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

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

ANSWER DOWNLOAD EXAMIANS APP

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

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP