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Radio Receivers
Three-point tracking is achieved with
Double spotting
Variable selectivity
The padder capacitor
Double conversion
Double spotting
Variable selectivity
The padder capacitor
Double conversion
Answer
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Related Question
Radio Receivers
A receiver has poor IF selectivity. It will therefore also have poor
Blocking
Diversion reception
Sensitivity
Double-spotting
Blocking
Diversion reception
Sensitivity
Double-spotting
Answer
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Radio Receivers
A superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is
1650 kHz
750 kHz
2100 kHz
900 kHz
1650 kHz
750 kHz
2100 kHz
900 kHz
Answer
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Radio Receivers
A low ratio of the ac to the dc load impedance of a diode detector results in
Negative-peak clipping
Diagonal clipping
Poor AF response
Poor AGC operation
Negative-peak clipping
Diagonal clipping
Poor AF response
Poor AGC operation
Answer
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Radio Receivers
Show which of the following statements about the amplitude limiter is untrue:
The circuit is always biased in class C, by virtue of the leak-type bias.
Leak-type bias must be used
The output must be tuned
When the input increases past the threshold of the limiting, the gain decreases to keep the output constant.
The circuit is always biased in class C, by virtue of the leak-type bias.
Leak-type bias must be used
The output must be tuned
When the input increases past the threshold of the limiting, the gain decreases to keep the output constant.
Answer
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Radio Receivers
When a receiver has good blocking performance, this means that
Its image frequency rejection is poor
Its detector suffers from burnout
It does not suffer from double-spotting
It is unaffected by AGC derived from nearby transmissions
Its image frequency rejection is poor
Its detector suffers from burnout
It does not suffer from double-spotting
It is unaffected by AGC derived from nearby transmissions
Answer
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