On Sun, 28 Dec 2008 19:31:13 -0500, Joe Subich, W4TV wrote:
Jim Brown said:
>> Au contrair! See work by N6LF, which strongly suggests
>> that there are resonance effects, especially with only
>> a few radials.
>The only resonance effects occur when the radial system is
>insufficient to provide a proper return. No matter the
>length of the radials, when there are enough radials that
>the spacing between the ends is less than the 0.03 wave
>rule of thumb. A four or eight radial system is never
>going to behave a non-resonant (on/in ground system).
Yes. That's what I said -- "especially with only a few
radials." I'd bet that the vast majority of radial systems
consist of 4-8 radials. Remember that most hams live on
small lots. Yes, I have 60+ radials, average 75 ft, some
longer. I also have a couple of 500+ ft Beverages. But I
had to get to age 65 and 52 years of hamming, to have real
estate that allowed that. I'd bet that fewer than 1% of
hams can come close.
73,
Jim K9YC
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