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.
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