The influence factors of the interphone

Environmental factor

Environmental factors mainly include path, density of trees, electromagnetic interference of the environment, buildings, weather conditions and terrain differences. These factors and other parameters directly affect the field strength and coverage of signals.

Other influencing factors

1) the battery power is insufficient, and when the battery power is insufficient, the call quality will become worse. In severe cases, there will be noise, affecting normal calls.

2) antenna matching, antenna frequency and machine frequency are not consistent, antenna impedance mismatch will seriously affect the call distance. For the user, the antenna should be tightened when the antenna is replaced. In addition, the antenna that is not provided by the non manufacturer or the antenna that does not conform to the frequency of the machine can not be used.

3) the quality of the sound quality mainly depends on the pre accentuation and the accentuation of the circuit. At present, there are more advanced voice processing circuits "Application of voice compressing circuit and low level expansion circuit", which has a good effect on fidelity speech.

4) the factors influencing the distance and effect of interphone are also related to seasons, and summer is better than winter.