The communication distance of the walkie talkie
In the wireless communication profession, there is generally no concept of "intercom distance", because ultrashort wave communication is the line of sight transmission, and the signal is blocked and interfered by buildings, trees, hills, electromagnetic fields, etc., affecting the actual call distance and quality. In the ideal state, the distance of the professional walkie-talkie will be very long, and the actual talk distance can only be between 0 and 10 kilometers. In the case of tall buildings or mountains blocking, the call distance will be relatively short. When there is support from the system base station, the talk range of the walkie-talkie can reach more than ten kilometers or even several tens of kilometers.
The 0.5W walkie-talkie sold in the market, the manufacturer's nominal maximum call distance is 3 kilometers. In fact, this maximum call distance is only a theoretical calculation data, which is based on the transmit power, that is to say, the 0.5W walkie-talkie has no obstacles. The maximum talk distance without any electromagnetic interference. In actual use, because the environment in which the user is located is different, the background noise is large and small, and the electromagnetic interference is strong and weak, so the actual call distance is generally between 0-3 km, which is far less than 3 km. . Many users often mistakenly think that the call distance in any environment is 3 kilometers when purchasing a walkie-talkie. This is a misunderstanding! It is impossible for any manufacturer to predict the user's use environment, and of course it is impossible to give the actual call distance.