[OKDXA] Optimizing a HyGain 204-BA

[Unosuave Hombre]

Hi Jeff,
Its been my experience, shortening or lengthening an HF antenna elements or boom will not made much difference.  I would split the difference on the 3 measurements you found,  put the antenna with the reflector on the ground, director up in the air and take a swr measurement.  I think you will be really close to optimum performance!
73
Allen R.
N5RMS

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From: Ken Roberson via OKDXA<mailto:okdxa at mailman.qth.net>
Sent: Wednesday, August 9, 2023 5:38 PM
To: Oklahoma DX Association<mailto:okdxa at mailman.qth.net>; Jeff Martin<mailto:jeffk5we at gmail.com>
Subject: Re: [OKDXA] Optimizing a HyGain 204-BA

Jeff,
There is some information on page 2-18 in the ARRL YAGI Antenna Classics publication.
Hope this helps
73 Ken K5DNL

    On Wednesday, August 9, 2023 at 03:45:16 PM CDT, Jeff Martin <jeffk5we at gmail.com> wrote:

 Good Afternoon...
  I am rebuilding a HyGain 204-BA, 4 element 20 meter yagi. This antenna
is 45 years old. It originally came out some time before 45 years ago,
so the design is old. There were some mods which came out years ago,
after computer modeling became fashionable, for better element spacing
and length. In researching the internet, I have found 3 different sets
of measurements. So, I don't know which is best..
  By chance, has anyone any experience with optimizing a 204-BA? Do you
have any recommended measurements? Do you have any Eznec EZ files?
  Thanks for any help...

73,
Jeff - K5WE

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