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

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

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

Double conversion is used to improve image rejection
Variable sensitivity is used to eliminate selective fading
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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