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Hello
Stefan,
thanks
for the experiment,unfortunataly nothing seen on the screen,
73
Victor
PA3FNY
Dear LF/VLF group,
It took a long time
to get a proper wind forecast in a time sector where i can do a kite
experiment. Also it took a long time to get the special permission for the new
kite antenna.
But now, if the wind will be enough and if there is no
rain on Sunday, the 1. August, i will make a new kite
experiment.
The first time i will try to use a 200m vertical antenna
and 600W TX power. The L of the loading coil will not be reduced in this
experiment and so i will transmit at arround 6,5 kHz, the 46 km or 47 km
band! This is since i do not yet know the actual antenna C (EZNEC says 972
pF). The ERP will be arround 16 mW (first estimation). This is about 10
dB more than in the first and successful 2nd experiment on March, 15th. Also
it is said that propagation on 6 kHz is even better than on 9 kHz! The first
time it could be realistic to reach the 1A antenna current
mark!
Since some weeks i have set up a grabber in DFCW-120 mode
(just to cover a broader frequency range) at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
If you want to catch my signal, you can look there where i am actually
transmitting. After some resonating tests i will transmit in good old
DFCW-600, so it is the best you use a 3...5 mHz FFT and about 1 minute per
pixel.
Starting time is 8 UTC, maybe some time later since it is
the first experiment with such an antenna! I still do not know if big problems
will occur but i am a DREAMER (remembering the 3rd experiment: http://abelian.org/vlf/ss100321/
). But don't be disappointed if it would be failed. Actually it cannot fail
since there will be found improvements for the next test!
TX QTH is as
usual in JN49IS, 49.77647N 8.699525.
The summer time and maybe day time
may be not the best but it is an important test for the winther period. Maybe
we will see some surprises depending propagation on arround 6 kHz. And it will
be the first time that an amateur reaches the far field and hopefully more
than 1 Lambda on such a low frequency :-)
Any RX reports and
ideas/hints (before and after the test) are very appreciated!
Best 73,
Stefan/DK7FC *excited*
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