Simplifying PLL Design

What is RF? What is an RF tuner?
Radio frequency (RF) is the range of electromagnetic frequencies above the audio range and below infrared light (from 10kHz to 300GHz).
RF tuner
An RF tuner is a circuit module or standalone equipment that detects radio-frequency (RF) signals usually of low amplitude and amplifies and converts them to a form suitable for further processing.

What is PLL?
A phase-locked loop or phase lock loop (PLL) is a control system which generates a signal that has a fixed relation to the phase of a "reference" signal. A PLL circuit responds to both the frequency and the phase of the input signals, automatically raisin