Beware of the very high voltages between the strands.
Stefan mentioned up to 30kV loading coil voltage, I guess even a fraction of this voltage will cause arcing between the strands
In addition the high stray capacitance will reduce the Q.
73, Rik ON7YD
All vlf men
Instead of winding miles of single strand insulated wire to achive the required inductance, use instead insulated multi strand wire and series the strands, normally the individual strands have coloured insulation and convenient
to connect in series.
also
gather up all the ferrite cores you can find put into a suitable container and insert into coil.
The above idea might save some coil winding time.
another thouight while I am composing
Litz wire.
Get hold of some old Decca coils ( I have a couple) find the beginning and end and do the same as above, this however is more difficult although individually insulated they are all the same colour, but with a meter to identify
each strand it can be done
de mal/g3kev
