Hi Edgar,
nice to read from you.
I thought about you today and asked myselfe what could be your current
situation regarding VLF reception (?)
Am 13.11.2017 21:36, schrieb edgar:
Hi Stefan,
Interesting, are you aiming for a high Q coil,
Well, you can call it high Q but in the first way the aim is a high L
that holds a high voltage. I need 56 H at that frequency, quite an
effort for hand wound air gapped coil :-)
With that load of material i can do many interesting experiments below
4 kHz...
If so what is the best geometry for
the coil for that frequency?
So far i took a mofied mains transformer which has a 1 mm air gap and
0.5 mm plates. At 5 kV / 15 mA antenna current it became quite warm
already. To make the next distance step i need 10 dB QRO or so. In the
end i should reach at least 30 kV, then i think Paul and DL0AO will be
able to receive me. No, no calculations!
73, Stefan
Regards, Edgar
Moonah, Tasmania.
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