Radio Receivers The typical squelch circuit cuts off RF interference when the signal is weak An IF amplifier when the AGC is maximum an audio amplifier when the carrier is absent An IF amplifier when the AGC is minimum RF interference when the signal is weak An IF amplifier when the AGC is maximum an audio amplifier when the carrier is absent An IF amplifier when the AGC is minimum 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 Reduce the number of decades Increase the frequency stability of the synthesizer Reduce the spurious frequency problem Reduce the number of crystals required Reduce the number of decades Increase the frequency stability of the synthesizer Reduce the spurious frequency problem ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement. Noting that no carrier is transmitter with J3E, we see that The receiver cannot use a phase comparator for AFC Production of AGC is a rather complicated process The transmission is not compatible with A3E Adjacent-channel rejection is more difficult The receiver cannot use a phase comparator for AFC Production of AGC is a rather complicated process The transmission is not compatible with A3E Adjacent-channel rejection is more difficult ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate which of the following circuits could not demodulate SSB: Product modulator Phase discriminator Balance modulator BFO Product modulator Phase discriminator Balance modulator BFO ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the following cannot be used to demodulate SSB: Bipolar transistor balanced modulator Complete phase-shift generator Diode Balance modulator Product detector Bipolar transistor balanced modulator Complete phase-shift generator Diode Balance modulator Product detector 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, full-carrier ISB Single-sideband, suppressed-carrier Single-sideband, reduced-carrier Single-sideband, full-carrier ISB Single-sideband, suppressed-carrier ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS