[Elecraft] KAT100 - confused on R3 and R4 adjustment

[Lyle Johnson]

Hello Tim!

> When I set the K2 to 5 watts, I then adjust R4 so that the analog meter
> reads the proper voltage.  I then change the K2 to 10 watts and
> again adjust.... What am I missing?

The table on page 28 shows nominal voltage for 3 different power levels.
You just set for one of them.  If you have a KPA100, use the 20 watt level;
otherwise use 5 or 10 watts, your choice.

Don't worry if you set it at 10 and find the voltage from 5 watts isn't
exactly 1.3.  It doesn't matter.

Don't let the fact that your DMM has 3 or more digits of resolution fool you
into thinking you need that much accuracy; you don't.  The wattmeter section
of the tuner is there to let the tuner do its job, and to get you in the
ballpark for power setting.

If you check the specifications in the back of the manual, you will find
there is *no* specification for power accuracy or SWR accuracy...

Hope this helps!

73,

Lyle KK7P