What is the purpose of the squelch function on a two-way radio?

The squelch function on a two-way radio is primarily designed to reduce or eliminate background noise when no signal is present. When you adjust the squelch setting, you establish a threshold level for incoming signals. If the received signal is weaker than this threshold, the squelch will mute the audio output, preventing static or other unwanted noise from being heard. This function is particularly useful in environments where a lot of interference is present, allowing the user to focus on clear communications without the distraction of unnecessary noise.

By enabling only the signals that are strong enough to be heard when someone is transmitting, the squelch enhances the clarity of communications, ensuring that users only hear conversations or important signals rather than a continuous stream of static.