[Elecraft] K3 SWR Accuracy - reprise
Stewart
stewart at baker.nildram.co.uk
Mon Nov 9 05:38:09 EST 2009
Hi Jack,
Thank you for the time and effort you spent on making and reporting measurements
on the K3 SWR accuracy. You have saved me from the chore of further investigations.
It is interesting to note the close degree of correlation between the measurements that you made
using calibrated high accuracy components, and mine made with more run of the mill items.
In addition your results show just what a small effect some of the parasitic effects like the length
of coax used and the LP-100 coupler being in circuit have on overall measurement accuracy.
It maybe that Wayne can make changes to the firmware to compensate for the KAT3 strays.
I would have thought that as the KAT3 is a factory produced item the variation in strays between
individual units would be minimal, and therefore a high SWR measurement repeatability
could be achieved.
73
Stewart G3RXQ
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