Public safety radio for LA Metro Tunnels thanks to ViaLite & Canam

The rebroadcasting of public safety and operations radio signals along LA Metro tunnels is being made possible by ViaLite and rebroadcast pioneer Canam Technology Inc. The companies have teamed up again to provide leading edge radio coverage using RF over fiber (RFoF) links to carry five bands of VHF/UHF radio simultaneously. Constrained by lack of space in the tunnels, a major challenge was to accomplish this using RFoF with a very small modular form factor, while loaded with chassis-like capabilities. ViaLite’s equipment met this need. A further advanced characteristic of the ViaLite equipment was producing top level and seamless RF performance in a redundant configuration, with an optical fiber run that exhibited -10 dB optical loss end to end. ViaLite‘s Green OEM modules, for broadcast, were integrated with leading edge Canam BDAs in a highly channelized configuration. The resulting system was fully redundant, complete with switching gear for both main and standby modes.

Another exceptional feature was that ViaLite customized their Green OEM modules to offer seamless communication of the system’s operational aspects all within the Metro’s Network Management System (NMS) over Ethernet, thus making the entire system a smart system. This gave the LA Metro the ability to remotely change and optimize performance characteristics, receive live system performance monitoring and multiple alarm notification features.

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