Re: drawing smith charts
On Sat, Oct 23, 2021 at 04:58:30AM -0400, Gene Heskett wrote:
> Greetings;
>
> One of the things I occasionally do is service my local AM radio station
> when its off the air. This includes trying to keep the VSWR under
> control.
>
> I have a redpitaya Vector Network Analyser that I use to tune the tower,
> and it gives me the tuning state in the form of a smith chart. But while
> it claims to run with a linux system as the display, it doesn't, so I
> had to buy a cheap all-in-one with win 10 home edition on it. Works
> great but is a pita to setup and get started. The windows driver is also
> about 50x the size of the linux driver that doesn't work.
>
> What can I install to a buster machine that might make this graphical
> display work? We had, a decade back, a something or other "plot" that
> might have been able to draw a smith chart but I haven't seen it in the
> repos recently. It also was a square plotter, whereas the smith chart is
> circular at its maximum error limits.
Python3-scikit-rf looks promising to plot the data.
Debian electronics / Debian ham teams might have some good ideas
apt-cache search Smith threw this up
There's also various gnuplot / octave plots that might work.
Hope this helps
All best, as ever,
Andy Cater
>
> Can anyone suggest a linux substitute?
>
> Cheers, Gene Heskett.
> --
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author, 1940)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
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