As part of the construction project of the D403 state road, from the Škurinje junction to the Port of Rijeka, we have installed and put into operation the active part of the radio system in the Podmurvice Tunnel.
An adaptation and upgrade of the existing broadcasting equipment were carried out at the central station in Cavle to integrate the Podmurvice Tunnel into the existing broadcasting system.
One amplifier substation of the radio system was installed in the Podmurvice Tunnel.
Tests of the central station and substation were conducted, and the system was put into operation.