Influencing factors of intercom

1. System parameters:
The stronger the output power of the transmitter, the greater the coverage of the transmitted signal.
The higher the receiver sensitivity of the communication machine, the longer the communication distance.
The gain of the antenna, when the antenna is matched with the machine, it is usually the case that the antenna height is increased and the receiving or transmitting ability is increased. The antenna used in hand-held walkie-talkies is generally a spiral antenna, and its bandwidth and gain are smaller than other types of antennas, which are more susceptible to human body influence.
2. Environmental factors:
The main environmental factors are the path, the density of trees, the electromagnetic interference of the environment, buildings, weather conditions and terrain differences. These factors and some other parameters directly affect the field strength and coverage of the signal.
3. Other influencing factors:
The battery is low. When the battery is low, the call quality deteriorates. In severe cases, there will be noise, affecting the normal call.
Antenna matching.
The quality of the sound mainly depends on the pre-accentuation and de-accentuation circuits, as well as the more advanced speech processing circuits "speech compaction circuit and low-level expansion circuit application", which has a good effect on fidelity speech.
The factors that affect the distance and effect of walkie-talkies are also related to the season, and summer is better than winter.