On Apr 18, 2005, at 8:19 AM, Bill Fuqua wrote:
> I think the real issue is being missed there. The real test of
> non-linearity is the production of harmonic and intermodulation
> distortion. This means allows measurements of nonlinearity as small as
> a very small fraction of a percent. Even to a part per million with
> very specialized equipment.
> If there were nonlinear propagation the RF spectra would be
> unusable.
Would CW telegraphy signals be unreadable or simply vanish?
> The apparent increase in signal strength could be in perception. ...
That's what I thought until I sold the Plywood Box amplifier and made
some on-the-air measurements with a step-attenuator.
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