Model 7: Difference between revisions

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{{Infobox siren
{{Infobox siren
|title = C3 1/2
|title = C3 1/2
[[File:Image (2).jpg|thumb|Original advertisements (?) for the Model 7, circa. late 1970's]]
[[File:Image (2).jpg|thumb|Advertisements for the C3 1/2, circa. late 1970s]]
|company =[[Federal Signal Corporation]]
|company =[[Federal Signal Corporation]]
|produced = 1938-1987
|produced = 1938-1987
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|deadurl=no
|deadurl=no
}}</ref>
}}</ref>
|hertz =690 (Single Tone) 690/517.5 (Dual Tone) <ref name="manual" />
|hertz = 533 (12-Port) 460 (8-port) 427/533 (9/12-Port) <ref name="manual" />
|neigh =7.5<ref name="manual" />
|neigh =5, 7.5, & 10<ref name="manual" />
|preceded = [[Model 5]] (1976)
|succeeded = [[STH-10]]
|manual = http://www.civildefensemuseum.org/sirens/manuals/2-5-SD10-STH10-STL10-255A154F.pdf
|manual = http://www.civildefensemuseum.org/sirens/manuals/2-5-SD10-STH10-STL10-255A154F.pdf
}}
}}




The C3 1/2, or commonly known as Model 7 or Model 5 was a 5, 7.5, and sometimes 10 horsepower, mechanical, omnidirectional siren produced by [[Federal Signal Corporation]] part of the Fedelcode lineup. The rotor in the C3 1/2 is 18" and shares it with the [[500DHTT]].
The C3 1/2, or commonly known as Model 7 or Model 5 was a 5, 7.5, and sometimes 10 horsepower, mechanical, omnidirectional siren produced by [[Federal Signal Corporation]] part of the Fedelcode lineup. The rotor in the C3 1/2 is 18" and shares it with the [[500 Series]] and [[SD-10]].


Model 7 was available in 3 different chopper configurations: 8 port single tone, 12 port single tone, and 9/12 port dual tone. The siren was housed in a very simple enclosure that resembles an air vent found on building roofs. The housing came in either painted steel or stainless steel.
Model 7 was available in 3 different chopper configurations: 8 port single tone, 12 port single tone, and 9/12 port dual tone. The siren was housed in a very simple enclosure that resembles an air vent found on building roofs. The housing came in either painted steel or stainless steel.

Latest revision as of 22:42, 18 June 2024

C3 1/2
Advertisements for the C3 1/2, circa. late 1970s
Company Federal Signal Corporation
Produced 1938-1987
Type Electromechanical
Sound output 113 or 108[1] dBc at 100 feet
Frequency 533 (12-Port) 460 (8-port) 427/533 (9/12-Port) [1] Hz
Horsepower 5, 7.5, & 10[1]
Preceded by Model 5 (1976)
Succeeded by STH-10
Documentation Manual


The C3 1/2, or commonly known as Model 7 or Model 5 was a 5, 7.5, and sometimes 10 horsepower, mechanical, omnidirectional siren produced by Federal Signal Corporation part of the Fedelcode lineup. The rotor in the C3 1/2 is 18" and shares it with the 500 Series and SD-10.

Model 7 was available in 3 different chopper configurations: 8 port single tone, 12 port single tone, and 9/12 port dual tone. The siren was housed in a very simple enclosure that resembles an air vent found on building roofs. The housing came in either painted steel or stainless steel.

  1. 1.0 1.1 1.2 (PDF) Service Manual for Models 2, 7, SD10, STH10, STL10. Federal Signal Corporation. Retrieved October 22, 2017.