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Radio Receivers
When a receiver has good blocking performance, this means that
It does not suffer from double-spotting
It is unaffected by AGC derived from nearby transmissions
Its detector suffers from burnout
Its image frequency rejection is poor
It does not suffer from double-spotting
It is unaffected by AGC derived from nearby transmissions
Its detector suffers from burnout
Its image frequency rejection is poor
Answer
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Related Question
Radio Receivers
Indicate the false statement. The superheterodyne receiver replaced the TRF receiver because the latter suffered from
Gain variation over the frequency coverage range
Inadequate selectivity at high frequencies
Instability
Insufficient gain and sensitivity
Gain variation over the frequency coverage range
Inadequate selectivity at high frequencies
Instability
Insufficient gain and sensitivity
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
Reduce the number of decades
Reduce the spurious frequency problem
Reduce the number of crystals required
Increase the frequency stability of the synthesizer
Reduce the number of decades
Reduce the spurious frequency problem
Reduce the number of crystals required
Increase the frequency stability of the synthesizer
Answer
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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
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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
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Radio Receivers
The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency
To permit easier tracking
Because otherwise an intermediate frequency could not be produced
To allow adequate frequency coverage without switching
To help the image frequency rejection
To permit easier tracking
Because otherwise an intermediate frequency could not be produced
To allow adequate frequency coverage without switching
To help the image frequency rejection
Answer
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