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ACA Allertor-125 from Whitefish Bay, WI [9/12, Remastered]

Design changed at least three times throughout production. The most common port ratio is 9/12. The Allertor 125 can produce 2 tones. Alert and Attack (Wail). A third signal was also available, Yelp, which required a special type of motor and used a reversing magnetic starter. Early models used a gear driven rotator, which was changed to a chain drive rotator later.
Year: 1967-1984
Port Ratio: 8, 9/12, 8/12, 10/12, 12
Remastered of my allertor
Motors HP: 10, 15 [Bloomington had to use one, whitefish bay and lee summit has 15 hp allertors]