Radio Receivers The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency To permit easier tracking To allow adequate frequency coverage without switching To help the image frequency rejection Because otherwise an intermediate frequency could not be produced To permit easier tracking To allow adequate frequency coverage without switching To help the image frequency rejection Because otherwise an intermediate frequency could not be produced 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 decades Reduce the number of crystals required Reduce the spurious frequency problem Increase the frequency stability of the synthesizer Reduce the number of decades Reduce the number of crystals required Reduce the spurious frequency problem Increase the frequency stability of the synthesizer ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Three-point tracking is achieved with Double spotting Variable selectivity The padder capacitor Double conversion Double spotting Variable selectivity The padder capacitor Double conversion ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement. Noting that no carrier is transmitter with J3E, we see that Adjacent-channel rejection is more difficult Production of AGC is a rather complicated process The receiver cannot use a phase comparator for AFC The transmission is not compatible with A3E Adjacent-channel rejection is more difficult Production of AGC is a rather complicated process The receiver cannot use a phase comparator for AFC The transmission is not compatible with A3E ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers If the intermediate frequency is very high (indicate false statement) The local oscillator need not be extremely stable Image frequency rejection is very good The selectivity will be poor Tracking will be improved The local oscillator need not be extremely stable Image frequency rejection is very good The selectivity will be poor Tracking will be improved ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers If a FET is used as the first AF amplifier in a transistor receiver, this will have the effect of Improving the effectiveness of the AGC Reducing the effect of negative-peak clipping Reducing the effect of noise at low modulation depths Improving the selectivity of the receiver Improving the effectiveness of the AGC Reducing the effect of negative-peak clipping Reducing the effect of noise at low modulation depths Improving the selectivity of the receiver ANSWER DOWNLOAD EXAMIANS APP
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