• On-board audio oscillator, • 2 types of FM modulators, 5 different types of demodulator amplitude limiter & filter, • Effect of noise in FM on same board, • FM Modulator Type : Reactance Modulator, Varactor Modulator, • VCO Based Modulator, • FM Demodulator type : Detuned Resonant Detector, Quadrature Detector, Foster-Seeley Detector, Ratio Detector, PLL Detector,