[TowerTalk] Change in Frequency As Antenna Height Rises

[jimlux]

On 6/2/16 6:17 PM, john at kk9a.com wrote:
> What a great effort by G3TXQ and AC6LA showing how close actual resonances
> are to modeled ones. Modeling has some limitations, especially NEC2, but if
> done properly the results are amazingly accurate.
>
> John KK9A
>
The variations are almost certainly due to a difference in the assumed 
epsilon and conductivity from reality.

I'm sure if Dan fooled around a while, you could get a closer match.

And then there's the measurement uncertainty in the resonance frequency.