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Radio Receivers
In a radio receiver with simple AGC
The audio stage gain is normally controlled by the AGC
The highest AGC voltage is produced
The faster the AGC time constant the more accurate the output
An increase in signal strength produces more AGC
The audio stage gain is normally controlled by the AGC
The highest AGC voltage is produced
The faster the AGC time constant the more accurate the output
An increase in signal strength produces more AGC
Answer
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Related Question
Radio Receivers
A superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is
750 kHz
900 kHz
2100 kHz
1650 kHz
750 kHz
900 kHz
2100 kHz
1650 kHz
Answer
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Radio Receivers
Indicate which of the following circuits could not demodulate SSB:
Product modulator
Balance modulator
Phase discriminator
BFO
Product modulator
Balance modulator
Phase discriminator
BFO
Answer
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Radio Receivers
A low ratio of the ac to the dc load impedance of a diode detector results in
Poor AF response
Diagonal clipping
Poor AGC operation
Negative-peak clipping
Poor AF response
Diagonal clipping
Poor AGC operation
Negative-peak clipping
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 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
To permit easier tracking
Answer
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Radio Receivers
Three-point tracking is achieved with
Double conversion
Variable selectivity
The padder capacitor
Double spotting
Double conversion
Variable selectivity
The padder capacitor
Double spotting
Answer
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