Radio Receivers
The controlled oscillator synthesizer is sometimes preferred over the direct one because

It is a simpler piece of equipment
It does not require crystal oscillator
It is relatively free of spurious frequency
Its frequency stability is better

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

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

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