Radio Receivers
One of the following cannot be used to demodulate SSB:

Bipolar transistor balanced modulator
Diode Balance modulator
Product detector
Complete phase-shift generator

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

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

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Radio Receivers
Indicate the false statement in connection with communications receivers.

Variable sensitivity is used to eliminate selective fading
The noise limiter cuts off the receiver’s output during a noise pulse.
Double conversion is used to improve image rejection
A product demodulator could be used for the reception of Morse code.

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