When a Major Western Australian Mineral Resources provider needed to extend its underground comms, it chose RFI DSP-based repeaters. When a major mineral resources provider in Western Australia needed to extend the coverage of its underground communications, it chose RFI to supply and integrate a rebroadcast and combining system. RFI facilitated the extended VMRS (voice mobile radio system) coverage within underground areas, speci?cally linking the communications of the rail car dumpers and a conveyer belt tunnel under the harbour to the Port Hedland terminal and Finucane Island ore-transfer stations. In order to provide extended coverage, this project required two separate but similar networks coupled to existing multichannel base station sites. The ?rst was located at the Port Hedland Ne

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