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Rune, thanks for the reply, much appreciated.

I download the '64' version of VC++ 2015 first and that didn't work...8^)

Then did the same for the '86; version and Eureka!..

There it is, a window full with a nice large Smith Chart.

Now to figure out how to use it when my Nanovna-H arrives around the end of December. I'll be doing some reading in the mean time.

Thanks for the assist.

--
Chuck, W5USJ