[TowerTalk] new Steppir antenna
Rick Karlquist
richard at karlquist.com
Tue Oct 5 15:44:00 EDT 2004
Al Williams said:
> A relay switchable linear loaded wire to add use on 80/75 meters. I
> haven't done the calculations but expect that the range of the
> extendable elements would cover the entire band in conjunction with the
> linear loaded wire?
>
> What do you all think?
>
> k7puc
You would have to have a bunch of relays in the linear
loaded wire to make it disappear all the way to 54 MHz.
Having thought about schemes like this for a long time,
I would say it is not practical.
If you try to put loading coils at the feedpoint, the
dozens of pF of capacitance between elements (due to the copper
tape feed reel) is a showstopper, not to mention the
high voltage that would be present.
Rick N6RK
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