[TowerTalk] Re: Radials over salt water

[Bill Coleman]

On 1/10/01 15:35, Tom Rauch at w8ji@contesting.com wrote:

>> Thinking and analyzing the situation, there should
>> be improvement if using many (>60) elevated (or on ground) radials vs. few
>
>Fact Yuri. When the radials are less than .025 to .05  wl apart at 
>the open ends, they look like a solid screen. Using more radials 
>than that is a waste of wire.

Hmm. 1/4 wave radials means a circle of 1/2 diameter. That's a perimeter 
of pi/2 wavelength, which divided by .05 yeilds about 31 radials. 
Similarly, .025 spacing at the ends is about 63 radials.

If >63 radials is like a solid screen, I wonder why there's so much in 
the amatuer literature about installations with 120 or so radials.

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr@arrl.net
Quote: "Not within a thousand years will man ever fly!"
            -- Wilbur Wright, 1901


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