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At peak modulation an SSB transmitter radiate 1000W, what will it radiate with no modulation?(a) 1000 watts(b) 500 watts(c) 250 watts(d) 0 wattsI have been asked this question during an interview.I need to ask this question from Demodulation of VSB Modulated Wave in chapter VSB Modulation of Analog Communications

Answer»

Correct ANSWER is (d) 0 watts

To explain: POWER of a modulated wave is directly proportional to MODULATION INDEX. Thus, if there is no modulation in any SSB transmitter than, it will not RADIATE. So it will radiate 0 watts when there is no modulation.



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