Thanks for your comment, Brian!
Isn't it a shame that Uda, the fellow that did all the work, never gets
his name mentioned when we talk about that type of antenna. <sigh>
-John
On 3/31/2026 11:47 AM, Brian Beezley wrote:
> NI0K said:
>
> "I've been 'recommending' to hams that they should, if possible, buy a
> Yagi of computer aided design. Roger Cox did this at Hy-gain and I
> believe his are the oldest computer-aided design Yagis."
>
> I licensed Yagi optimization software to both Hy-Gain and M-Squared
> Antennas in the 1990s. I believe Mike Staal at M2 got it before Roger
> Cox at Hy-Gain. But before that, Dr. James Lawson, W2PV, a physicist,
> wrote "Yagi Antenna Design," a book published by the ARRL in 1986. His
> FORTRAN program did not employ automatic optimization. I'm sure hams
> home-brewed some of the designs, but I don't know if any were offered
> commercially.
>
> As long as we're on Yagi history, Mike Staal seems to be the first to
> introduce the close-spaced director characteristic of what are now
> called OWA designs. Mike regarded the technique as proprietary and
> kept quiet about it.
>
> Here is a link to "A Secret Story About the Yagi Antenna," published
> by the IEEE. I loved the part about Uda arriving in San Francisco
> after the WW II. His reaction at seeing all the TV Yagis on homes is
> delightful.
>
> https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=88216
>
> Brian
>
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