Radio Receivers
Indicate the false statement. Noting that no carrier is transmitter with J3E, we see that

The transmission is not compatible with A3E
Production of AGC is a rather complicated process
Adjacent-channel rejection is more difficult
The receiver cannot use a phase comparator for AFC

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Radio Receivers
In a radio receiver with simple AGC

The highest AGC voltage is produced
The audio stage gain is normally controlled by the AGC
The faster the AGC time constant the more accurate the output
An increase in signal strength produces more AGC

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Radio Receivers
Show which of the following statements about the amplitude limiter is untrue:

Leak-type bias must be used
When the input increases past the threshold of the limiting, the gain decreases to keep the output constant.
The output must be tuned
The circuit is always biased in class C, by virtue of the leak-type bias.

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