Radio Receivers
The frequency generated by each decade in a direct frequency synthesizer is much higher than the frequency shown; this is done to

Reduce the number of decades
Reduce the number of crystals required
Increase the frequency stability of the synthesizer
Reduce the spurious frequency problem

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

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

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

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

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