Return-Path: X-Spam-DCC: paranoid 1233; 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 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 u04LAtsc004798 for ; Mon, 4 Jan 2016 22:10:55 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aGCL6-0008Th-9A for rs_out_1@blacksheep.org; Mon, 04 Jan 2016 21:06:52 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aGCL5-0008TY-MO for rsgb_lf_group@blacksheep.org; Mon, 04 Jan 2016 21:06:51 +0000 Received: from mail-wm0-f45.google.com ([74.125.82.45]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86) (envelope-from ) id 1aGCK0-0007Td-T4 for rsgb_lf_group@blacksheep.org; Mon, 04 Jan 2016 21:06:50 +0000 Received: by mail-wm0-f45.google.com with SMTP id l65so642145wmf.1 for ; Mon, 04 Jan 2016 13:05:33 -0800 (PST) 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=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=iLNk0HPPmkq+uSze7f/bu7f5oPrvldYoKMlZYksVeys=; b=TCv2FVn/ZooJFE3W8Ia0KHllMlWvSaLSEppIGYPggUSqLpFqP2XlMWrMhEQD5C0ZkR BooyLpdpk65ZTy56UnqWH99wrsb4vmVk8o9GqHuzcjrqdJ+y1FzrR6Die8eDlAxXyuwG wftYwqxbX4ezGVX1bAxdHOhtIo4HMVa0m+sRAxCT7q0Bh6+Ip0aRozgDRHhRV+e1HoNx pxoJmyzflLamtgxQunI83gGYPAwW32QD7TGeqKV6dPCBK40kRZH3486V184J3kv9vkfA ldGZspRD/NMT0ohrLeIqlaM0diVq+Mb8PecDWpgvNhHgdowWtO6aOo710uZE2k2luGFx fLbg== MIME-Version: 1.0 X-Received: by 10.28.51.135 with SMTP id z129mr405625wmz.19.1451941533008; Mon, 04 Jan 2016 13:05:33 -0800 (PST) Received: by 10.28.150.6 with HTTP; Mon, 4 Jan 2016 13:05:32 -0800 (PST) In-Reply-To: References: <568A4048.4000001@vsas.de> <568A7620.7010506@gmx.de> <568AC4A5.4030407@charter.net> Date: Mon, 4 Jan 2016 21:05:32 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Scan-Signature: 18c242620d7d7b91a1caf5740aa3e326 Subject: Re: LF: DL-SWL and WOLF Content-Type: multipart/alternative; boundary=001a1144424e4f4e850528887bdd 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 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 6117 --001a1144424e4f4e850528887bdd Content-Type: text/plain; charset=UTF-8 Yeeeess... It is a bit dated isn't it. Based on 11025 sampling rate, that'll give the old early WSJT soundcard calibration issues all over again. And only appears to give soundcard output. I do have an upconverter, but that needs I/Q drive and doubt the software generates that, so a phasing network needed. Direct digital drive to to be able to control my Gaussian ramped PSK source would have been better. Will take another look anyway - but I can see why its not used much here now... Andy On 4 January 2016 at 20:13, Laurence KL7 L wrote: > WOLF(s) can still be heard from here in Alaska !- and got to be honest I > run the Decca directly at full chat direct from my HB transverter - but > never had complaints about spreading though I didn't have a lot of locals > even then in NE Oklahoma. > > It was and still is a fine mode and the Gui model is easish to run as > long as you calibrate it correctly, even for me. > > Im not sure there have been a lot of qso's but with John TAGs permission > heres how ours went down a few years back (ok more than a few years now) as > XDW my previous part 5 license over a 2100Kms plus path - Im still able to > run it from here...the gear is the same here as it was in 2003/5 > > http://www.w1tag.com/XDWQSO.htm > > > Laurence KL7L WE2XPQ > > > > > ------------------------------ > Date: Mon, 4 Jan 2016 19:38:45 +0000 > From: andy.g4jnt@gmail.com > To: rsgb_lf_group@blacksheep.org; rsgb_lf_group@yahoogroups.co.uk > Subject: Re: LF: DL-SWL > > Indeed - > What happened to WOLF (*) ? > > I've just tried Googling (**) it and find practically no hits. The data > mode seems to have been used successfully in the years around 2001 and on, > for a bit, but has faded. The URL I had for it is now gives the magic > 404. Didn't the first transatlantic contact on 137kHz use this mode? > > I guess that as it used 10 baud BPSK, was considered too complicated for > the average LF Op. to generate. No one seems to use upconversion from > audio, and few seem to be able to make simple PSK encoders. Even for > EBnaut, relays are suggested as the means to reverse the phase (yes, > truely !!). I suppose, to be fair, 10 baud unfiltered BPSK from a high > power transmitter is a bit unkind to other band users. > > Andy G4JNT > > (*) Weak signal Operation at LF > (**) Other search engines are available - so it has been said. > > > On 4 January 2016 at 19:14, John Andrews wrote: > > For those who may be newer to this part of our hobby, Hartmut Wolff is > somewhat of a legend in receiving TA signals in the 137 kHz band. Night > after night while others could only see Loran lines and the debris from > DCF39, Hartmut produced screenshots of some pretty weak North American > signals. He also gave reports on the sadly-orphaned WOLF mode. As recently > as last month, his 137.780 kHz grabber showed my signal on nights that it > was invisible on the UK and other DL grabbers. > > --001a1144424e4f4e850528887bdd Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Yeeeess...

It is a bit dated isn't = it. =C2=A0 =C2=A0Based on 11025 sampling rate, that'll give the old ear= ly WSJT soundcard calibration issues all over again.=C2=A0 And only appears= to give soundcard output.=C2=A0 I do have an upconverter, but that needs I= /Q drive and doubt the software generates that, so a phasing network needed= .=C2=A0 Direct digital drive to to be able to control my Gaussian ramped PS= K source would have been better.

Will take another= look anyway - but I can see why its not used much here now...
Andy



On 4 January 2016 at 20:13, Laure= nce KL7 L <hellozerohellozero@hotmail.com> wrot= e:
WOLF(s) can still=C2=A0be heard from here in Alaska != - and got to be=C2=A0honest I run the Decca directly at full chat direct fr= om my HB transverter - =C2=A0but never had complaints about spreading thoug= h I didn't have a lot of=C2=A0locals even then in NE=C2=A0Oklahoma.
= =C2=A0
=C2=A0It was and still is a fine mode and the Gui model is easish= to run as long as=C2=A0you calibrate it correctly, even for me.
=C2=A0<= br>Im not=C2=A0sure there have been a lot of qso's but with John TAGs p= ermission heres how ours went down a few years back (ok more than a few yea= rs now) as XDW my previous part 5 license=C2=A0over a 2100Kms plus path - I= m still able to run it from here...the gear=C2=A0 is the same here as it wa= s in 2003/5
=C2=A0
http://www.w1tag.com/XDWQSO.htm
=C2=A0
=C2=A0
Laur= ence KL7L=C2=A0 WE2XPQ
=C2=A0
=C2=A0

=C2=A0
Date: = Mon, 4 Jan 2016 19:38:45 +0000
From: andy.g4jnt@gmail.com
To: rsgb_lf_group@blacksheep.org<= /a>; r= sgb_lf_group@yahoogroups.co.uk
Subject: Re: LF: DL-SWL

Indeed -=C2=A0
What happened to WOLF =C2=A0(*) ?
<= br>
I've just tried Googling (**) it and find practically no = hits.=C2=A0 The data mode seems to have been used successfully =C2=A0in the= years around 2001 and on, for a bit, but has faded. =C2=A0 The URL I had f= or it is now gives the magic 404.=C2=A0 Didn't the first transatlantic = contact on 137kHz use this mode?

I guess that as i= t used 10 baud =C2=A0BPSK, =C2=A0was considered too complicated for the ave= rage LF Op. to generate. =C2=A0 No one seems to use upconversion from audio= , and few seem to be able to make simple PSK encoders. =C2=A0 Even for EBna= ut, relays =C2=A0are suggested as the means to reverse the phase (yes, true= ly !!). =C2=A0 =C2=A0I suppose, to be fair, 10 baud unfiltered BPSK from a = high power transmitter is a bit unkind to other band users.

<= /div>
Andy =C2=A0G4JNT

(*) Weak signal Operati= on at LF
(**) Other search engines are available - so it has been= said.


On 4 January 2016 at 19:14, John A= ndrews <w1tag@charter.net> wrote:
For those who may be newer to this part of our hobby,= Hartmut Wolff is somewhat of a legend in receiving TA signals in the 137 k= Hz band. Night after night while others could only see Loran lines and the = debris from DCF39, Hartmut produced screenshots of some pretty weak North A= merican signals. He also gave reports on the sadly-orphaned WOLF mode. As r= ecently as last month, his 137.780 kHz grabber showed my signal on nights t= hat it was invisible on the UK and other DL grabbers.

<= /div>

--001a1144424e4f4e850528887bdd--