> I've been wondering the same thing myself. It depends on if
> the centers of the parasitic elements are grounded to the boom
> or not.
>
> In either case, for maximum top loading the SteppIR antenna
> would have to be set for its lowest frequency.
>From what I saw when they were in Orlando, the elements are not
grounded ... other than the driven element which is connected
the balun/unun and the coax shield.
You might ask them how to ground the parasitic elements since
they do use the same housing, etc. for the verticals.
> A friend uses a roof-mounted SteppIR vertical for 40-10m with
> three radials for each band and works lots of DX with it but
> unfortunately they don't have a model to cover 80 and 160m.
They are supposedly working on a version with switched coils
for 80 meters (haven't heard about 160).
73,
... Joe, K4IK
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