Radio Receivers A low ratio of the ac to the dc load impedance of a diode detector results in Poor AF response Negative-peak clipping Diagonal clipping Poor AGC operation Poor AF response Negative-peak clipping Diagonal clipping Poor AGC operation 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 permit easier tracking To help the image frequency rejection Because otherwise an intermediate frequency could not be produced To allow adequate frequency coverage without switching To permit easier tracking To help the image frequency rejection Because otherwise an intermediate frequency could not be produced ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement in connection with communications receivers. The noise limiter cuts off the receiver’s output during a noise pulse. A product demodulator could be used for the reception of Morse code. Double conversion is used to improve image rejection Variable sensitivity is used to eliminate selective fading The noise limiter cuts off the receiver’s output during a noise pulse. A product demodulator could be used for the reception of Morse code. Double conversion is used to improve image rejection Variable sensitivity is used to eliminate selective fading ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the following cannot be used to demodulate SSB: Product detector Complete phase-shift generator Diode Balance modulator Bipolar transistor balanced modulator Product detector Complete phase-shift generator Diode Balance modulator Bipolar transistor balanced modulator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a ratio detector stabilization against signal strength variations is provided the linearity is worse than in phase discriminator the circuit is the same as in a discriminator, except that the diodes are reversed the output is twice that obtainable from a similar phase discriminator stabilization against signal strength variations is provided the linearity is worse than in phase discriminator the circuit is the same as in a discriminator, except that the diodes are reversed the output is twice that obtainable from a similar phase discriminator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement. Noting that no carrier is transmitter with J3E, we see that 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 The receiver cannot use a phase comparator for AFC ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS