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

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

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

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

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Radio Receivers
In a radio receiver with simple AGC

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
The highest AGC voltage is produced

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