Train Radio System
The system sets up communication between Central Control & Motormen of running train along the entire stretch of Metro Railway. In tunnel section free space propagation from conventional antenna is not possible. Leaky Coaxial Cable has been laid along the entire roof of the tunnel, which serves as antenna. The cable is fed from five radio base station located in the section. Connections to all base stations from Central Control are through Optical Fibre. The newly opened Mahanayak Uttam Kumar - Kavi Nazrul section is situated open area and covered with train radio communication by means of two repeaters located at Mahanayak Uttam Kumar and Masterda Surja Sen stations respectively. The repeaters in open area connects train-bourne equipments to the existing Telteck Train radio system.
Metro Railway has now intended to provide GSM-R technology sharing the Main Switching Center of Eastern Railway. A fresh leaky cable in GSM band is being laid for this purpose. The work is expected to be completed by middle of next year.