, 16 Aug 2016 10:43:19 +0100 Received: from mtaomg-aam02.mx.aol.com (mtaomg-aam02.mx.aol.com [172.27.19.148]) by omr-a010e.mx.aol.com (Outbound Mail Relay) with ESMTP id B7FE73800046 for ; Tue, 16 Aug 2016 05:43:15 -0400 (EDT) Received: from core-acb07c.mail.aol.com (core-acb07.mail.aol.com [172.27.24.7]) by mtaomg-aam02.mx.aol.com (OMAG/Core Interface) with ESMTP id 7638F38000083 for ; Tue, 16 Aug 2016 05:43:15 -0400 (EDT) Received: from 188.192.95.60 by webprd-m80.mail.aol.com (10.74.71.90) with HTTP (WebMailUI); Tue, 16 Aug 2016 05:43:15 -0400 Date: Tue, 16 Aug 2016 05:43:15 -0400 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <15692bbc829-47cf-1260@webprd-m80.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=1471340595; bh=k3FEEcVUoA28WeO9j6+BmwI1WKrC48KuoDFU7QMUBD4=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=p5KTgQCJw2p4EBC7ac8uROheGBX61CONaEU+W7HmbXOYp4gX8cWwbFRsZkyQXtudS tD9kDxG0JHrG15e+Q1nJoSS/hc8imFo7sbSHcQqZkUchI5IXJyUVaHiIJMHAMp2FNG 1v3vs+RyLHbmz5MQhhZdfjksPD86UNwFZH7xAcC4= x-aol-sid: 3039ac1b139457b2e0337fe7 X-Scan-Signature: ad8e5dd63f7497fd9d71d15044db2e2b Subject: Re: LF: EbNaut on LF Content-Type: multipart/alternative; boundary="----=_Part_5744_1211527366.1471340595239" 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: 8586 ------=_Part_5744_1211527366.1471340595239 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Joe, unfortunately I had not set up recordings in time so no data here for a dec= ode attempt. My LF-RX soundcard was also affected by a hiccup with swapped= E and H channels until 1:30 UT. Thereafter, your signal was well visible = as a +-5 Hz wide "noise band" around 137.777 kHz, so the 0.2 s EbNaut would= surely have been decodable with more than enough SNR. Apart from going for a "longest EbNaut sequence ever" type record, I'm aski= ng myself whether it would not be better to split a long message into sever= al shorter ones. This probably depends both the fading pattern and on the u= se-case, i.e. whether a partly reception is also valuable or completely wor= thless. For example, if the SNR (EbN0) was +2 dB for the first half and -2 = dB for the second, you'd probably still get the combined long message but only the first of tw= o short ones. On the other hand, if it was 0 dB and -4 dB, you'd get the fi= rst short message, but nothing at all with the long one. On the practical s= ide, shorter messages would be far less demanding on long-term phase stabil= ity, as well as CPU and memory. All the best, Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung-----=20 Von: jcraig An: rsgb_lf_group Verschickt: Di, 16 Aug 2016 2:47 am Betreff: Re: LF: EbNaut on LF QRG changed from 137.477 to 137.777 kHz at 0045 utc. Sorry for the mixup! 73 Joe Re: LF: EbNaut on LF=20 Von:jcraig An:rsgb_lf_group Datum:Di, 16 Aug 2016 1:26 am Dear Group, Reports of the OP32 sigs from R7NT, F5WK, Graham, Markus, Hugh, Stefan Dominico and others who I inadvertently left out are gratefully=20 acknowledged. Tonight by popular demand starting 2330 and every 15 mins, EbNaut 155 chars 0.2 seconds 771.2 s message duration, 4K19A polynomial. 500w 3.5A to the 100m RL. Reports most welcomed. Good luck to all. (Let's hope I've set it up correctly!) Joe VO1NA ------=_Part_5744_1211527366.1471340595239 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi Joe,

unfortunately I had not set up recor= dings in time so no data here for a decode attempt.  My LF-R= X soundcard was also affected by a hiccup with swapped E and H channel= s until 1:30 UT. Thereafter, your signal  was well visible as a&n= bsp;+-5 Hz wide "noise band" around 137.777 kHz, so the 0.2 s EbNaut would = surely have been decodable with more than enough SNR.
Apart from going for a "longest EbNaut sequence ever" type record, I'= m asking myself whether it would not be better to split a long message into= several shorter ones. This probably depends both the fading patt= ern and on the use-case, i.e. whether a partly reception is also valuable o= r completely worthless. For example, if the SNR (EbN0) was +2 dB for t= he first half and -2 dB for the second,
you'd probably still get th= e combined long message but only the first of two short ones. On the other = hand, if it was 0 dB and -4 dB, you'd get the first short message, but= nothing at all with the long one. On the practical side, sh= orter messages would be far less demanding on long-term phase sta= bility, as well as CPU and memory.

All the best,
Markus= (DF6NM)


-----Urspr=C3=BCngliche Mitteilung-----
Von: jcraig= <jcraig@mun.ca>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.or= g>
Verschickt: Di, 16 Aug 2016 2:47 am
Betreff: Re: LF: EbNaut on = LF

QRG changed from 137.477 to 137.777 kHz at 0045 utc. Sorry for t= he
mixup!

73
Joe
Re: LF: EbNaut on LF=09=09=09=09=09
Von:jcraig <jcraig@mun.ca>
An:rsgb_lf_group <rsgb_lf_group@blacksheep.org= >
Datum:Di, 16 Aug 2016 1= :26 am
Dear Group,
Reports of the OP32 sigs from R7NT, F5WK, Graham, Markus, Hugh, StefanDominico and others who I inadvertently left out are gratefully
acknow= ledged.

Tonight by popular demand starting 2330 and every 15 mins, E= bNaut 155
chars 0.2 seconds 771.2 s message duration, 4K19A polynomial. = 500w
3.5A to the 100m RL. Reports most welcomed. Good luck to all.
(= Let's hope I've set it up correctly!)

Joe VO1NA
------=_Part_5744_1211527366.1471340595239--