Radio Receivers One of the main functions of the RF amplifier in a superheterodyne receiver is to Provide improved tracking Improve the rejection of the image frequency Permit better adjacent-channel rejection Increase the tuning range of the receiver Provide improved tracking Improve the rejection of the image frequency Permit better adjacent-channel rejection Increase the tuning range of the receiver ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the following cannot be used to demodulate SSB: Complete phase-shift generator Product detector Diode Balance modulator Bipolar transistor balanced modulator Complete phase-shift generator Product detector Diode Balance modulator Bipolar transistor balanced modulator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a radio receiver with simple AGC The highest AGC voltage is produced The audio stage gain is normally controlled by the AGC The faster the AGC time constant the more accurate the output An increase in signal strength produces more AGC The highest AGC voltage is produced The audio stage gain is normally controlled by the AGC The faster the AGC time constant the more accurate the output An increase in signal strength produces more AGC ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers To prevent overloading of the IF amplifier in a receiver, one should use Double conversion Squelch Variable selectivity Variable sensitivity Double conversion Squelch Variable selectivity Variable sensitivity ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement. The superheterodyne receiver replaced the TRF receiver because the latter suffered from Gain variation over the frequency coverage range Insufficient gain and sensitivity Inadequate selectivity at high frequencies Instability Gain variation over the frequency coverage range Insufficient gain and sensitivity Inadequate selectivity at high frequencies Instability ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Three-point tracking is achieved with Double conversion The padder capacitor Variable selectivity Double spotting Double conversion The padder capacitor Variable selectivity Double spotting ANSWER DOWNLOAD EXAMIANS APP
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