Hello Riccardo,
After seeing your email i (remotely) switched to the N-S loop on the tree.
Your signal is now well visible here in the 424 uHz window, see
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
The first time i see a trace on a VLF spectrogram from Italy here.
About 10 dB SNR.
73, GL, Stefan
Am 28.01.2018 11:47, schrieb Riccardo Zoli:
Hi VLF,
I'm running another carrier test on 8270.01953125 with about 600 mA
and 14 µW ERP.
To reach this current, I need about 290W on the PA output, currently
supplied with 62V and 5.5A.
There is a lot of power dissipated by the coil: a cooling fan is
absolutely necessary.
All the best
73 de Riccardo IW4DXW
2018-01-27 13:20 GMT+01:00 Riccardo Zoli<[email protected]>:
Hi Paul, Markus, VLF
thanks so much, Paul. I'm pleased to see my signal coming well on your RX.
Yes, I'm using your "magic" spectrogram which allows to make a wide
and accurate set of measures.
Now I'm QRT. In last days, I used Spectrum Lab only to monitor the
phase of the signal generated by GPSDO.
The PLL cfg still not working well here, even though I've implemented
the 1 PPS reference.
For your info, last carrier was produced with an antenna current of 580mA.
All the best
73 de Riccardo IW4DXW
2018-01-26 19:04 GMT+01:00 Paul Nicholson<[email protected]>:
Excellent signal from IW4DXW
http://78.46.38.217/fbins3.html#p=1516982400&b=125&s=sp&m=cardioid&w=h&h=62&z1=0.32&z2=0.62&c=1&mb=485,95,743,123,1
The amplitude is about the same as yesterday but the noise is lower.
It is always a pleasure to see a good quality signal, I do enjoy looking
at these spectra. I hope that others too are looking out for this nice
carrier from Riccardo.
--
Paul Nicholson
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