Radio Receivers If the intermediate frequency is very high (indicate false statement) Tracking will be improved The selectivity will be poor Image frequency rejection is very good The local oscillator need not be extremely stable Tracking will be improved The selectivity will be poor Image frequency rejection is very good The local oscillator need not be extremely stable ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers To prevent overloading of the IF amplifier in a receiver, one should use Variable selectivity Variable sensitivity Squelch Double conversion Variable selectivity Variable sensitivity Squelch Double conversion ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement. Noting that no carrier is transmitter with J3E, we see that The transmission is not compatible with A3E Production of AGC is a rather complicated process Adjacent-channel rejection is more difficult The receiver cannot use a phase comparator for AFC The transmission is not compatible with A3E Production of AGC is a rather complicated process Adjacent-channel rejection is more difficult The receiver cannot use a phase comparator for AFC ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers When a receiver has good blocking performance, this means that 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 Its detector suffers from burnout ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The controlled oscillator synthesizer is sometimes preferred over the direct one because It does not require crystal oscillator Its frequency stability is better It is relatively free of spurious frequency It is a simpler piece of equipment It does not require crystal oscillator Its frequency stability is better It is relatively free of spurious frequency It is a simpler piece of equipment 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 750 kHz 2100 kHz 900 kHz 1650 kHz 750 kHz 2100 kHz 900 kHz ANSWER DOWNLOAD EXAMIANS APP
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