I suspect the Superbertha yagis were copies of the NW3Z OWA designs
from Dayton many years ago. Here is but one link ... including the
6 element 15 meter on a 36' boom:
<https://www.iw5edi.com/wp-content/uploads/2020/05/nw3z-Antenna-Designs.pdf>
73,
... Joe, W4TV
On 2025-11-01 10:41 AM, Jim Rhodes wrote:
W3TX started the company, but had it for sale at one time due to other
issue taking up his time. I don't know if it was purchased or if he just
folded it up.
Jim K0XU
jim@rhodesend.net
On Sat, Nov 1, 2025, 08:36 <john@kk9a.com> wrote:
Superbertha Yagis were probably designed by WA3FET,perhaps K3LR was
involved. I would reach out to them. NR5M used some Superbertha Yagis on
his super-station that seems to be inactive lately. Perhaps George has a
manual for that model.
If it was me, I would just model one using your hardware. YU7EF and G0KSC
have some good OWA designs to start with.
GL
John KK9A
from [George Fremin III K5TR wrote:
A few years ago I acquired two what I am pretty sure are 15MOWA-36 yagi
that
were made by W3TX at SuperBertha.com. I have not been able to reach W3TX
or
find any information about spacing / element length etc.
I can, of course, make measurements and put what I have into EZNEC and
redesign
these antennas but before I do that I figured I would see if anyone has a
manual or information about these antennas.
There are snapshots of the web site on the WayBackMachine but no info
beyond
the above model number.
Thanks
George Fremin III
K5TR
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