For a dot lasting an hour, followed by a space lasting an hour and then
repeated, the total power is 50 Watts, with 25W in the carrier, and the rest
in the entire set of sidebands stretching out to infinite frequency each side
(negative frequencies included which just wrap round) and the sidebands spaced
apart by 0.0001389Hz. The amplitude roll-off depends on the pulse shaping, but
the total energy is contained only in an infinite bandwidth.
So if YOU filter out this signal in your Rx, the received power could vary with
CW speed as you lose some sideband energy.
Andy G4JNT
Of course. Indeed, when you have key clicks, you are not only interfering
with other users of the spectrum, but some of your valuable transmitted
energy will be ignored by the intended receiver, effectively reducing your
signal strength. With filtering appropriate for the chosen speed, only a
tiny portion of the energy should be outside the receiver's bandwidth.
--Stewart
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