Seco Systems
TORNADO TUNER©

The Tornado Tuner©  is a
precision variable inductor
that can be remotely
adjusted.   This patented
system varies the inductance
by mechanically expanding and
contracting a coil and has no
wiper contacts to short or wear
out.  
The Tornado Tuner© was
developed out of a need to
expand the useable bandwidth
of 1/4 wave 80 meter dipole
antennas.  The Tornado
Tuner© is available for both
Dipole antennas as well as
vertical antennas.  Custom
versions can also be built for
your application.
The Tornado Tuner© Model 8040S on a prototype vertical
antenna for 80/40 meters.
MADE IN THE USA!
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Website updated 11/08/09