Question
How is squelch adjusted so that a transceiver receives signals but not noise?
Answer Options
- A) Adjust the squelch until noise is heard and then decrease the setting until the noise just stops
- B) Turn the squelch fully on and then advance the volume until noise is heard
- C) Turn off the squelch while talking and turn it on when receiving
- D) Turn off the squelch and then turn it back on
Correct Answer: A
Explanation
The purpose of the squelch function (T2B13) is to mute the speaker when only background noise is present, while still unmuting for a weak but usable signal. To find this optimal setting, you first reduce the squelch setting (or turn it off) until you hear the constant background noise (the ‘hiss’).
Then, you slowly decrease the setting until the noise just stops. This is the optimal ‘break’ point, ensuring that any incoming signal that is slightly stronger than the background noise will open the squelch and allow you to hear the communication, while maintaining quiet during inactive periods.
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