[TowerTalk] 43' vertical mod for true resonance on 80M
Rick Karlquist
richard at karlquist.com
Tue Feb 17 20:33:41 EST 2009
Mark Robinson wrote:
> I am planning something like this. What sort of capacitor do you need to
> use
> as the series feeding element.......a vacuum capacitor?
>
>
> Mark N1UK
I use WWII surplus "transmitting mica" caps. If you want to make
the antenna tunable, you can switch in various fixed caps. A vacuum
variable typically doesn't have enough capacitance, and in any
event, you don't need the high voltage rating.
Rick
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