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You don't even have to consult the Smith Chart. The application has done
that for you. To the left of the Smith Chart, the application has given
you the following information for the three markers you placed:
[image: image.png]

Marker 1: Impedance = 40.1 + j 15.4 ohms
Marker 2: Impedance = 49.4 + j 40.6 ohms
Marker 3: Impedance = 99.2 + j 58.2 ohms

There's lot's more information, but everything is inductive - plus sign to
the complex portion of the impedance. This would indicate the wires are a
bit too long. Although the match at the lowest frequency, Marker 1 at
28.300 MHz, is not bad at all and nothing to be concerned about. Still at
Marker 2 at 29.000 MHz, not bad. However, the last marker at 29.700 MHz is
beginning to show some compromises.

The SWR is also given at the top of the second column for each marker
frequency.

Dave - W?LEV


On Wed, Jan 15, 2025 at 12:00?AM David Gerhart via groups.io <DAVID=
[email protected]> wrote:

Fresh out of box. A sweep of my DIY 10M antenna...

S1 - connected to 50' Rg58 via BNC connectors to my 10M dipole. The lowest
piece of which is about 12' off of the ground. I set markers a L, M and H
points of the band.

S2 port had nothing connected.

The VNA was calibrated just prior to the sweep. An anchored via USB to my
Windows tablet.

Now I'm digging into how to read the Smith Chard and return / impedance
info...

Comments please!!

Do I need to update VNA firmware or make other changes. Software on the
tablet?

What's next folks?

--

*Dave - W?LEV*


--
Dave - W?LEV