What does FSK stand for in radio communications?

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Multiple Choice

What does FSK stand for in radio communications?

Explanation:
FSK is a modulation method where the frequency of a carrier is shifted between discrete values to carry digital data. The term stands for Frequency Shift Keying, with the “ing” often omitted in shorthand, so the given option aligns with the concept. In practice, different frequencies encode different data bits (typically one frequency for 0 and another for 1, with more frequencies possible for multi-level schemes). The receiver detects which frequency is present to recover the transmitted bits. This method emphasizes frequency changes rather than amplitude or phase, which is why the other options don’t fit.

FSK is a modulation method where the frequency of a carrier is shifted between discrete values to carry digital data. The term stands for Frequency Shift Keying, with the “ing” often omitted in shorthand, so the given option aligns with the concept. In practice, different frequencies encode different data bits (typically one frequency for 0 and another for 1, with more frequencies possible for multi-level schemes). The receiver detects which frequency is present to recover the transmitted bits. This method emphasizes frequency changes rather than amplitude or phase, which is why the other options don’t fit.

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