Radio Receivers The controlled oscillator synthesizer is sometimes preferred over the direct one because It does not require crystal oscillator It is relatively free of spurious frequency It is a simpler piece of equipment Its frequency stability is better It does not require crystal oscillator It is relatively free of spurious frequency It is a simpler piece of equipment Its frequency stability is better 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 An AM receiver uses a diode detector for demodulation. This enables it satisfactorily to receive Single-sideband, suppressed-carrier ISB Single-sideband, reduced-carrier Single-sideband, full-carrier Single-sideband, suppressed-carrier ISB Single-sideband, reduced-carrier Single-sideband, full-carrier ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the main functions of the RF amplifier in a superheterodyne receiver is to Provide improved tracking Increase the tuning range of the receiver Improve the rejection of the image frequency Permit better adjacent-channel rejection Provide improved tracking Increase the tuning range of the receiver Improve the rejection of the image frequency Permit better adjacent-channel rejection ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a ratio detector the circuit is the same as in a discriminator, except that the diodes are reversed the linearity is worse than in phase discriminator stabilization against signal strength variations is provided the output is twice that obtainable from a similar phase discriminator the circuit is the same as in a discriminator, except that the diodes are reversed the linearity is worse than in phase discriminator stabilization against signal strength variations is provided the output is twice that obtainable from a similar phase discriminator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement in connection with communications receivers. A product demodulator could be used for the reception of Morse code. The noise limiter cuts off the receiver’s output during a noise pulse. Double conversion is used to improve image rejection Variable sensitivity is used to eliminate selective fading A product demodulator could be used for the reception of Morse code. The noise limiter cuts off the receiver’s output during a noise pulse. Double conversion is used to improve image rejection Variable sensitivity is used to eliminate selective fading ANSWER DOWNLOAD EXAMIANS APP
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