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Circuit Refinements and Convenience Features
Servicing Multiplex Circuits
5 other sections not shown
19-kHz amplifier 19-kHz oscillator 19-kHz pilot carrier 19-kHz pilot signal 19-kHz signal 38-kHz carrier 38-kHz pulses 38-kHz subcarrier 38-kHz switching voltage adjust alignment amplitude amplitude modulation antenna applied attenuation audio frequencies bandpass filter base capacitor circuitry collector circuit components connected coupled dc voltage de-emphasis decoder circuit demodulation detector distortion emitter equipment fm stereo frequency modulation function hertz incoming 19-kHz pilot input listener low-pass low-pass filter main channel matrix circuit maximum Model mono monophonic multiplex circuits multiplex decoder noise operation oscilloscope output partial schematic percent position present program material quency reception recovered resistor resonant circuit right channel scope selector switch separation control shown in Fig sine wave squelch stage station stereo broadcasting stereo fm stereo indicator stereo receiver stereo separation stereo signal stereophonic subcarrier sidebands subchannel switching circuit tion transistor transmission transmitter tuned circuit tuner or receiver tuners and receivers volts vtvm waveform