KK74HC4046A loop equivalent, phase-locked loop.
include FM and FSK modulation and demodulation, frequency synthesis and multiplication, frequency discrimination, tone d.
Voltage Controlled Oscillator/Demodulator Output The VCO requires two or three external components to operate. These are R1, R2, C1. Resistor R1 and Capacitor C1 are selected to determine the center frequency of t.
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