[Antennas] The Top Hat?

Wed, 1 Oct 2003 15:19:18 -0500

Mark,  "lumping" inductance to compensate for shortening an element
increases losses (we won't go into Q/efficiency etc!). If a condition for FR
is to have the respective XL and XC cancel out each other, an examination of
the formula for resonance makes it clear that adding "C" (with the top hat
in this case) results in less "L" for resonance.  Guess we could start from
there....?

I'm nota  guru, of which there are many here...ready to help us. No question
is too basic...many of us here want to understand the basics!

Yes, L.B Cebik is someone I can never praise enough ....and then there is
George and Harvey too!

73,
Ron

----- Original Message -----
From: AA6DX <[email protected]>
To: Donald E. "Buck" Stiles <[email protected]>; <[email protected]>
Sent: Thursday, October 02, 2003 2:24 PM
Subject: Re: [Antennas] The Top Hat?

> I would suggest trying cebik.com for info.   The top hat is a way of
> shortening verticals, or other antennas, using "capacity"  .   Works great
> on mobile aerials, too.   73, Mark  AA6DX
> Start here, perhaps --      http://www.cebik.com/linvert.html
> ----- Original Message -----
> From: "Donald E. "Buck" Stiles" <[email protected]>
> To: <[email protected]>
> Sent: Thursday, October 02, 2003 11:58 AM
> Subject: [Antennas] The Top Hat?
>
>
> > Hello All,
> >
> > What is the reason for adding a "TOP HAT" on a vertical antenna?
> >
> > Is it advantageous for both base and mobile antennae?
> >
> > Your kind help will assist me in preparing a report for our local club
> > meeting.
> >
> > tnx es 73 de n8csp k
> >
> >
> > - - -
> >
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> > Larry Wilson KE1HZ [email protected]
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>
>
> - - -
>
> Your moderator for this list is:
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