[Amps] MOSFET amp filtering - was: auto-tune

[Joe Subich, W4TV]

On 12/15/2016 1:33 PM, Jim Brown wrote:
> Indeed, our use of the words "continuous wave" to describe Morse
> transmitted by keying a radio transmitter is another one of those
> wrong words used to describe things that cause us to misunderstand
> how things work.

Our use of "continuous wave" is based on the description of the
*carrier*, not the composite modulation. "Continuous wave" was
used in the very first days to distinguish signals generated by an
oscillator/power amplifier from the "damped wave" signals generated
by a spark transmitter.

That amateurs (and the entire commercial radio industry) called
on/off keyed telegraphy "continuous wave" is nothing more than a
reflection that telegraphy was the *only* "radio" at the time the
terms established themselves as the common language.  It was as
much as 20 years before "phone" became more than laboratory toy
and radiotelegraphy was a given.

I learned a great deal of the history from my grandfather-in-law;
a Western Union Station Chief in the early 1900's, early amateur
(licensed before the FCC), early TV experimenter and correspondent
of John Logie Baird.

73,

    ... Joe, W4TV