[Lowfer] UWL loop

[Bill Ashlock]

> > I'm interested in knowing what you loopers think of a 15m loop for 185 
>kHz
> > -- 15m circumference, though, not diameter.

Not to put down the common "how am I coming in" approach, the difference in 
signal strength at a distant site for a loop with a 15M diameter vs a 15M 
circumference is basically the ratio of the two areas. This assumes the same 
conductor type and both loops are at least 6ft above ground at their lowest 
point. The area for the 15m cir loop is ~180 sq M and the area for the 15M 
diam loop is ~18 sq M so you are giving up 10X or 20 db.

The only way to beat this huge deficit (forget the multistrand approach, 
it's too unstable) is to reduce the loop conductor Rac loss by increasing 
the diameter of the conductor to the square of the loop diameter ratio. 
Assuming 0.1" for the larger loop conductor the smaller loop would have a 
diam of .1 *100 or 10 inches!

Bill

>I did it a few years ago, and while it worked, it may not be worth the
>effort. I think Dex did copy the thing at QRSS120 in the dead of winter. I
>was using a 4-wire cage of #8 wires at the time.
>
>It does have the advantage of being quite legal, though.
>
>John A.

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