Hello Luis,
Thanks for the update. I am in the
midst of starting to think about winding a loading
coil for the 50 foot vertical in
the front yard.
What is the revolutions per minute
of your rotary table ?
What speed are you most
comfortable with ?
I am also thinking of a nested
"bucket brigade" for a tunable loading coil.
My initial thought was to use a
lathe and I built up a jig to horizontally hold the 5 gallon plastic
bucket.
Unfortunately I could not get the
speed low enough to allow me to comfortably wind the single layer coil.
The lathe has a DC motor and the
DC drive board could not be adjusted low enough. I think I need about
0-20 RPM. 0.02mm solid wire is
about a #32 AWG or a #36 British WG, rated at ~ 90 milliamperes.
My initial thought was to use a
wide double sticky tape at about 4 locations on the bucket, about 90
degrees apart.
I am also considering a tape over
the entire coil after winding to hold everything in place.
Another thought is a clear UV
proof epoxy over the entire coil, to hold in place.
My concern is the derating of the current due to the
reduced dissipation of heat in the covered coil.
Back to the drawing board..... My coil winding will
start with #22 AWG from a 4.4 Kg spool.
Stan, W1LE Cape Cod FN41sr
On 2/18/2019 7:20 AM, VIGILANT Luis
Fernández wrote:
Hi Stefan, VLF
The "Tricotosa" works nicely. Added a pedal to activate the motor, which is very useful
