Which of the following silences the audio amplifier stages until a carrier is detected?
A)TRF
B)S meter
C)Conversion oscillator
D)Squelch circuits

Question

Quizplus · Accepted Answer

The squelch circuits are designed to silence the audio amplifier stages until a carrier (or signal) is detected above a certain threshold level. This helps to eliminate background noise when no signal is present. TRF (tuned radio frequency) is a type of radio receiver circuit, S meter is a visual display of signal strength, and conversion oscillator is a component of a superheterodyne receiver. None of these silence the audio amplifier stages until a carrier is detected.

Which of the Following Silences the Audio Amplifier Stages Until