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Re: VLF: Long time transmission on earth antenna

To: [email protected]
Subject: Re: VLF: Long time transmission on earth antenna
From: Stefan Schäfer <[email protected]>
Date: Tue, 09 Nov 2010 22:18:04 +0100
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Hi Gerhard,

Oh, disabling the internal filter may reduce the SNR by several dB! You are in 594 km distance, this is not trivial ;-) Maybe you can record the whole session as an audio file and reprocess it later on the "new" PC? I thinkk this does not take much CPU load, just some disk space that will be back after you got the optimised capture and deliting the file then...
73, Stefan

Am 09.11.2010 22:03, schrieb Gerhard Hickl:
Hi Stefan!

No, I wasn't meant that urgently...I just thought about leaving a
message to the reflector before leaving home...

I already have tried your config file on the "old" notebook and so far
it seems to bear with it! I disabled the filter and the all the other
stuff and connected the Spectrum-Analyser to "L1" instead, otherwise I
just saw red symbols in the "component-view".

This "raw" output is uploaded to my grabber-page in a 15 Minute
interval. I will use the time tomorrow, before you start your
transmission to calibrate the colour and brightness settings.

gl

OE3GHB
Gerhard




Am Dienstag, den 09.11.2010, 21:21 +0100 schrieb Stefan Schäfer:
Hello Gerhard,

Am 09.11.2010 20:33, schrieb Gerhard Hickl:
Would be nice if you could inform us on the reflector, shortly before
you begin your transmission.

Sorry, but i have no internet on the hill, just as in Darmstadt. Let's
hope i can receive the GPS there in the forest! But you will see my
signal on my grabber.  It will be visible in DFCW-60,maybe even in
DFCW-3. Never mind if you loose some minutes!
Maybe its better to start the PC before you go to work since it takes a
long time until the first pixel is shown. This makes it easier to adjust
the color scale later when the signal appears... Just how you want :-)
Looking forward to your experiment

Mee to :-) Thank you.

73, Stefan

PS: I have arranged a window of the supplied usr file at
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
It is already running!






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