[Elecraft] How "clean" is a clean signal?

[Ron D'Eau Claire]

Dave, W1EUY, wrote:
I guess it's worth mentioning that some of this 'personality' is=20
illegal.
----------------------------------

Are you referring to 97.307 of the FCC rules Dave?

"    (a) No amateur station transmission shall occupy more bandwidth =
than=20
necessary for the information rate and emission type being transmitted,=20
in accordance with good amateur practice."

I am told that was left intentionally very b-r-o-a-d with the statement
"good amateur practice" simply to AVOID prohibiting a wide range of =
signals
and signal characteristics from rigs of virtually any design and age - =
since
the days of spark that is. Spark transmitters ARE specifically =
prohibited -
at least in the USA. =20

Ron AC7AC