| 21. | Such changes in frequency relevant to social interaction are called frequency modulations ( FMs ).
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| 22. | The Japanese initially explored the idea of frequency modulation of a conventionally constructed composite signal.
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| 23. | Frequency modulation is widely used for FM radio broadcasting.
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| 24. | A different control technique known as Pulse-frequency modulation can be used to minimize these losses.
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| 25. | FRS radios use narrow-band frequency modulation ( NBFM ) with a maximum deviation of 2.5 kilohertz.
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| 26. | The audio uses amplitude modulation rather than the frequency modulation in use on modern analogue systems.
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| 27. | The disks were Modified Frequency Modulation ( MFM ) coded in 512-byte sectors, and were soft-sectored.
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| 28. | Channels 1 3 must use " narrowband " frequency modulation ( 2.5 kHz deviation ).
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| 29. | Frequency modulation varies the frequency of the carrier.
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| 30. | In addition a frequency modulation is applied to provide the recorder with an absolute time reference.
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