Bill, W6WRT wrote:
> ORIGINAL MESSAGE:
>
> On Sat, 20 Mar 2010 01:10:33 -0400, Roger <sub1@rogerhalstead.com>
> wrote:
>
>
>> All of those antennas but one will have the
>> wire diameter while the one man out will have the disk diameter.
>>
>
> REPLY:
>
> True, but the LENGTH of the disk is tiny. I don't think the length
> would have any significant effect at the frequencies we are talking
> about. Capacitance, yes.
>
That's why other than the capacitive loading it'll add little to the
overall results. Instinctively one would expect it to add twice the
radius to the length of the antenna, but it effectively adds a short
length of a much larger diameter that will have little effect in the
overall summation.
73
Roger (K8RI)
> 73, Bill W6WRT
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