[Elecraft] KAT2 set-up problems

[Tom Hammond NØSS]

Pete:

>I'm having some trouble setting up my KAT2 bridge null (CALn).
>
>Whatever I do I can't get the reflected voltage under about 7mV, and if I do
>get it that low it tends to vary a little - generally between 7 and 11. I am
>using a dummy-load that is good up to above 1.5GHz, so I don't think that
>that could be the cause of the problems. I have replaced the capacitor with
>an miniature air-dielectric model because the one supplied seemed to be a
>bit dodgy, and I have of course checked the SWR bridge several times, even
>going so far as to re-wind the transformer - but I can't get a reading lower
>than 7-11mV.
>
>Can anybody give me a nudge in the right direction, please? Or am I worrying
>about nothing?

What you are obtaining should be COMPLETELY adequate!

If you are using a DMM for the voltage measurement, try replacing it with 
an analog meter... MUCH easier to use and no 'bobbling' bacn 'n forth 
between readings.

73,

Tom Hammond   N0SS