Re: [TowerTalk] 43' vertical mod for true resonance on 80M

["Rick Karlquist" <richard@karlquist.com>]

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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