to 5,005 kc, and the lower sideband extends from 4,999.8 to 4,995 kc. The bandwidth is then 10 kc,
which is twice the highest modulating frequency (5 kc).
(4) The intelligence of an amplitude-modulated signal exists solely in the sidebands, the
amplitude of which vary according to the strength of the modulating signal.
(5) Amplitude modulation generally is used by radiotelephone transmitters operating in the
medium and high frequency portions of the spectrum.
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