1.

The image channel selectivity of super- heterodyne receiver depends upon (a) IF amplifiers only (b) RF and IF amplifiers only (c) Pre selector, RF and IF amplifiers (d) Pre selector and RF amplifiers

Answer»

(d) Pre selector and RF amplifiers

Image rejection depends on front end selectivity of receiver and must be achieved before If stage. So image channel selectivity depends upon pre selector & RF amplifier. If it enters IF stage it becomes impossible to remove it from wanted signal.



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