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Radio Receivers
The controlled oscillator synthesizer is sometimes preferred over the direct one because
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
It does not require crystal oscillator
Answer
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Related Question
Radio Receivers
In a ratio detector
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
the circuit is the same as in a discriminator, except that the diodes are reversed
Answer
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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
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Radio Receivers
Indicate which of the following statements about the advantages of the phase discriminator over the slope detector is false:
Much easier alignment
Greater limiting
Fewer tuned circuits
Better linearity
Much easier alignment
Greater limiting
Fewer tuned circuits
Better linearity
Answer
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Radio Receivers
The image frequency of a superheterodyne receiver
Is due to insufficient adjacent channel rejection
Is not rejected be the IF tuned circuits
Is created within the receiver itself
Is independent of the frequency to which the receiver is tuned
Is due to insufficient adjacent channel rejection
Is not rejected be the IF tuned circuits
Is created within the receiver itself
Is independent of the frequency to which the receiver is tuned
Answer
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Radio Receivers
The frequency generated by each decade in a direct frequency synthesizer is much higher than the frequency shown; this is done to
Increase the frequency stability of the synthesizer
Reduce the number of crystals required
Reduce the spurious frequency problem
Reduce the number of decades
Increase the frequency stability of the synthesizer
Reduce the number of crystals required
Reduce the spurious frequency problem
Reduce the number of decades
Answer
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