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Dear Wolfgang, Daniele, LF,
thanks Wolfgang for the hint about turning off
periodic actions.
There are actually three configuration
files in
so some explanation is probably on
order:
- 9kHzWide.usr has 0 to 24 kHz on the
top and around 9 kHz at the bottom, with 1.46 Hz FFT resolution and 1
second scrolling. It's meant to give a quick overview of the band, eg.
to optimize antenna coupling. You shold see the big MSK signals,
and three lines of tiny dots on the Alpha frequencies. But this
setting is too fast to see a weak signal.
- 9kHz_slow2_white is the original 15.3 mHz
setting, with the 8.97 kHz area at the top and 11.905 at the bottom. It
scrolls at 10 seconds, and you can read QRSS 60 or slower keying. Beware there
is an offset (0.30 Hz and 0.0397 Hz) on the frequency scales, which I
had used to correct for my "white" notebook's samplerate offset. But
this will certainly be different on other machines, so I would
recommend to reset those offsets to zero, and use the samplerate
calibration entry in SpecLab's audio settings tab instead.
- 9kHz_4mHz.usr is the
one currently displayed on the lower part of my grabber. It has a more
sensitive 3.8 mHz FFT and 1 minute scrolling. Again, you should delete the Freq1
and Freq2 offsets and enter your samplerate.
Good luck to Stefan and all,
Markus
----- Original Message -----
Sent: Saturday, April 03, 2010 9:05
AM
Subject: Re: R: VLF: 4th VLF experiment
by DK7FC/p
Hi Daniele,
> Interested in the SpecLab
configuration file :-)
> Could it be made available via web link or
e-mail?
> Many thanks
> Daniele
>
>
A
high-res spectrogram configuration is available on DF6NM's VLF grabber site
(at the bottom). But I guess you already found that one ;-)
After
loading Markus' 4-mHz-config, be sure to turn the Periodic Actions off,
because they invoke a batch file to upload a screenshot via FTP, which almost
certainly doesn't exist on your machine ;-)
73, Happy Easter and GL
all,
Wolf DL4YHF .
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