Hi Eddie,
Confirmed, that is my signal. I just stopped the carrier and send
DFCW-600 now. Try to receive it :-)
BTW interestingly my new CDF VLF grabber at
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
is not overloaded although the distance to the TX antenna is
30m, around the corner. Must have to do with the electrical TX antenna
and the magnetic RX antenna...
So this is a good monitor here, unfortunately for the phase glitches as
well :-/
I'm using exactly the same equipment, settings and configuration as in
the last test. Anyway the PC doesn't work now. This is why i had to do
it by the LF PC. But now i have an idea what could be the reason. I
installed winamp on that PC, for doing the WOLF tests. It is a very old
version of winamp from 2000 or so. There is a "winamp agent" that
automatically starts with the system. Maybe that causes trouble to the
USB soundcard (the internal soundcard has a LPF arround 8 kHz). I will
test that soon.
Eventually, if the wx and motivation holds on, i could run the TX for
another night, with a break for the daily LF evening transmission of
course...
73, Stefan/DK7FC
Am 17.03.2012 09:25, schrieb qrss:
Hi
Stefan
I think it must be your signal in my 600 window. The cursor shows
8970.006 but then again it wont show the .005 step with these settings.
Silly boy here set two 60000 windows and no 6000 so we missed out
overnight with 6000 grabs sorry.
** Note** Please Use http://dl.dropbox.com/u/23312120/vlfgrabber.html
my bplaced site is firing adverts.
73 Eddie G3ZJO
On 17/03/2012 02:17, Stefan Schäfer wrote:
The old Notebook that did such a good job in
the last VLF test seems to have a problem now. I had to switch to the
LF PC. Here it works but maybe some phas glitches occur here :-/ We'll
see. After that i intend to install a ready to use PC that is for
transmiting exclusively.
Since 2:00:00 UTC the transmission should be reasonable stable.
73, Stefan/DK7FC
Am 17.03.2012 01:14, schrieb Stefan Schäfer:
VLF,
Now the TX is running. No HV problems this time. I'm running 500W. The
coil current is close to 1A so the antenna current may be 850mA, 3 dB
more than in november 2011.
The frequency is 8970.0050 Hz, "locked" to GPS within SpecLab.
I'm going to transmit a loooooooooong carrier until 9 UTC or so. Then
i'll play arround a bit, depending on the results of local grabbers and
activity.
Reports apprechiated.
I thought about giving WOLF10 (or 5) a try, as an exception. DF6NM
would be the intended goal but everyone is invited to receive. If i
will try WOLF then i have to use an unlocked frequency, i.e. just using
the normal WOLF gui program. Anyway, at least no glitches on that 10
year old PC, hopefully.
73, GL, Stefan/DK7FC
PS: Odd, still 12 °C outside at 1 AM local...
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