Radio Receivers One of the main functions of the RF amplifier in a superheterodyne receiver is to Permit better adjacent-channel rejection Provide improved tracking Improve the rejection of the image frequency Increase the tuning range of the receiver Permit better adjacent-channel rejection Provide improved tracking Improve the rejection of the image frequency Increase the tuning range of the receiver ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement. The superheterodyne receiver replaced the TRF receiver because the latter suffered from Insufficient gain and sensitivity Instability Gain variation over the frequency coverage range Inadequate selectivity at high frequencies Insufficient gain and sensitivity Instability Gain variation over the frequency coverage range Inadequate selectivity at high frequencies ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the following cannot be used to demodulate SSB: Bipolar transistor balanced modulator Product detector Diode Balance modulator Complete phase-shift generator Bipolar transistor balanced modulator Product detector Diode Balance modulator Complete phase-shift generator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The controlled oscillator synthesizer is sometimes preferred over the direct one because 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 It does not require crystal oscillator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A receiver has poor IF selectivity. It will therefore also have poor Sensitivity Double-spotting Blocking Diversion reception Sensitivity Double-spotting Blocking Diversion reception ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a broadcast superheterodyne receiver, the Local oscillator frequency is normally double the IF Local oscillator operates below the signal frequency RF amplifier normally works at 455 kHz above the carrier frequency Mixer input must be tuned to the signal frequency Local oscillator frequency is normally double the IF Local oscillator operates below the signal frequency RF amplifier normally works at 455 kHz above the carrier frequency Mixer input must be tuned to the signal frequency ANSWER DOWNLOAD EXAMIANS APP
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