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Harvard, IL sirens were disconnected in 2019 following a string of malfunctions that were originally blamed on malicious intent. The sirens were operated on a telephone relay system that ran off a central command point at the OA-4, which itself was radio activated. It's believed the telephone system was glitching and falsely activating the sirens numerous times before the city pulled the plug on the system.
Before the sirens were shut down, they were tested every Tuesday at 10:30AM for 3 minutes of Alert. The Thunderbolt had already been decommissioned many decades prior.
ACA Banshee 115 - Unused due to repeated system hackings. Located on Northfield Ave near the railroad tracks. Installed in 1976. 6/16/21, copyright Christopher Aylward.
ACA Screamer S-5 - Unused due to repeated system hackings. Located at Garfield Rd and Bourne St. Installed in 1976. 6/16/21, copyright Christopher Aylward.
ACA Screamer S-10 - Unused due to repeated system hackings. Located on Ayer St near W Brink St. Installed in 1976. 6/16/21, copyright Christopher Aylward.
Whelen OA-4 - Unused due to repeated system hackings. N Eastman St & W Brainard Ave. 6/16/21, copyright Christopher Aylward.
Whelen Vortex - Unused due to repeated system hackings. Airport Rd right in between Marengo Rd & S Division St
ORIGINAL CIVIL DEFENSE SIREN:
FS&S Thunderbolt 1003 - Inactive, at the center of town at N Division St & W Diggins St. Installed in June of 1969, first official test was June 28th of the same year. 6/16/21, copyright Christopher Aylward.
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