Radio Receivers In a broadcast superheterodyne receiver, the Mixer input must be tuned to the signal frequency Local oscillator operates below the signal frequency Local oscillator frequency is normally double the IF RF amplifier normally works at 455 kHz above the carrier frequency Mixer input must be tuned to the signal frequency Local oscillator operates below the signal frequency Local oscillator frequency is normally double the IF RF amplifier normally works at 455 kHz above the carrier frequency ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Three-point tracking is achieved with The padder capacitor Double spotting Double conversion Variable selectivity The padder capacitor Double spotting Double conversion Variable selectivity ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate which of the following circuits could not demodulate SSB: BFO Phase discriminator Product modulator Balance modulator BFO Phase discriminator Product modulator Balance modulator 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 Increase the frequency stability of the synthesizer Reduce the number of decades Reduce the spurious frequency problem Reduce the number of crystals required Increase the frequency stability of the synthesizer Reduce the number of decades Reduce the spurious frequency problem ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers When a receiver has good blocking performance, this means that 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 Its image frequency rejection is poor It does not suffer from double-spotting ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the following cannot be used to demodulate SSB: Complete phase-shift generator Bipolar transistor balanced modulator Product detector Diode Balance modulator Complete phase-shift generator Bipolar transistor balanced modulator Product detector Diode Balance modulator ANSWER DOWNLOAD EXAMIANS APP