ACA Cyclone

The ACA Cyclone is an outdoor warning siren built by Alerting Communicators of America (ACA) — now American Signal Corporation — in 1968. ==History== The Cyclone was designed in 1968, by Jim Biersach, as a siren with a 40 horsepower motor and sound output of 120 dB at a distance of 100 ft. It was intended for civil defense, but many communitie...
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