[TowerTalk] more - Precip static

[Tom Rauch]

> Date:          Tue, 05 May 1998 13:04:05 -0400
> From:          Pete Smith <n4zr@contesting.com>

> Isn't it "the square of the distance"?

This is getting off the subject of antennas, sorta. 

The force reduction is by square of the distance for a charge 
distant enough to look like every thing comes from a *single point* 
in space. Then Coulomb's 1/R^2 law applies.

But if the source of the field is close enough that the charge 
doesn't appear to come from a single point in space, the effect 
changes.

In the case where the charge appears to come from a very large 
area, force falls off at the rate of 1 / distance. Inverse to the 
distance. There is a gradual change to the 1/R^2  law as the point 
under consideration moves out.

I'm assuming we have a mast on top of a tall tower, and the antenna 
is close enough to the tower and mast the tower and mast don't look 
like a single point.

73, Tom W8JI
w8ji.tom@MCIONE.com

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