[TowerTalk] Measuring resonance of a yagi element

[Jim Brown]

On 4/23/2020 7:08 AM, k7lxc--- via TowerTalk wrote:
>   When I was the Natl Sales Manager for Hy-Gain/Telex in the 90's, I met the guy that designed the TH-6. Hy-Gain had a nice antenna range and he said it took them 4 hours per iteration so I guess we'd say it was by educated trial-and-error.

That's not surprising. When you're engineering a product that must be 
put into production and will be widely sold for use in a wide variety of 
installations, you're wise to consider as many as possible of the 
variables that affect performance. At least two very good designers of 
ham antennas have noted this in published materials -- N6BT and G0KSC. 
Some of those variables are manufacturing tolerances, properties of the 
materials used, sensitivity of the design to mounting height, 
consistency of gain, pattern and impedance match over the desired 
frequency range, and how easy it is for customers to assemble without 
compromising the design. And, of course, available computing power for 
designers to model their designs is vastly greater (and far less costly) 
that it was in the '90s.

73, Jim K9YC