[Elecraft] TUNE power, low vs high

[Arno Dienhart]

What could be the difference for the tuning result between tuning at, say,
0.8W vs at 3W?

If there is no difference, why is the ATU tuning set to 2 or 3W, and not
lower?

 

I am thinking that a random length antenna with a potentially high SWR will
tax the PA more at higher outputs. So why shouldn't I use a low output,
always (besides causing less QRM then)?

 

73 de Arno K7RNO