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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 |
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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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