Radio Receivers To prevent overloading of the IF amplifier in a receiver, one should use Double conversion Variable sensitivity Variable selectivity Squelch Double conversion Variable sensitivity Variable selectivity Squelch ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers When a receiver has good blocking performance, this means that Its detector suffers from burnout Its image frequency rejection is poor It does not suffer from double-spotting It is unaffected by AGC derived from nearby transmissions Its detector suffers from burnout Its image frequency rejection is poor It does not suffer from double-spotting It is unaffected by AGC derived from nearby transmissions ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers An AM receiver uses a diode detector for demodulation. This enables it satisfactorily to receive Single-sideband, reduced-carrier Single-sideband, full-carrier Single-sideband, suppressed-carrier ISB Single-sideband, reduced-carrier Single-sideband, full-carrier Single-sideband, suppressed-carrier ISB ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The frequency generated by each decade in a direct frequency synthesizer is much higher than the frequency shown; this is done to Reduce the number of crystals required Reduce the spurious frequency problem Reduce the number of decades Increase the frequency stability of the synthesizer Reduce the number of crystals required Reduce the spurious frequency problem Reduce the number of decades Increase the frequency stability of the synthesizer ANSWER DOWNLOAD EXAMIANS APP
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 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 ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The image frequency of a superheterodyne receiver Is independent of the frequency to which the receiver is tuned Is not rejected be the IF tuned circuits Is created within the receiver itself Is due to insufficient adjacent channel rejection Is independent of the frequency to which the receiver is tuned Is not rejected be the IF tuned circuits Is created within the receiver itself Is due to insufficient adjacent channel rejection ANSWER DOWNLOAD EXAMIANS APP