I wrote:
> I've found a reference for the formula I gave and John W1FV
said it originally came from IEEE Transactions on Broadcasting, but
I don't have the exact chapter and verse. You might ask W1FV.
After a little more searching:
######################################################
At 11:15 AM 10/19/98 -0700, Eric Gustafson wrote:
>
>
>Does anyone have or know of any single conductor diameter
>equivalences to use in models of system involving towers?
>
If you have access to the June 1998 issue of IEEE Transactions on
Broadcasting, check out the article: "A Method for Modeling Array Elements
When Using NEC and MININEC" by J.L. Smith. The author discusses methods
for modeling towers and in particular, describes a single-wire
representation for a triangular cross section tower. His result is that
the radius of the equivalent wire equals the cube root of the quantity
(D*F^2)/2 where D is the diameter of each tower leg and F is the width of
the tower face with all dimensions in the same units. Some references are
cited to justify this result.
73, John W1FV
#######################################################
http://lists.contesting.com/archives//html/Antennaware/1998-10/msg00018.html
Interesting that this was published in the same year as
K9AY's reference. Models and modelers don't always agree but I do
know this one worked very well for me.
73, Bill W4ZV
_______________________________________________
Antennaware mailing list
Antennaware@contesting.com
http://lists.contesting.com/mailman/listinfo/antennaware
|