Question 143 Deck Safety

The correct answer is C) Just past the point where background noise is cut off. The squelch control is used to filter out background noise and weak signals, allowing the radio receiver to only produce audio output when a sufficiently strong signal is received. The normal setting for the squelch control is just past the point where the background noise is cut off, which allows the receiver to pick up weaker signals while still eliminating unwanted noise. The other options are incorrect because A) would result in the squelch being completely closed, which would not allow any signals to be received, and B) would have the squelch completely open, allowing all background noise to be heard, which is not the normal setting.