Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 8D2BD380000B6; Sun, 6 Jan 2013 10:31:19 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Trs5H-0007eJ-9t for rs_out_1@blacksheep.org; Sun, 06 Jan 2013 15:24:23 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Trs5G-0007dN-Jw for rsgb_lf_group@blacksheep.org; Sun, 06 Jan 2013 15:24:22 +0000 Received: from imr-da05.mx.aol.com ([205.188.105.147]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1Trs5D-0001S5-Qf for rsgb_lf_group@blacksheep.org; Sun, 06 Jan 2013 15:24:21 +0000 Received: from mtaout-db05.r1000.mx.aol.com (mtaout-db05.r1000.mx.aol.com [172.29.51.197]) by imr-da05.mx.aol.com (Outbound Mail Relay) with ESMTP id 2219D1C000052 for ; Sun, 6 Jan 2013 10:23:58 -0500 (EST) Received: from Black (188-194-147-142-dynip.superkabel.de [188.194.147.142]) by mtaout-db05.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 117FDE000083 for ; Sun, 6 Jan 2013 10:23:56 -0500 (EST) Message-ID: <136706CCD8084CB6AEB0E8B993435EC2@Black> From: "Markus Vester" To: References: <871180718.807959.1357202851097.JavaMail.open-xchange@email.1und1.de> <8CFB7BD49F0E58C-6E8-60E@webmail-d164.sysops.aol.com> <4D45055C381D4BECA4B1BEF1254E1059@Black> <004a01cdec0e$965b1020$0201a8c0@marco09cqcdi12> <006001cdec14$0a0c9430$0201a8c0@marco09cqcdi12> In-Reply-To: Date: Sun, 6 Jan 2013 16:23:51 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6000.16480 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16669 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20121107; t=1357485838; bh=qFjddQ2bs+H96ywJ8b2oR2CjtD7hCclQuZ2jbr4hDII=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=ihJGC0IWVT2EM669V+/e3m52d41Zfu+mRdqPCcnIQ+W2BkiSVPZM8cAcpoY+65X9h O6T0K4qBYouFazjbcurmQrF8KIx/7ntS0Pu1vZHs78xfXGmUpSEO3zQukTn4iptXgk wzRrDNa/PkruYDP+cV0XtAt5fjxYVKV0mgWhKKyQ= X-AOL-SCOLL-SCORE: 0:2:421717792:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Now it's 15:20, and I'll put the filtered SSB back on for a while. "Dial" frequency is 136.0 kHz. The antenna is still not dry so ERP is down by a couple of dBs. 73, Markus ----- Original Message ----- From: Markus Vester To: Sunday, January 06, 2013 3:12 PM Subject: LF: Re: Re: Re: Bandlimited SSB test on 136 kHz [...] 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 [205.188.105.147 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 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: 405bb9dcd45b6481736dcdaf249e9285 Subject: LF: Re: Re: Re: Re: Bandlimited SSB test on 136 kHz Content-Type: multipart/alternative; boundary="----=_NextPart_000_0054_01CDEC2A.370B6E50" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.7 required=5.0 tests=HTML_40_50,HTML_FONTCOLOR_BLUE, HTML_MESSAGE,MISSING_OUTLOOK_NAME 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 x-aol-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mtain-ma01.r1000.mx.aol.com ; domain : mx.aol.com DKIM : fail X-AOL-OVERRIDE-PIK-REASON: Y x-aol-sid: 3039ac1d600950e998c7212f X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_0054_01CDEC2A.370B6E50 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Now it's 15:20, and I'll put the filtered SSB back on for a while. = "Dial" frequency is 136.0 kHz. The antenna is still not dry so ERP is = down by a couple of dBs. 73, Markus =20 ----- Original Message -----=20 From: Markus Vester=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Sunday, January 06, 2013 3:12 PM Subject: LF: Re: Re: Re: Bandlimited SSB test on 136 kHz Thanks very much Marco and Terry for trying, and to Klaus DJ6LB who = sent a nice recording from 20 km. I have stopped transmitting at 13:50 = due to onsetting rain, but may resume an hour later if the weather lets = me. Terry the slow-voice stuff still needs a litte more work. I will be = happy to share it once it runs a bit more reliably. And despite my = scepticism, I would indeed be interested to team up with Geri and others = to try FreeDV on low bands. Best 73, Markus (DF6NM) ----- Original Message -----=20 From: Terry GW0EZY=20 To: Markus DF6NM=20 Sent: Sunday, January 06, 2013 2:54 PM Subject: RE: Bandlimited SSB test on 136 kHz Hi Markus=20 I am always interested in new communications experiments! =20 I listened for your test transmission at 13:30 but, unfortunately, = heard nothing. I=E2=80=99ve used my SDR-IQ to record the spectrum so I = can analyse off-line in more detail later.=20 Although I am not yet in a position to Tx on 136 kHz, I will try to = monitor your slow SSB tests if you would like to make the software = available. =20 I know you do not fancy using DV but just to mention that I have had = some success (on HF) with FreeDV. This uses a recently developed = opensource CODEC and has an 1100 Hz BW.=20 73 and GL with the tests. =20 Terry GW0EZY=20 ----- Original Message -----=20 From: Marco Cadeddu=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Sunday, January 06, 2013 2:45 PM Subject: LF: Re: Re: Bandlimited SSB test on 136 kHz Sorry Markus... I see from your grabber that you started.. but nothing here to = hear..just a steady tone on 137.5 will qsy back on 472 wspr (rx only!) 73 de Marco, IK1HSS ----- Original Message -----=20 From: Marco Cadeddu=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Sunday, January 06, 2013 1:06 PM Subject: LF: Re: Bandlimited SSB test on 136 kHz Hi Markus, stucked of bad cnd on 472 (Stefan arrives irregularly with -30 dB = S/N....) I'm now in rx usb on 136=20 GL 73 Marco, IK1HSS ----- Original Message -----=20 From: Markus Vester=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Sunday, January 06, 2013 12:50 PM Subject: LF: Bandlimited SSB test on 136 kHz Dear LF, around midday I have been conducting some test transmissions = using 136.0 kHz USB voice. To comply with German regulations, the audio = spectrum has been cut off sharply below 300 Hz and above 1100 kHz, = occupying 136.3 to 137.1 kHz RF. Despite this rather mediocre speech = quality, it is still possible to hear the voice and copy a simple = message.=20 To my surprise, the speech was quite audible on the Twente = WebSDR (434 km), squeezed between the bursts of DCF and HGA. There's a = recording and screenshot at http://www.df6nm.bplaced.net/LF/ssb/ Of course it does get boring speaking only to myself ;-). If = you'd like to listen yourself, I intend to do another test transmission = starting 13:30 this afternoon. As the audio is realtime and standard SSB = (apart from the filtering), no software postprocessing is needed.. Slow voice transmission (ie the audio deceleration/acceleration = method originally used by DK8KW and myself) would be nicer as it can fit = a full SSB channel into 800 Hz. I have been working on a semi-automatic = control, with a fixed one minute raster similar to JT9-1. This will = hopefully allow us to comfortably exchange one 20 second voice message = per time slot (speak during seconds 0 to 20, concurrent transmit and = receive at 1/3 speed from 0 to 60, replay starting 40 to 60). Anyone = interested? Best 73, Markus (DF6NM) ... ------=_NextPart_000_0054_01CDEC2A.370B6E50 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
Now it's 15:20, and I'll put the = filtered SSB=20 back on for a while. "Dial" frequency is 136.0 kHz. The antenna is still = not dry=20 so ERP is down by a couple of dBs.
 
73, Markus
 
----- Original Message -----
From:=20 Markus=20 Vester
Sent: Sunday, January 06, 2013 = 3:12=20 PM
Subject: LF: Re: Re: Re: = Bandlimited SSB=20 test on 136 kHz

Thanks very much Marco and Terry for = trying, and=20 to Klaus DJ6LB who sent a nice recording from 20 km. I have = stopped=20 transmitting at 13:50 due to onsetting rain, but may resume an = hour later=20 if the weather lets me.
 
Terry the slow-voice stuff still = needs a litte=20 more work. I will be happy to share it once it runs a bit more = reliably. And=20 despite my scepticism, I would indeed be interested to team = up with=20 Geri and others to try FreeDV on low bands.
 
Best 73,
Markus (DF6NM)
 
 
 
----- Original Message -----
From:=20 Terry=20 GW0EZY
Sent: Sunday, January 06, 2013 = 2:54=20 PM
Subject: RE: Bandlimited SSB = test on 136=20 kHz

Hi=20 Markus 
I=20 am always interested in new communications=20 experiments!
 
I=20 listened for your test transmission at 13:30 but, unfortunately, heard = nothing. I=E2=80=99ve used my SDR-IQ to record the spectrum so I can = analyse off-line=20 in more detail later. 
Although=20 I am not yet in a position to Tx on 136 kHz,  I will try to = monitor your=20 slow SSB tests if you would like to make the software=20 available.
 
I=20 know you do not fancy using DV but just to mention that I have had = some=20 success (on HF) with FreeDV. This uses a recently developed =  opensource=20 CODEC and has an 1100 Hz BW. 
73=20 and GL with the tests.
 
Terry=20 GW0EZY
 
----- Original Message ----- =
From:=20 Marco=20 Cadeddu
To: rsgb_lf_group@blacksheep.org= =20
Sent: Sunday, January 06, = 2013 2:45=20 PM
Subject: LF: Re: Re: = Bandlimited SSB=20 test on 136 kHz

Sorry Markus...
I see from your grabber that you = started.. but=20 nothing here to hear..just a steady tone on 137.5
 
will qsy back on 472 wspr (rx=20 only!)
 
73 de Marco, IK1HSS
----- Original Message ----- =
From:=20 Marco=20 Cadeddu
To: rsgb_lf_group@blacksheep.org= =20
Sent: Sunday, January 06, = 2013 1:06=20 PM
Subject: LF: Re: = Bandlimited SSB test=20 on 136 kHz

Hi Markus,
 
stucked of bad cnd on 472 (Stefan = arrives=20 irregularly with -30 dB S/N....) I'm now in rx usb on 136 =
 
GL
73 Marco, IK1HSS
----- Original Message ----- =
From:=20 Markus=20 Vester
To: rsgb_lf_group@blacksheep.org= =20
Sent: Sunday, January 06, = 2013=20 12:50 PM
Subject: LF: Bandlimited = SSB test=20 on 136 kHz

Dear LF,
 
around midday I have=20 been conducting some test transmissions using = 136.0 kHz=20 USB voice. To comply with German regulations, the audio=20 spectrum has been cut off sharply below 300 Hz and = above=20 1100 kHz, occupying 136.3 to 137.1 kHz = RF. Despite this=20 rather mediocre speech quality, it is still possible = to hear=20 the voice and copy a simple message. 
 
To my surprise, the = speech was quite=20 audible on the Twente WebSDR (434 km), = squeezed between the=20 bursts of DCF and HGA. There's a recording and screenshot=20 at
http://www.df6nm.bplaced.ne= t/LF/ssb/
Of course it does get boring = speaking only=20 to myself ;-). If you'd like to listen yourself, I intend to do = another=20 test transmission starting 13:30 this afternoon. As the = audio is=20 realtime and standard SSB (apart from the filtering), no = software=20 postprocessing is needed..
 
Slow voice = transmission (ie=20 the audio deceleration/acceleration method originally used = by DK8KW=20 and myself) would be nicer as it can fit a full SSB = channel=20 into 800 Hz. I have been working on = a semi-automatic=20 control, with a fixed one minute raster similar to JT9-1. = This will=20 hopefully allow us to comfortably exchange one 20 second voice = message=20 per time slot (speak during seconds 0 to 20, concurrent=20 transmit and receive at 1/3 speed from 0 to 60,=20 replay starting 40 to 60). Anyone interested?
 
Best 73,
Markus (DF6NM)
...
   
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