[Elecraft] Amp power per $$ spreadsheet download

[Jim Brown]

On Sun,4/26/2015 10:33 PM, Vic Rosenthal wrote:
> Sharpening the envelope is harmonic distortion, not IMD. I think.

Nope. It's a bunch of square waves, and any square wave is composed of 
an infinite series of harmonics. Those frequencies are present in the 
drive signal (from small signal circuits to power amp circuits, whether 
in the rig or in a power amp), and if either is non-linear, distortion 
is produced.

It's important to realize that ANY non-linear element produces both IMD 
and harmonics -- indeed, in-band IMD is the result of the mixing of 
harmonics in a non-linear circuit. Quantities like IMD and THD are 
simply different ways of quantifying the distortion produced by 
non-linear devices!

73, Jim K9YC