Hi George,
There is no chance for you to display normal WSPR from me over that
distance in a spectrogram. Maybe you could display WSPR-32 but this is
still to optimistic i think. We really have to start in something like
QRSS-120 or DFCW-180 and then see what comes out.
I have no idea how to set Argo for optimal displaying DFCW-180 since i
don't use the new version of the program. Furthermore i am very
convinced by using Spectrum Lab for LF/MF detection. Yes, the program is
much more complex but it offers some essential features! The band
limiting and noise blanking will reduce the QRN very significantly! The
improvement can vary from a few to 10 dB, depending on the kind of
noise. I will try to generate a new spectrogram soon, showing this effect.
I don't know if Argo allows noise cancelling. But if you loose say 6 dB
SNR, that makes a difference from invisible to O copy.
Did you try the Twente WEB SDR link i sent you? This is also useful to
check if the reference signal you're using is available at present. I'm
daily listening to AM BCD stns for many hours a day :-)
As said, if you like i can give you some advice how to run a DCF-plot.
73, Stefan/DK7FC
Am 16.10.2012 15:03, schrieb George Szymanski:
Hi Stefan,
As you say we need DCF39 back again!
I have only seen a couple of short transmissions from JA7NI.
No other ham signals seen from JA or UA0 so far.
I think the LF season here is still early anyway.
What's the best Argo setting to detect your WSPR signal?
I just have it set on QRSS3 for the time being, maybe slower would be
better.
I sometimes listen to 198kHz to see if I can see the BBC. There is
something there but I cannot ID it positively.
73 de George
On Tue, 16 Oct 2012 14:49:58 +0200, you wrote:
Hello George,
Thank you.
Please tell me, did you get more experience about the best transmit
times from EU to your location? Is JA7NI still transmitting for you or
was it just a short test?
I tried some time to appear on your grabber but there was no success so
far. Maybe there was QRN or the times were not optimal.
Do you have any suggestions?
It's hard to evaluate this path without having a DCF-39 plot (knowing
the NBW) or some first traces from here. BTW, it seems the EU-autumn
season to VK is over now. But you are "just" in 2/3 of the distance and
even in the northern hemisphere, so things may become a bit better..
73, Stefan
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