Relay - antennas

At the core of mobile networks, how do relay antennas operate? What is the nature of the waves that they broadcast? Information on these issues.


Set on the top of a building, on a water tower, or on pylons

Antennas are part of our environment both in the city and in the countryside.  Their role is to maintain an "invisible thread" between the mobile user and his/her callers.

Thanks to them, we can move while calling without being cut off, and it is still thanks to them that we can be reached almost anywhere. They are set throughout the territory, most densely in populated urban areas, to route the voice traffic and the mobile Internet which we used to operate our Smartphones, tablets and 3G+ keys.




A relay-antenna near your home?

Usually set high up, they spread their beam as lighthouses do, and they only reach the ground 50 to 200 meters away from the antenna depending on its height. The more one moves away from the antenna, the more the beam decreases in intensity.



The reception of radio signals is more difficult:

  • in a city, because buildings, particularly high ones are obstacles for radio waves
  • in emossed terrains with hills and valleys as the waves don't follow reliefs
  • inside of building compared to outside, as walls are obstacles for the propagation of radio waves.