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

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

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

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Radio Receivers
In a radio receiver with simple AGC

The highest AGC voltage is produced
The faster the AGC time constant the more accurate the output
An increase in signal strength produces more AGC
The audio stage gain is normally controlled by the AGC

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