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1What does Bandwidth mean?Width of the frequency range over which a signal may be transmitted without significant attenuation. Physical property of the transmission channel that depends on the construction, thickness, and length of wire or fire.
2In Analogue Modulation what does Carrier mean? and why is it required?A Sinusoidal waveform modified to represent the binary information. It is required because in its unmodulated form the binary signal has frequency components that are not conductive to the channel.