I modeled succesfully the W5GI... If interested enough I can put the NEC file
onto my web...
73,
Martin, OK1RR
> No mystery about the W5GI antenna anymore.
>
> Gene Hinkle, K5PA analyzed it at his antenna symposium at Austin Summerfest
> Texas State Ham Convention in August.
>
> The only mystery was that the original modelers W5GI relied on did not
> understand you cannot directly model the stub element section. If you drop
> the in line stub vertically off the antenna, it is electrically equivalent
> and you can model the rest of the antenna using conventional NEC type
> modeling. Then factor in the well known characteristic of the quarter wave
> stubs as to phase and you are done. It is a nice gain antenna alternative
> to the G5RV. Clever idea by W5GI.
>
> It is a collinear antenna, using phasing stubs integral to the elements on
> each side of the doublet.
> Thus, it presents some gain on 20m, much like the G5RV does.
>
> The entire Antenna presentation of the K5PA seminar is available on the
> web. Google for
> "Gene Hinkle K5PA".
>
> -Stuart
> K5KVH
>
>
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