¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Re: some Nano VNA SAVER 40m antenna graphs


 

Excellent work, Barry. I've always contended introduction of the NANOVNAs
would be an outstanding tool for learning. You've proved that. The
universities ought to be buying these in the 100s to teach what you have
learned.

Dave - W?LEV

On Thu, Aug 24, 2023 at 12:37?PM Barry K3EUI <k3euibarry@...> wrote:

What I found reassuring is that the four graphs (on all three antennas)
all agree with each other!
The RETURN LOSS (dB) is sharp (yes, I plot it as a negative value) showing
the reflections are least (greatest return loss) where the SWR is lowest,
and where the PHASE graph crosses ZERO degrees, and also where the Smith
Chart is closest to the Bull¡¯s Eye.

Now ¡°matching¡± makes more sense to me.
Any one graph predicts the others.

I passed all of these ham radio tests (teenager) without really
understaning any of these graphs.
Now (I think) I understand the relationships.
the Nano VNA forced me to really learn what these concepts are all about.

TU VNA SAVER author

de k3eui barry





--

*Dave - W?LEV*
--
Dave - W?LEV

Join [email protected] to automatically receive all group messages.