I would like to see someone please take this discussion one step
further and define the terms "hard" keying and "soft" keying, and describe
how either an operator or someone listening would be able to discriminate
between the two.
Gary, this topic has been covered in great detail in nearly every ARRL
Handbook for at least the last fifty years -- as well as other publications.
Some of the most relevant material is covered in articles during the '40s
and '50s by By Goodman and George Garmmer. Not all of the material
pertaining to "optimum key-shaping" is accurate, but otherwise, the content
is still accurate.
Many of us do not like to be held hostage to one rise/fall setting as a "one
size fits all" answer to our operating practices. With DSP-generated
raised-cosine key shaping, it's now possible to tighten up key shaping at
high CW speeds without appreciably consuming additional bandwidth.
Paul, W9AC
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