For unguided transmission it is virtually impossible to transmit baseband signals.

Question

Quizplus · Accepted Answer

Baseband signals have frequency content that starts from zero and extends up to a maximum frequency determined by the bandwidth of the signal. Unguided transmission media, such as air or space, are not suitable for transmitting baseband signals as they introduce noise and distortion in the signal due to various environmental factors. Therefore, baseband signals need to be modulated onto carrier signals of higher frequencies for successful transmission over unguided media.

For Unguided Transmission It Is Virtually Impossible to Transmit Baseband