Oh yes, let us all make a MEGA activity on LF tonite, just like the last
weekend on MF. That was really fine and impressing for all involved, i
assume.
Markus, Albert, Roland, Roger, Eddie, where are you? :-)
73, Stefan/DK7FC
Am 16.10.2012 19:37, schrieb Stefan Schäfer:
LF,
Does someone join in on LF WSPR? There are many active RX stations!
Eddie/G3ZJO, what about you? Your results have been good on MF. On LF
the ERP will be 10 dB lower (ish) if the TX pwr is the same but i
expect that you will have quite good chances in the groundwave range.
There is a very high LF/MF and digimode appliance operator density in
the UK ;-) Also in Germany and the Netherlands and France. It looks
like we (these countries) make the highest density of active LF/MF
amateurs in the world, except Tokyo city of course :-)
73, Stefan/DK7FC
Am 16.10.2012 15:48, schrieb George Szymanski:
You never know Stefan I might get a weak trace from you overnight!
I'm too stupid to use Spec lab!
I will try the Twente receiver but my internet is so very slow it
might not work well enough.
73 de George, DU1GM
On Tue, 16 Oct 2012 15:20:29 +0200, you wrote:
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
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