[Elecraft] 12 bit Time and Frequency Domain K3/Alpha 9500 Screen Shot

[Bob]

That's pretty sweet, 3rd harmonic being the worst and greater than 60 dB
down.  I like your Amp and the K3 driving it!

Times like this, with great propagation, make me think... 1000 watt carrier
with a 3rd harmonic 60 dB down says that harmonic is 1 mW.  I've had
reliable communication with Australia at 250 mW when the propagation is
favorable.  How far will 1 mW go?

Just thinking, not complaining.  I think the FCC requirement is 43 dB down
and you are MUCH better than that!

73, Bob, WB4SON