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In standard analog NTSC (North American) TV, the aural carrier is placed 4.5 MHz above the

vestigial visual carrier ... which I think corresponds to 0.75 MHz from the top edge of the RF

channel but I'm not sure now.

The aural carrier is plain old FM modulated, exactly like the familiar FM radio at 88 - 108 MHz,

except that its peak deviation is 25 KHz instead of 75 KHz ... or about 9.5 dB less audio out of

an identical detector.

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Q: Type of Analog Modulation used for Sound in TV?
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