Re: [K2][KAT2] Is it working as well as can be expected?

Posted by Don Wilhelm-4 on Aug 22, 2011; 1:31am
URL: http://elecraft.85.s1.nabble.com/K2-KAT2-Is-it-working-as-well-as-can-be-expected-tp6708777p6709909.html

Chip,

There is no regular procedure for using an antenna analyzer with the
KAT2, but if you saw a change in impedance with each of the manual
settings and those changes were consistent with adding (subtracting) the
amount of reactance equal to the particular inductor or capacitor
selected, then you have verified that the tuner is selecting the
inductors and capacitors correctly.

You will have to figure the reactance change from the manual
inductor/capacitor values for the frequency that your antenna analyzer
is using.

73,
Don W3FPR

On 8/21/2011 9:10 PM, Chip Stratton wrote:

> I've tried ALT, that did not improve the match on 20m and 15m. I have also
> very critically examined and re-flowed some solder joints without improved
> results. I can't identify by inspection any problems with the capacitors and
> inductors on the LC board.
>
> I do have a high quality antenna analyzer, a RigExpert AA230Pro, used to
> obtain the antenna figures in the second chart in my original post. I've
> also attached that analyzer to the antenna port of the KAT2, and activating
> each of the inductors and capacitors noted a change in the impedance with
> each change, but I did not look at this in a quantitative fashion.
>
> Don, is there a regular procedure for using the antenna analyzer to analyzer
> the KAT2?
>
> Thanks,
> Chip
>

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