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E8B04:What is the modulation index of an FM phone signal having a maximum carrier deviation of plus or minus 6 kHz if the highest modulating frequency is 2 kHz?

E8B04E8B

What is the modulation index of an FM phone signal having a maximum carrier deviation of plus or minus 6 kHz if the highest modulating frequency is 2 kHz?

Direct answer summary (2024-2028 NCVEC pool)

The official correct answer for E8B04 is 3.

The key fact is 3. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.

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More questions in E8B

E8B01What is the modulation index of an FM signal?E8B02How does the modulation index of a phase-modulated emission vary with RF carrier frequency?E8B03What is the modulation index of an FM phone signal having a maximum frequency deviation of 3000 Hz either side of the carrier frequency if the highest modulating frequency is 1000 Hz?E8B05What is the deviation ratio of an FM phone signal having a maximum frequency swing of plus or minus 5 kHz if the highest modulation frequency is 3 kHz?E8B06What is the deviation ratio of an FM phone signal having a maximum frequency swing of plus or minus 7.5 kHz if the highest modulation frequency is 3.5 kHz?E8B07Orthogonal frequency-division multiplexing (OFDM) is a technique used for which types of amateur communication?