[Elecraft] [KAT500] Tuning

[John Reilly]

I don't think I understand how the tuning works with the KAT500. I have 
a K3, KPA500, and the two 15-pin cables (K3 to KAT, and KAT to KPA).

I set my K3 Tune Power to 25w. I thought when I press tune on the K3, 
the KAT500 should tune, and it shouldn't key the Amp; however, when I do 
this, I continue to get around 500w from the Amp.

Could someone please explain how this is supposed to work?
Thanks,
   - 73, John, N0TA