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 Inadequate selectivity at high frequencies Insufficient gain and sensitivity Instability Gain variation over the frequency coverage range Inadequate selectivity at high frequencies Insufficient gain and sensitivity Instability ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate which of the following circuits could not demodulate SSB: Phase discriminator Product modulator BFO Balance modulator Phase discriminator Product modulator BFO Balance modulator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers To prevent overloading of the IF amplifier in a receiver, one should use Squelch Double conversion Variable selectivity Variable sensitivity Squelch Double conversion Variable selectivity Variable sensitivity ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The controlled oscillator synthesizer is sometimes preferred over the direct one because It is a simpler piece of equipment It is relatively free of spurious frequency Its frequency stability is better It does not require crystal oscillator It is a simpler piece of equipment It is relatively free of spurious frequency Its frequency stability is better It does not require crystal oscillator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is 900 kHz 1650 kHz 750 kHz 2100 kHz 900 kHz 1650 kHz 750 kHz 2100 kHz ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a radio receiver with simple AGC The audio stage gain is normally controlled by the AGC The faster the AGC time constant the more accurate the output The highest AGC voltage is produced An increase in signal strength produces more AGC The audio stage gain is normally controlled by the AGC The faster the AGC time constant the more accurate the output The highest AGC voltage is produced An increase in signal strength produces more AGC ANSWER DOWNLOAD EXAMIANS APP
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