As others said, the EF180x design is swaged tubes with steep tapers and
thus pretty useless as a template for a wire antenna. (and hard to
model) I would measure the coil inductance, probably all that matters
since F12 likely has the SRF in an ok place. Then plug L into EZNEC and
find a placement that resonates with your total wire length. Might be a
good project for AutoEZ, especially if you include the tower model.
Grant KZ1W
Tornado tuned EF180C w/o LL @ 100ft
On 7/26/2020 21:22, Robert Harmon wrote:
Anyone have a manual for one of the Force 12 80M rotatable dipoles? Like the
EF-180S or similar ? I want the one with loading coils not the linear loaded
version.
I am thinking about duplicating one using antenna wire and I think I have the
Force 12 loading coils already. I am thinking about hanging it from the side
of my tower
to see how it performs as a vertical dipole.
thanks,
Bob
K6UJ
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