On Fri, 12 Apr 2019, DK7FC wrote:
For future tests it would be useful to have a grabber window on your side,
showing 1...3 kHz in one spectrogram. It would be just to see how and when
the QRN/M starts and when it has its minimum at night. Can you set up
something like that?
I can try, but the pc that is doing the rx and the spectrograms already
uses almost all of the cpu. Unfortunately i had to switch the clock to
800MHz, because of some problem with cooling.
Maybe i will switch to doing the calculations and storage on another
machine, but i will have to think of some reliable way to get the data
there, that would survive a wifi dropout.
And what about Marcin? Maybe you can build up a RX site at his QTH. Close to
the sea, it may be a bit quieter than in the city(?). And if he has a garden,
there may be a place with a clean ground...
Marcin SQ2BXI lives in the city too, also in a 4-story building, and also
has a noisy location. We already had a wideband grabber there, and the
S/N wasn't great. But it's a good idea to have a grabber there anyway, the
more the better.
I also want to try another location about 40km from Warsaw with two
crossed loops (e-field won't work there because it's in the forest). Maybe
that will be better.
VY 73
Jacek / SQ5BPF
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