An even more simplistic view is that the audio signal is a single
wiggly line, what you would see on an oscilloscope.? The subtle
changes in that generate the multiple tones of speech, even those
of a full orchestra.
What seems to be planned is to make changes to the frequency and
amplitude of the RF signal to replicate that, with the appropriate
modulation.? If you were doing AM all that would be needed would
be to change the amplitude. For a 3 kHz bandwidth at least 6000
times a second.? For FM changing the frequency, also 6000 times a
second.? SSB needs changing both.?? The challenge may be to
synchronise the frequency and amplitude changes so they happen at
the same time.
Chris, G5CTH
