Hello Felix,
While walking arround during the sunset here, i got a thought:
What about recording a 20 second long audio file (.wav for example) with
a sample rate of 48 kS/s or even 96 kS/s, centered on 475 kHz? You could
transfer it via the satellite link. You told me they have a 2 Mbps link,
so it seems to be no problem.
We could have a view into the spectrum and may get an impression about
the background noise, i.e. if there is some QRN or if it rather
looks/sounds like white noise. If possible, just provide a link where
one can download the file for inspection :-)
What do you think?
Aah and there was a second thought! :-) I know there is always a radio
amateur on board. Would it be possible to try alternative antennas? As i
have been in contact with DL1LLL in 2013, he told me they have a basic
electronic lab. Maybe they have a JFET and some resistors and
capacitors, you know... But i know, the WSPR decodes are used for that
project at the university so they won't like their data to get messed
up. Next summer, as you said.
Here on my tree where the Raspi is running i can remotely switch a
bipolar relais to switch between different antennas. For the next
project, this could be an idea maybe.
73, Stefan
RX running...
Am 08.03.2018 16:10, schrieb Felix Riess:
Hi everyone!
Just to be there right in time i would suggest to try starting 17 UTC.
If you can confirm that you will switch to 630m at that time, i will be
on air then.
By popular request (from a single person...) I have just switched the
RX at DP0GVN to 630m again. This means that there will be another full
night of LF reception in Antarctica from now until 0700 UTC on March
9. Please give it a try!
73, Felix (DL5XL/DP1POL)
-one of the DP0GVN crew-
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