question_answer

In the given block diagram of a receiver, identify the boxes labelled as X and \[\Upsilon \] and write their functions.                 

Answer:

                                \[\text{X }=\]Intermediate frequency \[\left( \text{IF} \right)\] stage. \[\Upsilon \] = Amplifier IF stage changes the carrier frequency to a (standard) lower frequency. Amplifier strengthens the detected signal which is not strong enough to be made use of directly.