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Assertion : The information contained in our original low frequency baseband signal is to be translated into high or radio frequencies before transmission. Reason: For transmitting a signal, the antenna should have a size comparable to the wave length of the signal.

Answer»


Solution :Fortransmitting a SIGNAL, we need an antenna or an serial. Thus antenna should hav e a size comparable to the wavelength of the signal to the signal. For an electromagentic WAVE of freqeuncy 20 kHz. The wavelength is15km. Obviously such a long antenna is not possible to constract and operate HENCE direct transmission of suchbaseband signal is not p ractical. Thereforethere is a need of translating the information CONTAINED in our original low frequency baseband signal into HIGH or radio frequencies before transmission.


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