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Communication Systems

Q1: Which of the following is a false statement about Armstrong modulation system?

A The system is basically phase, not frequency, modulation

B AFC is not needed, as a crystal oscillator is used

C Equalization is unnecessary

D Frequency multiplication must be used

ANS:C - Equalization is unnecessary

Digital Modulation Techniques include FSK, QPSK, BPSK, etc. PCM isn't one of them.



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