[Moon-net] Need advise on SDR+Winrad+WSJT

[Lars Malmrud]

Hello Gabriel,

I received my SDR-IQ last week and made some initial tests during the ARRL 
contest. The performance was very promising and I look forward to make 
further experiments with this little magic box. I was however unable to run 
both program on the same computer due to an extremely long time for 
decoding. A 1,8GHz computer with 512 MB RAM is far to slow. Signals down 
to -24dB was easily detected on the waterfall and probably can even weaker 
signals been discovered after an optimazation of the sofwareparameters.
I also discovered the frequencyoffset but I belive it must be like this as 
the software center to the carrierfrequency of the viewed signal.


73´s de
Lars SM5TSP


----- Original Message ----- 
From: "Gabriel - EA6VQ" <ea6vq_ml at vhfdx.net>
To: "Lista-MoonNet" <moon-net at list-serv.davidv.net>
Sent: Friday, November 02, 2007 10:32 AM
Subject: [Moon-net] Need advise on SDR+Winrad+WSJT


> I'm considering buying an SDR-IQ to begin experimenting with SDR for JT65B
> EME.   My idea would be to use Winrad (or might be the Windows version of
> Linrad) running ON THE SAME PC that WSJT (using the "Virtual Audio Cable"
> software to reroute the audio output of Winrad to WSJT).
>
> What's you opinion about this configuration?  Should it work properly,
> provided that the PC is fast enough?
>
> I have already tried this configuration (taking the audio signal from my
> normal SSB receiver, as I still don't have any SDR) and the rerouting of 
> the
> audio is working, although I have noticed a poblem that I don't know how 
> to
> solve. When I click on a signal in Winrad, the audio passed to WSJT is not
> what the program expects, but it's passed in a much lower frequency.  I 
> have
> to click (in Winrad) much to the left of the signal (sync tone) so that 
> the
> audio passed to WSJT is what WSJT needs (this is, a sync tone around 1300
> Hz).
>
> Any ideas?
>
> 73. Gabriel - EA6VQ
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