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 transmission is not compatible with A3E
The receiver cannot use a phase comparator for AFC

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Radio Receivers
The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency

Because otherwise an intermediate frequency could not be produced
To allow adequate frequency coverage without switching
To permit easier tracking
To help the image frequency rejection

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