IdeaWazaWiki - User contributions [en]

ATI HPSS

2010-02-16T05:51:49Z

75.8.230.54:

The ATI HPSS is an electronic outdoor warning system manufactured by Acoustic Technology, Inc (ATI) that is used to alert the surrounding populace of [[tornadoes]], [[hurricanes]], severe [[thunderstorms]], fires and so on. It superseded an earlier rotating siren that ATI designed. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as [[Federal Signal|Federal Signal's]] [[Federal Signal Modulator|Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Areas known to use HPSS systems==
*[[San Francisco, California]]
*[[Nashville, Tennessee]]
*Casitas Dam, [[Ventura, California]]
*[[Indian Point Energy Center]], [[New York]]

==Problems and criticism==
The sirens have drawn sharp criticism from civil defense aficionados for several reasons.

*Tone - ATI sirens, with the exception of the most recent models (and the ATI systems used in [[San Francisco, California]]), used a 1000 Hz [[Sine wave|Sine]] wave, that creates a high pitched tone. Some allege that this is much too high to be distinctly audible against a noisy background, or over acceptable distances. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - In San Francisco, many of their ATIs have the tone of an old [[Federal Signal]] STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. As few speakers can tolerate such low-pitched sounds at high volume, this may not necessarily be the fault of the speakers used.

==External Links==
*[http://www.atisystem.com Corporate web page]

[[Category:Sirens]]

ATI HPSS

2010-02-16T05:33:21Z

75.8.230.54:

The ATI HPSS is an electronic outdoor warning system manufactured by Acoustic Technology, Inc (ATI) that is used to alert the surrounding populace of [[tornadoes]], [[hurricanes]], severe [[thunderstorms]], fires and so on. It superseded an earlier rotating siren that ATI designed. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as the [[Federal Signal Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Problems and criticism==
The sirens have drawn sharp criticism from civil defense aficionados for several reasons.

*Tone - ATI sirens, with the exception of the most recent models (and the ATI systems used in [[San Francisco, California]]), used a 1000 Hz [[Sine wave|Sine]] wave, that creates a high pitched tone. Some allege that this is much too high to be distinctly audible against a noisy background, or over acceptable distances. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - In San Francisco, many of their ATIs have the tone of an old [[Federal Signal]] STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. As few speakers can tolerate such low-pitched sounds at high volume, this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]

ATI HPSS

2010-02-16T05:32:51Z

75.8.230.54: /* Problems and criticism */

The ATI HPSS is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert the surrounding populace of [[tornadoes]], [[hurricanes]], severe [[thunderstorms]], fires and so on. It superseded an earlier rotating siren that ATI designed. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as the [[Federal Signal Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Problems and criticism==
The sirens have drawn sharp criticism from civil defense aficionados for several reasons.

*Tone - ATI sirens, with the exception of the most recent models (and the ATI systems used in [[San Francisco, California]]), used a 1000 Hz [[Sine wave|Sine]] wave, that creates a high pitched tone. Some allege that this is much too high to be distinctly audible against a noisy background, or over acceptable distances. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - In San Francisco, many of their ATIs have the tone of an old [[Federal Signal]] STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. As few speakers can tolerate such low-pitched sounds at high volume, this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]

ATI HPSS

2010-02-16T05:26:11Z

75.8.230.54: /* Problems and criticism */

The ATI HPSS is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert the surrounding populace of [[tornadoes]], [[hurricanes]], severe [[thunderstorms]], fires and so on. It superseded an earlier rotating siren that ATI designed. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as the [[Federal Signal Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Problems and criticism==
The sirens have drawn sharp criticism from civil defense aficionados for several reasons.

*Tone - Most ATI sirens, with the exception of the most recent models (and the ATI systems used in [[San Francisco, California]]), used a 1000 Hz [[Sine wave|Sine]] wave, that creates a high pitched tone. Some allege that this is much too high to be distinctly audible against a noisy background, or over acceptable distances. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - In San Francisco, many of their ATIs have the tone of an old [[Federal Signal]] STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. As few speakers can tolerate such low-pitched sounds at high volume, this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]

ATI HPSS

2010-02-16T05:25:42Z

75.8.230.54:

ATI HPSS

2010-02-16T05:25:22Z

75.8.230.54: /* Problems and criticism */

The ATI HPSS is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert the surrounding populace of [[tornadoes]], [[hurricanes]], [[severe thunderstorms]], fires and so on. It superseded an earlier rotating siren that ATI designed. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as the [[Federal Signal Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Problems and criticism==
The sirens have drawn sharp criticism from civil defense aficionados for several reasons.

*Tone - ATI sirens, with the exception of the most recent models (and the ATI systems used in [[San Francisco, California]]), used a 1000 Hz [[Sine wave|Sine]] wave, that creates a high pitched tone. Some allege that this is much too high to be distinctly audible against a noisy background, or over acceptable distances. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - In San Francisco, many of their ATIs have the tone of an old [[Federal Signal]] STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. As few speakers can tolerate such low-pitched sounds at high volume, this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]

ATI HPSS

2010-02-16T05:23:43Z

75.8.230.54:

The ATI HPSS is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert the surrounding populace of [[tornadoes]], [[hurricanes]], [[severe thunderstorms]], fires and so on. It superseded an earlier rotating siren that ATI designed. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as the [[Federal Signal Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Problems and criticism==
The sirens have drawn sharp criticism from civil defense aficionados for several reasons.

*Tone - ATI sirens, with the exception of the most recent models (and the ATI systems used in [[San Francisco, California]]), used a 1000 Hz [[Sine wave|Sine]] wave, that creates a high pitched tone. Some allege that this is much too high to be distinctly audible against a noisy background, or over acceptable distances. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - In San Francisco, many of their ATIs have the tone of an old Federal Signal STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. As few speakers can tolerate such low-pitched sounds at high volume, this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]

ATI HPSS

2010-02-16T05:22:44Z

75.8.230.54: /* Problems and criticism */

The ATI HPSS is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert people of Tornadoes, Hurricanes, Severe thunderstorms, fires and so on. It superseded an earlier rotating siren that ATI built. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as the [[Federal Signal Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Problems and criticism==
The sirens have drawn sharp criticism from civil defense aficionados for several reasons.

*Tone - ATI sirens, with the exception of the most recent models (and the ATI systems used in [[San Francisco, California]]), used a 1000 Hz [[Sine wave|Sine]] wave, that creates a high pitched tone. Some allege that this is much too high to be distinctly audible against a noisy background, or over acceptable distances. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - In San Francisco, many of their ATIs have the tone of an old Federal Signal STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. As few speakers can tolerate such low-pitched sounds at high volume, this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]

ATI HPSS

2010-02-16T05:13:49Z

75.8.230.54: /* Problems and criticism */

The ATI HPSS is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert people of Tornadoes, Hurricanes, Severe thunderstorms, fires and so on. It superseded an earlier rotating siren that ATI built. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as the [[Federal Signal Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Problems and criticism==
The sirens have met with sharp criticism from civil defense aficionados for a variety of reasons.

*Tone - ATI sirens, with the exception of the most recent models, used a 1000hz [[Sine wave|Sine]] wave, that creates a high pitched tone. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - In [[San Francisco, California]], many of their ATIs have the tone of an old Federal Signal STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. As few speakers can tolerate such low-pitched sounds, this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]

ATI HPSS

2010-02-16T05:10:39Z

75.8.230.54:

The ATI HPSS is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert people of Tornadoes, Hurricanes, Severe thunderstorms, fires and so on. It superseded an earlier rotating siren that ATI built. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as the [[Federal Signal Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Problems and criticism==
The sirens have met with sharp criticism from civil defense aficionados for a variety of reasons.

*Tone - ATI sirens, with the exception of the most recent models, used a 1000hz [[Sine wave|Sine]] wave, that creates a high pitched tone. In [[San Francisco, California]], however, many of their ATIs have the tone of an old Federal Signal STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - Many of San Francisco's ATIs have had blown speakers due to the low pitch STL-10 tone. In reality, no siren speakers can handle such low-pitched sounds, so this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]

ATI HPSS

2010-02-16T05:09:56Z

75.8.230.54:

The ATI HPSS is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert people of Tornadoes, Hurricanes, Severe thunderstorms, fires and so on. It superseded an earlier rotating siren that ATI built. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. Like other electronic outdoor warning systems (such as the [[Federal Signal]] [[Modulator]], for example), they can also be used as Public Announcement (PA) systems.

==Problems and criticism==
The sirens have met with sharp criticism from civil defense aficionados for a variety of reasons.

*Tone - ATI sirens, with the exception of the most recent models, used a 1000hz [[Sine wave|Sine]] wave, that creates a high pitched tone. In [[San Francisco, California]], however, many of their ATIs have the tone of an old Federal Signal STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - Many of San Francisco's ATIs have had blown speakers due to the low pitch STL-10 tone. In reality, no siren speakers can handle such low-pitched sounds, so this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]

ATI HPSS

2010-02-16T05:05:58Z

75.8.230.54: /* Problems and criticism */

The ATI HPSS is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert people of Tornadoes, Hurricanes, Severe thunderstorms,fires and so on. It superseced an earlier rotating siren that ATI built. The introduction date is unknown, but thought to be around 1980. It consists of 4 speakers on the HPSS16 model, and 8 on the HPSS32 model. They can also be used as PA speakers. Despite functioning decently as a PA system, the siren function has been riddled with faults.

==Problems and criticism==
The sirens have met with sharp criticism from civil defense aficionados for a variety of reasons.

*Tone - ATI sirens, with the exception of the most recent models, used a 1000hz [[Sine wave|Sine]] wave, that creates a high pitched tone. In [[San Francisco, California]], however, many of their ATIs have the tone of an old Federal Signal STL-10, which has caused reliability problems as the programmed tones are far too low-pitched for the speakers to handle. More recent ATI units use a improved, lower-pitched tone, which has given adequate results.

*Speakers - Many of San Francisco's ATIs have had blown speakers due to the low pitch STL-10 tone. In reality, no siren speakers can handle such low-pitched sounds, so this may not necessarily be the fault of the speakers used.
[[Category:Sirens]]