[TowerTalk] Coax Matching Stubs W/Smith Chart

[Brian Alsop]

I may be wrong but I believe one has to know the complex impedance of 
the mismatched load before doing anything.  This is the real problem as 
most hams can't measure anything but SWR.  There are lots of 
combinations of R, X which will give the same SWR.  Each will require a 
different solution.

73 de Brian/K3KO


On 11/1/2012 11:57, Paul Christensen wrote:
>> Can anyone recommend any tutorials for learning how to read a smith
>> chart and also using the Sim Smith application ?
>> I want to be able to design coax matching stubs and am a total newbie.
>> The smith chart is intimidating to me but I thought I would see if I
>> could master it.
>
> Here's a QST article of a very good basic introduction to the Smith
> Chart that should remove the intimidation very quickly.  ARRL membership
> may be required for access:
>
> http://www.arrl.org/files/file/Technology/tis/info/pdf/q1106037.pdf
>
> Another is the excellent three-part QST series by Ward Silver, N0AX.
> Part I starts here:
>
> http://p1k.arrl.org/pubs_archive/109006
>
> Jim, K9YC has drafted a very informative PowerPoint presentation on Sim
> Smith:
>
> http://audiosystemsgroup.com/PacificonSmithChart.pdf
>
> Paul, W9AC
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