Common use of Base Stations Clause in Contracts

Base Stations. The Base Stations are installed in the chosen locations scattered in required coverage area and constitute receive-only or receive/transmit sites. The Base Stations include computer-controlled receivers that receive signals from the VLU or PAL and transfer the information to the NCC via the communication lines for further processing and display. Some of the Base Stations are equipped with standard paging transmitters controlled by special controllers. The transmitters receive the information from the NCC and transmit it to the VLU or PAL in a synchronized form. These transmissions serve for synchronization of all active VLUs/PALs and interrogation of the chosen unit. The transmitters are timed by GPS receivers installed at the stations. Some of the Base Stations contain special synchronization transmitters, responsible for precise calibration of the stations. All of the stations are equipped with appropriate antennas installed on masts, lightning protection systems, air-conditioning and UPS systems.