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From: Tobias DG3LV <DG3LV@gmx.net>
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Date: Tue, 5 Jan 2016 00:10:21 +0100
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Subject: Re: Re: LF: DL-SWL and WOLF
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Status: O

Hi Andy !

> I do have an upconverter, but that needs I/Q drive and doubt the software generates that,
What about trying to use the good old M0KGK SDR program in between as an 
I/Q generator from the audio source.
(This is my setup : softrock rxtx6.2 + M0KGK 1.1.0.64, works ufb at my 
side since 2012)

73 de dg3lv Tobias

Am 04.01.2016 um 22:05 schrieb Andy Talbot:
> 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
> <hellozerohellozero@hotmail.com <mailto:hellozerohellozero@hotmail.com>>
> 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 <mailto:andy.g4jnt@gmail.com>
>     To: rsgb_lf_group@blacksheep.org
>     <mailto:rsgb_lf_group@blacksheep.org>;
>     rsgb_lf_group@yahoogroups.co.uk <mailto: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 <w1tag@charter.net
>     <mailto: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
>         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.
>
>