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What is the frequency deviation for a 12.21-MHz reactance-modulated oscillator in a +/- 5-kHz deviation, 146.52-MHz FM-phone transmitter?
+/- 416.7 Hz
The overall frequency multiplication factor is 146.52 MHz / 12.21 MHz ≈ 12. The deviation is also multiplied by this factor. So, Oscillator Deviation = Total Deviation / Multiplication Factor = 5000 Hz / 12 ≈ 416.67 Hz.
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