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Bandshifting to 10.7 MHz IF

In this FM example, the radio is tuned to 101.5 MHz (FM is 88-108 MHz). The intermediate frequency (IF) is 10.7 MHz, and the incoming signals are bandshifted into that frequency, plus and minus 50 kHz for the audio signal and subcarriers. The 1 MHz crystal frequency is an arbitrary reference signal for ensuring the accuracy of the local oscillator. See PLL.

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