Radio Receivers In a radio receiver with simple AGC An increase in signal strength produces more AGC The audio stage gain is normally controlled by the AGC The highest AGC voltage is produced The faster the AGC time constant the more accurate the output An increase in signal strength produces more AGC The audio stage gain is normally controlled by the AGC The highest AGC voltage is produced The faster the AGC time constant the more accurate the output ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement in connection with communications receivers. Double conversion is used to improve image rejection The noise limiter cuts off the receiver’s output during a noise pulse. Variable sensitivity is used to eliminate selective fading A product demodulator could be used for the reception of Morse code. Double conversion is used to improve image rejection The noise limiter cuts off the receiver’s output during a noise pulse. Variable sensitivity is used to eliminate selective fading A product demodulator could be used for the reception of Morse code. ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A low ratio of the ac to the dc load impedance of a diode detector results in Poor AGC operation Negative-peak clipping Diagonal clipping Poor AF response Poor AGC operation Negative-peak clipping Diagonal clipping Poor AF response ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers To prevent overloading of the IF amplifier in a receiver, one should use Variable selectivity Squelch Double conversion Variable sensitivity Variable selectivity Squelch Double conversion Variable sensitivity ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the main functions of the RF amplifier in a superheterodyne receiver is to Permit better adjacent-channel rejection Improve the rejection of the image frequency Provide improved tracking Increase the tuning range of the receiver Permit better adjacent-channel rejection Improve the rejection of the image frequency Provide improved tracking Increase the tuning range of the receiver 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 1650 kHz 2100 kHz 900 kHz 750 kHz 1650 kHz 2100 kHz 900 kHz 750 kHz ANSWER DOWNLOAD EXAMIANS APP
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