ATI HPSS
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In civil defense sirens, the ATI High-Power Speaker Station (HPSS), is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert citizens of air raids and natural disasters.
Systems
HPSS systems use high-powered electronic speakers, which can be independently arranged to provide directional or omnidirectional coverage. The HPSS16 has four speakers, while the HPSS32 has eight speakers. They can be used as public address (PA) systems and can play programmed tones. Options include solar-powered operation and pre-recorded voice messages.
Customers
- San Francisco, California - Features the sound of the decommissioned Federal Signal STL-10 sirens that it replaced
- Casitas Dam, Ventura, California - Looks like Federal Signal Directional Speaker Array (DSA) sirens, but can have 7–8 speakers per stack, and gray caps on the speaker cones.
- Indian Point Energy Center, New York
- Israel has 300 HPSS systems as a part of its warning system.
- Sedgwick County, Kansas and the City of Wichita use 27 ATI HPSS32 units.
- Forsyth County, Georgia has mostly ATI HPSS16r and ATI HPSS32 systems.
- Allen, Texas has 26 ATI HPSS-32 units.
- Fort Riley, Kansas has 2 ATI HPSS-16 units.
- Del City, Oklahoma has 8 ATI HPSS-16 units.
- Malmstrom AFB, MT has 6 ATI HPSS-16 units.
- Pasig, Philippines has 3 ATI HPSS-32 units.
- Davao City, Philippines has at least 11 ATI HPSS-32 units.
- Battle Creek, Michigan has four rotating ATI HPSS-16R units.
- Menominee, Michigan has three rotating ATI HPSS-32R units
- Pensacola NAS, Florida, ATI HPSS-16 (mostly) mostly used for tornado warnings and play the colors
- University of West Florida In Pensacola, Florida, ATI HPSS-16 sirens here are used for chemical spills, weather warnings, lock downs, and they play the Westminster Chimes.
- Arnold, Missouri 7 ATI HPSS-32 units.
- Ketchikan, Alaska maintains a system of 3 ATI HPSS-32 units.[permanent dead link]
- Hudson County, New Jersey has an unknown number of HPSS sirens.
- Chile, Antofagasta has an unknown number of HPSS-32 sirens.
- Sarnia, Ontario and the surrounding communities use a system of 22 ATI HPSS-32 units.
- Bandon, Oregon use 4 ATI HPSS-32's.
- Palo Verde Nuclear Generating Station, Wintersburg, Arizona use over 70 HPSS-32 sirens.
- Cannon Beach, Oregon Arch Cape, Oregon has 6 HPSS-32 sirens