Radio Receivers Indicate the false statement in connection with communications receivers. Variable sensitivity is used to eliminate selective fading A product demodulator could be used for the reception of Morse code. The noise limiter cuts off the receiver’s output during a noise pulse. Double conversion is used to improve image rejection Variable sensitivity is used to eliminate selective fading A product demodulator could be used for the reception of Morse code. The noise limiter cuts off the receiver’s output during a noise pulse. Double conversion is used to improve image rejection ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a broadcast superheterodyne receiver, the RF amplifier normally works at 455 kHz above the carrier frequency Mixer input must be tuned to the signal frequency Local oscillator operates below the signal frequency Local oscillator frequency is normally double the IF RF amplifier normally works at 455 kHz above the carrier frequency Mixer input must be tuned to the signal frequency Local oscillator operates below the signal frequency Local oscillator frequency is normally double the IF ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A receiver has poor IF selectivity. It will therefore also have poor Blocking Diversion reception Double-spotting Sensitivity Blocking Diversion reception Double-spotting Sensitivity ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate which of the following circuits could not demodulate SSB: BFO Balance modulator Phase discriminator Product modulator BFO Balance modulator Phase discriminator Product modulator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A low ratio of the ac to the dc load impedance of a diode detector results in Poor AF response Diagonal clipping Poor AGC operation Negative-peak clipping Poor AF response Diagonal clipping Poor AGC operation Negative-peak clipping ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate which of the following statements about the advantages of the phase discriminator over the slope detector is false: Better linearity Fewer tuned circuits Greater limiting Much easier alignment Better linearity Fewer tuned circuits Greater limiting Much easier alignment ANSWER DOWNLOAD EXAMIANS APP
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