[Elecraft] K3 cleanest signal possible

[Kjeld Holm]

Dear all,

I have a K3/100 and an Acom 2000A and I am wondering how to get the cleanest
signal. The K3 is supplied with 13.8V. 
I see several options. Adjusting the K3 to 9W thinking that the KPA100 does
not kick in could be one method. Another one could be adjusting the K3 to
14W thinking that the KPA100 will be running very easily (and clean). A
third one could be adjusting the K3 to 40W thinking that the KPA100 will be
running in the middle of its power range (and therefore being very clean).
I do not have the technical knowledge to decide which option is relevant. 
Of course I know that the output from the Acom 2000A will vary very much
according to the selected output from the K3. 
Vy 73 de OZ1CCM "Kel"