[TowerTalk] Large Loop Antenna - Electrostatically Shield Loops

[David Gilbert]

... and why is that you need to go to all that extra effort to achieve 
perfect balance in a transmitting loop?  I still don't get it.

Dave  AB7E


Frederick M. Mott wrote:
> Bill, the answer to your question is in Chapter 5 of the ARRL 20th edition
> of the ARRL Antenna Book.  The nonmagnetic shield is "to maintain loop
> balance with respect to ground, by forcing the capacitance between all
> portions of the loop and ground to be identical".  By maintaining the
> electrical loop balance is to eliminate what is referred to as the antenna
> effect.  You can read on and learn a lot.  Sometimes theory works when you
> put it to a practical use, sometimes it doesn't.  I am just want a good loop
> antenna and I am sure someone has tried it and I want to know of their
> experience and results.  Fred
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Bill Turner
> Sent: Tuesday, April 24, 2007 2:28 PM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] Large Loop Antenna - Electrostatically Shield Loops
>
> ORIGINAL MESSAGE:
>
> On Tue, 24 Apr 2007 12:32:48 -0400, KC1DI <davekc1di at gmail.com> wrote:
>
>
>   
>> Well I've used Electrostatically Shielded loops in the past but they
>> have always been for Receive only.
>>     
>
> ------------ REPLY FOLLOWS ------------
>
> Changing the subject slightly, what is it exactly you are shielding
> the loop from? I have heard of electrostatically shielded loops but
> never quite understood the need for shielding. Can you explain?
>
> Thanks,
>
> Bill W6WRT
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