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Once more, Paul Nicholson is showing a good
trace:
... well done!
Markus
Sent: Saturday, November 26, 2011 4:33 PM
Subject: Re: VLF: 8970 Hz transmissions, soon again
here
Stefan,
around 15:00, your sig on 8970.008 was visible
in Nuernberg, peaking ~ 20 dB SNR in 0.48 mHz.
Viel Glück,
Markus (DF6NM)
Sent: Saturday, November 26, 2011 3:57 PM
Subject: Re: VLF: 8970 Hz transmissions, soon again
here
VLF,
I'm now running 350W into the system and get
about 0.8 A antenna
current. Strong audible partial discharges occurr on a
parallel fixed
plate capacitor, spaced by 3 cola bottles (0.33l ;-) ). At
550 mH i have
25 kV rms on the antenna and coil which seems to be no problem
at all.
The frequency is still a bit unstable since i took the DDS VFO
which is
more comfortable to find the resonance. I will now try to slightly
QRO
and then apply a fiber optic cable carrying the GPS locked frequency
coming from the PC/SpecLab, hopefully without to many phase glitches.
Currently i may have an offset of some 20...30 mHz and a slight drift
but it is a first successfully test :-)
73,
Stefan/DK7FC
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