[Elecraft] Safe continuous power level of KPA 100/ transformer design

[Renardy, Martin]

Dear gentlemen,

I have two questions regarding the KPA 100 option:

1) What is the safe continuouse power level, which can the KPA 100
deliver for example for one hour? 

2) How does the PA transformer work? Somehow the cores itself seem to be
the primary input of the
    transformer?

Regards

Martin