Radio Receivers Indicate which of the following circuits could not demodulate SSB: Balance modulator Phase discriminator BFO Product modulator Balance modulator Phase discriminator BFO Product modulator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency To allow adequate frequency coverage without switching To help the image frequency rejection To permit easier tracking Because otherwise an intermediate frequency could not be produced To allow adequate frequency coverage without switching To help the image frequency rejection To permit easier tracking Because otherwise an intermediate frequency could not be produced 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 900 kHz 750 kHz 2100 kHz 1650 kHz 900 kHz 750 kHz 2100 kHz ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers To prevent overloading of the IF amplifier in a receiver, one should use Variable sensitivity Double conversion Variable selectivity Squelch Variable sensitivity Double conversion Variable selectivity Squelch 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 relatively free of spurious frequency It is a simpler piece of equipment Its frequency stability is better It does not require crystal oscillator It is relatively free of spurious frequency It is a simpler piece of equipment Its frequency stability is better 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, suppressed-carrier ISB Single-sideband, full-carrier Single-sideband, reduced-carrier Single-sideband, suppressed-carrier ISB Single-sideband, full-carrier ANSWER DOWNLOAD EXAMIANS APP
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