This is the experience when using walkie-talkies. When the received signal is strong, the noise is small or even no noise; on the contrary, when the signal is weak, the noise is large. When using the same walkie-talkie to receive signals from the other party, the closer the call distance, the stronger the received signal, and the smaller the noise. on the contrary, the longer the call distance, the weaker the received signal, the greater the noise, and even the other party cannot be heard the voice of speech. This requires us to properly adjust and use the squelch function of the walkie-talkie according to different situations to solve the relationship between useful signals and squelch.
The squelch switch is a function specially designed to solve the contradiction between the call quality and noise of the wireless walkie-talkie.
It depends on the user's communication environment and communication requirements.
When the user requires a longer communication distance, the received signal will become weaker at this time, which requires higher receiving sensitivity and lower squelch level, or a shallower squelch adjustment.
When the user's communication distance is shorter and the received signal is stronger, the squelch level will be higher, or the squelch adjustment will be deeper and the noise will be smaller.
When there is an intermittent phenomenon during the call, it means that the radio receiving signal is weak, or the communication distance changes during the call, and the voice cannot be heard. At this time, the squelch level should be lowered to increase the sensitivity.
Under normal circumstances, the user uses it inside the unit, and the distance is not very far, and the level is set a little higher. For longer distances in the field, the level is set a little lower. Since each model has a different grade classification, sometimes it can only rely on experience, and the factory-grade setting can only be used as a reference.
In short, in wireless walkie-talkie communication, the principle of not making noise as much as possible under the conditions of the call should be met. As the environment and conditions change, the squelch adjustment knob or level should be adjusted in time according to the situation to make the wireless walkie-talkie in the best point.