Hi Joe,
Unfortunately Martin cannot receive this night. The PC is crashed down.
We will have fixed it tomorrow i think.
Sri...
73, Stefan/DK7FC
Am 09.05.2012 00:49, schrieb [email protected]:
Thanks Stefan (and also to Dex for getting Martin's grabber images. )
Yes, SA is continent 4, and still trying to reach the southern
hemisphere!
QRV again tonight. 4.7 Amps to a 100m wire at 15m.
73
Joe
On Tue, 8 May 2012, Stefan Schäfer wrote:
Hi Dex, Joe, Martin, LF,
Congratulations for the new continent Joe!! Is that your 4th?
Dex, sunrise in YV is arround 10 UTC these days.
There is a problem with the dropbox upload. An error massage comes
up. We will have to work on that today. However the Teamviewer link
worked and so i was able to see the ongoing SpecLab instances. XKO
was way stronger than yesterday, a clear O copy! We'll publish the
screenshots later. Probably there was also a stronger copy of VO1NA
and maybe others as well. Very interesting changing conds. Also the
wideband window is very interesting i find. It clearly shows that the
noise is 15...20 dB above the RX+soundcard noise on each frequency in
the LF band.
Tnx to the US+CA stns for providing LF amateur signals. That is
definitively helpful to get impressions about the path and understand
the grabber as a useful device! My first mail to Martin with the idea
for a common LF project is dated *March, 29th*. And here we are! :-)
We'll go on to play with an active E field antenna which may reduce
the loacl QRM a bit. Currently a 80m long wire is used for reception.
It is about 5m above the ground in average. One part is close to the
house. By analyzing a wav file taken in YV i saw in a fast scrolling
spectrogram that there is still significant local QRM between the
massive sferics.
Also i think with this wav file it may be possible to find more
suitable settings for the noiseblanker. While the NB settings in DL
or EU are optimised to reduce the QRM of DCF39, there may be more
efficient settings for YV which concentrate on the sferics! So maybe
we can get another dB or even 2?
Lastly we're having first thoughts about constructing a loop antenna,
maybe one which is sililar to the K9AY type...
73, Stefan/DK7FC
Am 08.05.2012 14:11, schrieb Dexter McIntyre W4DEX:
John Andrews wrote:
Joe,
It wasn't WD2XES -- I was only on from 0115 to 0200. I believe
that's an "O", probably from WD2XKO. The frequency calibration on
that screen looks a little high.
XKO was on. QRT at 1200 hrs. Sunrise time at Martin's QTH?
Dex
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