[Elecraft] KAT3 antenna tuner

[Roger D Johnson]

I've recently installed the KAT3  in my K3.  The instructions are quite
vague and I'm not sure mine is operating correctly.

First, the manual says there are 30 memories/band for the ATU settings.
These seem to change automatically as I tune around. The question is, does
the unit switch settings at the points at which I tuned or half way between?
IOW, if I tuned at 1820 and 1860, and tune up from the bottom of the band,
the tuner should start with the 1820 settings. Ideally, when I get to 
1840 it
should switch to the 1860 settings. Is this what happens?

When I go to the LC set menu, I see the value of C and L. The manual says
I can change C by turning the VFO A knob. When I do, the relays click but
the display doesn't change. If I turn the VFO B knob to change L nothing
happens. After turning VFO B, VFO A stops working! If I then tap ATU
TUNE, it goes to another part of the menu entirely!

I started on this topic because the tuner failed to find a good match at 
1800.
My VNA shows the impedance at the TX connector as 22+j8 which should
be well within the proper range.

73, Roger



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