Re: K3 SWR Accuracy - reprise

Posted by Phil Salas on Nov 04, 2009; 10:53pm
URL: http://elecraft.85.s1.nabble.com/K3-SWR-Accuracy-reprise-tp3943810p3948909.html

"How long is the coax between the LP100 sensor and the K3? This can have
a significant impedance transformation impact as you go to higher
frequencies, leading to a different indicated SWR at each end."

The impedance changes, but not the SWR.  Looking at this on a Smith Chart,
you can see that you just rotate around a constant SWR circle.  Minus coax
losses of course, which are negligable when we're talking a few feet at HF.

Phil - AD5X

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