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 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 Reduce the number of crystals required ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers An AM receiver uses a diode detector for demodulation. This enables it satisfactorily to receive Single-sideband, suppressed-carrier Single-sideband, full-carrier ISB Single-sideband, reduced-carrier Single-sideband, suppressed-carrier Single-sideband, full-carrier ISB Single-sideband, reduced-carrier ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement. The superheterodyne receiver replaced the TRF receiver because the latter suffered from Inadequate selectivity at high frequencies Gain variation over the frequency coverage range Instability Insufficient gain and sensitivity Inadequate selectivity at high frequencies Gain variation over the frequency coverage range Instability Insufficient gain and sensitivity ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Three-point tracking is achieved with Double conversion Double spotting The padder capacitor Variable selectivity Double conversion Double spotting The padder capacitor Variable selectivity 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 Reducing the effect of noise at low modulation depths Reducing the effect of negative-peak clipping Improving the selectivity of the receiver Improving the effectiveness of the AGC Reducing the effect of noise at low modulation depths Reducing the effect of negative-peak clipping Improving the selectivity of the receiver Improving the effectiveness of the AGC ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a radio receiver with simple AGC The audio stage gain is normally controlled by the AGC An increase in signal strength produces more AGC The faster the AGC time constant the more accurate the output The highest AGC voltage is produced The audio stage gain is normally controlled by the AGC An increase in signal strength produces more AGC The faster the AGC time constant the more accurate the output The highest AGC voltage is produced ANSWER DOWNLOAD EXAMIANS APP
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