Private radio networks are normally designed to cover limited areas in which the licence holders are performing their professional activity, using their own infrastructure: networks consisting only of mobile stations (installed in vehicles or portable) and networks with one base station and mobile or portable stations.
In special cases, and depending on the activity, coverage may be increased with the use of multiple base stations (interconnected or not) sited at strategic locations to obtain expanded coverage of the network service area.
Standard limited areas are defined for the theoretical coverage of each base station, according to the frequency band in which the transmission frequencies are assigned.
Shared use of existing infrastructure at a given site is recommended whenever technically possible. This may include support structures, cables, filters, antennas and buildings.