BTW Joe,
Would you set up a VLF grabber / monitoring station on your side to
receive signals from DL? It is a bit easier i think, no pilot tones and
such stuff. Direct reception with a simple soundcard. You will however
need to build a preamp and low pass filters and such stuff...
73, Stefan
Am 28.12.2016 21:59, schrieb DK7FC:
Am 28.12.2016 19:00, schrieb [email protected]:
PS Stefan's coil is very compact. 0,4 mm wire? Hope it can take the
kV!
Hi Joe,
Yes, 0.4mm wire. The voltage is not the problem for the wire. But the
tube is out of PVC and the length of the winding is about 0.3m. So it
will be about 1kV/cm which could be problematic if the inner side of
the tube becomes wet, inhomogeneous wet. This could cause strong local
E field strength which leads to arcing on the surface. Arcing on the
surface makes the surface conductive, a self accelerating process that
can be repaired. This is the high risk of this construction! It has
its advantages and disadvantages. It will handle 700 mA RF current, at
least now in winter :-) But i should take care to keep it as dry as
possible. We will see what happens.
73, Stefan
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