Ciao Jean Marie ,
I can publish the
drawings when I can find somewhere the sketch of them that I have to search in
my chaos ....
My order is quite statistical ...
The system is now buried on the ground ,and I can't take
it off , but it is simply the FGM-3 with
a divider /8 HMOS and a 3 pin stabilizer ( 78L05) .
Power supply and signal output travel on the same RG58
cable.
Power supply is fed and extracted with two standard
Impedance driven to resonance to the capacity of the cable and an additional
capacitor .
At the output of the inserter there is a transformer for
galvanic insulation, being the FGM-3 in the garden and the server with SL in
the lab that is around 50 m far .
The transformer is resonated too , so at the end the
signal is more similar to a sinusoid than the square wave generated from the
FGM-3 and then divided .
The power inserter is a double stage stabilizer .
One 12 V linear stabilized power supply followed by a
78L08 .
I can also take out the settings of spectrum LAB in the
two format that you can use : .usr or .ini .
Please forgive me if I also drive this message to the VLF
group and the blog .
I have received broadly many other request to have the
same that you asked .
Here you can find some real pictures of what I broadly. described
:
The second stage of stabilization was inserted after the
pictures to improve frequency drifting .
I have contact with Renato Romero quite daily ...
73-Claudio Re
-----Messaggio originale-----
Inviato: domenica 14 settembre 2014 08:51
Oggetto:
Ciao Claudio, very interesting indeed ! do you have a
schematic how you wired the sensor ? I have the same one and will do the test.
Also can you send me the configuration of Spectrum (you have probably a txt
file with it ?
really interesting !
you know
www.vlf.it ?
send the info to Renato he will be pleased
73's
JM
--
Jean Marie POLARD
F5VLB
