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
The transmission is not compatible with A3E
Production of AGC is a rather complicated process
Adjacent-channel rejection is more difficult

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Radio Receivers
If a FET is used as the first AF amplifier in a transistor receiver, this will have the effect of

Improving the selectivity of the receiver
Reducing the effect of negative-peak clipping
Improving the effectiveness of the AGC
Reducing the effect of noise at low modulation depths

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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 help the image frequency rejection
To permit easier tracking
To allow adequate frequency coverage without switching

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