What is the modulation index of a FM phone transmitter producing a maximum carrier deviation of 6 kHz when modulated with a 2 kHz modulating frequency?
ā¢ FM modulation index definition ā¢ Relationship between frequency deviation and modulating frequency ā¢ Importance of using the same units (Hz vs kHz) in calculations
ā¢ What is the standard formula for the modulation index in frequency modulation (FM)? ā¢ How do you convert the given kHz values so the units match in the formula? ā¢ Once you plug the numbers into the formula, what kind of result (large/small, unitless) should you expect for a modulation index?
ā¢ Confirm that both frequency deviation and modulating frequency are in the same units before dividing ā¢ Remember that modulation index for FM is a ratio, not in Hz or kHz ā¢ Check whether any answer choices have incorrect units or clearly unreasonable magnitudes for a ratio
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