Hi Daniele, LF,
Am 06.10.2010 12:34, schrieb Daniele Tincani:
I
don't want to annoy you and the LF/VLF group with all these detailed
questions, anyway I noticed that bits/sample is set to 16, while my
soundcard perform much better of course at 24 bits/sample. Must the 16
bits/sample setting be retained the for long-term observation?
Regards
Daniele
I am not sure, just try what happens.
One cannot be sure is those questions/answers are nerving to the group
but maybe there is someone else who ist doing the same tests
(auricularly ;-) ) and can lern something about this software and
improve the own RX performance! :-) It is just a mail that can be
deleted by one click, if nerving ;-)
73, Stefan
From:
Stefan Schäfer <[email protected]>
To:
[email protected]
Sent: Wed, October 6,
2010 10:24:33 AM
Subject: Re: VLF:
Inspire VLF-3 receiver
Hi Daniele,
Yes, adjust the B slider. But the QRM/QRN must be totally visible on
all frequencies. You can increase the input level but it's better to
leave it as you usually have it. It is better to change the range of
the visible spectrum, so click: options => audio settings =>
..(2) => increase the lower range to -120 dB if necessary. It's good
to cover 60...80 dB totally so make the same changes on the other side,
means if you have -80...-20 dB, go to -120...-60 dB. Additionally you
can adjust the B slider.
Or you may record a wav file and send it to me. Just click: file =>
audio files => save input as audio file => (choose a directory
and save about 10 seconds). Otherwise the size becomes to big. ;-)
73, Stefan
Am 06.10.2010 00:53, schrieb Daniele Tincani:
Hi Stefan,
> Adjust the color scale if necessary but don't change the
'C' (contrast) slider.
Do you mean I can adjust the Brightness control too? Or simply
select a different palette?
I'm testing the .usr and it results almost in a blank screen
(apart from lower frequencies) because of the fact that strongest
signals I see (for example RDL on 18100Hz) are all below -80dB, with an
overall noise floor around -110dB. In order to have some pixels
emerging from the dark, I have to increase the brightness of the
waterfall. Is it OK?
Otherwise, I could increase significantly the line input gain
in Windows. What is the preferred method?
Regards
Daniele
From:
Stefan Schäfer <[email protected]>
To: [email protected]
Sent: Tue, October
5, 2010 7:37:52 PM
Subject: Re: VLF:
Inspire VLF-3 receiver
Hi Daniele,
Am 05.10.2010 17:00, schrieb Daniele Tincani:
My reasoning is: I'm pretty sure :-) that I have hum at home
affecting reception below 10KHz.
Attached you find an usr file. Just let it run for some hours, maybe so
that the QRN minimum (in Gramany and Italy arround 8...10 UTC) is
visible. Than take a capture maybe at arround 17 UTC and show it here.
Adjust the color scale if necessary but don't change the 'C' (contrast)
slider.
We will see your QRN/QRM situation and how strong the Alphas are and
and and... Don't turn the antenna during the recording ;-)
Later (or before) you can check different antenna angles and check for
minimum QRM. You can switch on/off everything that may cause QRM in
your house. And you can try to find a quiter location...
73, Stefan
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