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Zionsville officials say new sirens work in storms but monthly radio tests are failing for some units
Summary
Deputy Chief Jason Paz told the safety board that the Town of Zionsville runs legacy radio sirens and newer, developer-funded sirens that also trigger off National Weather Service polygons; some new units aren’t responding during local radio tests after the 9-1-1 center moved from copper to fiber and technicians will trace the connection.
Deputy Chief Jason Paz told the board the Town of Zionsville operates two warning‑siren systems: legacy sirens that run off a radio signal and newer sirens installed as development occurred that add redundancies such as triggering from the National Weather Service. "The Town of Zionsville actually runs 2 separate systems," he said.
Paz said the newer sirens are designed to be triggered automatically by National Weather Service polygons, but the town has observed failures during local…
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