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On Monday, December 03, 2018 10:03:00 PM you wrote:
> Hi Paul,
>
> I think the scope match may be an old method but is advanced because it
> shows not only the magnitude of voltage and current and the phase
> between them, it also shows the waveforms at the power level of
> operation! A VNA, if i'm informed correctly injects a small test signal,
> so it is not a measurement at the peak power!
> If your antenna R just changes from 58 Ohm to 46 Ohm, then just forget
> it! I bet the changes can be much higher on average radio amater setups.
>
I agree Stefan!
And in my opinion if the transmission line is shorter than 1/10 of the wavelength ALL the impedance adjustments can be performed at the Transmitter side of the line.
So the impedance transformer at the antenna side is an unnecessary loss.
Adjust X at the antenna side and adjust R at the transmitter side ;-)
73 de Claudio IK2PII
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