[TowerTalk] wire antenna question

[Steve Hunt]

Here's another more common-place example - a 15m 2-el cubical quad.

Minimum VSWR:  Freq = 21.03 MHz, Z = 101.1 - j16.64, VSWR = 2.09
Resonance: Freq = 21.13 MHz, zZ= 112.2+j0, VSWR = 2.25

The "anomaly" occurs because the VSWR is being  referenced to something 
significantly different than the resonant impedance of the antenna; but 
that's often the practical situation we find ourselves in.

73,
Steve G3TXQ




> Gerald,
>
> I agree that for most "normal" situations minimum VSWR and resonance are 
> coincident. But I have given one example, and there are others, where 
> they are not.
>
> The values I quoted were taken from EZNEC VSWR plots, and confirmed in 
> the VK1OD on-line calculator.
>
> 73,
> Steve
>   
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