Radio Receivers If the intermediate frequency is very high (indicate false statement) The selectivity will be poor Tracking will be improved Image frequency rejection is very good The local oscillator need not be extremely stable The selectivity will be poor Tracking will be improved Image frequency rejection is very good The local oscillator need not be extremely stable ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A receiver has poor IF selectivity. It will therefore also have poor Blocking Diversion reception Sensitivity Double-spotting Blocking Diversion reception Sensitivity Double-spotting ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The controlled oscillator synthesizer is sometimes preferred over the direct one because 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 It is a simpler piece of equipment It is relatively free of spurious frequency Its frequency stability is better ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a broadcast superheterodyne receiver, the Mixer input must be tuned to the signal frequency RF amplifier normally works at 455 kHz above the carrier frequency Local oscillator frequency is normally double the IF Local oscillator operates below the signal frequency Mixer input must be tuned to the signal frequency RF amplifier normally works at 455 kHz above the carrier frequency Local oscillator frequency is normally double the IF Local oscillator operates below the signal frequency ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the main functions of the RF amplifier in a superheterodyne receiver is to Provide improved tracking Permit better adjacent-channel rejection Increase the tuning range of the receiver Improve the rejection of the image frequency Provide improved tracking Permit better adjacent-channel rejection Increase the tuning range of the receiver Improve the rejection of the image frequency ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers When a receiver has good blocking performance, this means that Its image frequency rejection is poor It is unaffected by AGC derived from nearby transmissions Its detector suffers from burnout It does not suffer from double-spotting Its image frequency rejection is poor It is unaffected by AGC derived from nearby transmissions Its detector suffers from burnout It does not suffer from double-spotting ANSWER DOWNLOAD EXAMIANS APP
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