When using the frequency synthesis process, a signal of the desired accuracy and stability is produced by which, if any, of the following methods?
A. Automatic frequency control, that is, by sensing the difference between the oscillator frequency and the desired frequency and automatically compensating for this difference
B. Using a crystal-controlled oscillator to produce a stable high frequency, and through the process of frequency division selecting a subharmonic of this frequency as the desired frequency
C. The heterodyning and selection of frequencies which are not harmonically related to each other
D. None of the above
Show Answer
Answer: C
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