Hi Roger,
You can speed up the first line in the spectrogram after restart
(but it's cheating).
By default the program waits until enough samples have been
collected to calculate a 'complete' FFT. At uHz resolution, this
naturally takes ages (well, theoretically 1 / freq-resolution).
Here's how to cheat: Select 'options', 'FFT settings', and set the
checkmark for 'zero-pad if not enough samples available'.
Pro: You can see a bit faster if all works as it should.
Con: Spectrogram will look very blurred initially (as long as the
input to the FFT is padded).
Details and an explanation is here:
http://www.qsl.net/dl4yhf/speclab/settings.htm#zero_padded_FFT
Hope this helps,
73, Wolf .
Am 10.03.2011 09:57, schrieb Roger Lapthorn:
Once my PC got itself updated and SL running again I
was monitoring for DJ8WX in 424uHz BW overnight. There was a weak
trace visible, possibly with a gap in the middle of the night (or
was this QSB?), but nowhere near as strong as the last time Uwe
tested. At best the signal was maybe 4-6dB over noise. The trace
attached (LF reflector only) covers the period between about
2300-0730z.
I will continue to monitor until around 1200z but have to close
the PC for a couple of days as we will be away.
73s
Roger G3XBM
--
g3xbm-qrp.blogspot.com/
www.g3xbm.co.uk
www.youtube.com/user/g3xbm
G3XBM GQRP 1678 ISWL G11088
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