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
<[email protected] <mailto:[email protected]>>
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: [email protected] <mailto:[email protected]>
To: [email protected]
<mailto:[email protected]>;
[email protected] <mailto:[email protected]>
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 <[email protected]
<mailto:[email protected]>> 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.
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