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The Federal Signal SD-10 was a dual-toned, 9/12 port, 10HP electromechanical siren produced by the Federal Sign & Signal Corporation. It shared the same rotor and stator assembly with the Model 5AT/5BT. It was produced from the late 1950's to the late 70's where it was discontinued. There were 2 models produced: The SD-10A is the most common model and is powered by 240V 3-phase power and the SD-10B which runs off of 240V single-phase power. It produces a sound of 109dB at 100 feet, and weighed about 500 pounds. Here is an SD-10 siren test-https://m.youtube.com/watch?v=PQ6rzb6jwh4

Specifications[]

Ports: 9/12

RPM: 3450RPM full speed

dB rating at 100 feet: 109dB

Motor type: 10HP electric induction motor

Power requirements for SD-10A: 208/240Vac 3-phase, 28/14A, 50/60hz

Power requirements for SD-10B: 240Vac single-phase, 56A, 60hz only

Motor starter: Federal RC5 motor starter required to operate.

Diameter: 46"

Height: 80" (with metal legs)

Cities that currently use SD-10 sirens[]

Adrian, Missouri

Allen, Texas (most have been removed and replaced with Federal Signal 2001s)

Arlington, Illinois (probably got replaced)

Athens, Michigan (Used as a tornado siren)

Amarillo, Texas (Only one remains and is tested once a month)

Beaver Dam, Wisconsin (Only one remains and is tested once a month)

Bellevue, Nebraska

Bloomington, Minnesota SD-10s have been replaced with FS 2001s

Branson, Missouri (Slowly getting replaced)

Bryon Center, Michigan

Burlington, Iowa (Used as a tornado siren)

Campbelltown, Pennsylvania (Volunteer Fire Dept)

Centralia, Missouri

Collinsville, Illinois (Slowly getting replaced with Whelens along with the STH-10s).

Corcoran Minnesota 1 standing operational

Cushing, Oklahoma

Deerfield, New York (Operates as a fire siren for the Volunteer Fire Dept.)

Halesite, New York (Operates as a fire siren)

Earleville, Maryland (Operates as a fire alert signal) ...And more.

Eatonville Washington (Operates as a fire siren)

East Saint Louis, Illinois

Hacks Point, Maryland

Hazel, South Dakota

Hubbard, Ohio (Used as a tornado siren)

Hugo, Colorado

Galesburg, Illinois

Kaalea, Hawaii (Status of siren(s) unknown, most likely removed)

Latham, New York (for Latham FD, on the property of Southgate Elementary School)

LaOtto, Indiana

La Porte City, Iowa

Lawton, Oklahoma (Used as a tornado siren)

Leopold, Indiana (Used as a tornado siren)

Limon, Colorado

Maple Plain Minnesota 3 standing all deactivated replaced by only one 2001-130

Mayville, Wisconsin

Medford, Minnesota

Minneapolis, Minnesota one standing inactive but not replaced

Mulberry Grove, Illinois

Murphysboro, Illinois

Norman, Oklahoma

Oxford, Georgia (Used as a tornado siren)

Pea Ridge, Arkansas

Richfield, Minnesota SD 10S have been replaced

Richfield, Nebraska

Sarpy County, Nebraska

Swan Creek County, Michigan (Inactive, located at the corner of M-52 and Swan Creek Road at the Fire station. There is a 2001-130 nearby, presumably the SD-10's replacement

Trappe, Pennsylvania (Used as a fire siren. Chopper cover missing but still active)

Tucson, Arizona (Used for the Cold War) at least one is still tested once a month, most have been removed

White Planes, New York (inactive)

Des Moines, IA CD system consisted of 8 SD-10's, removed in the late 1990's

Amarillo, Texas (some are removed mostly some still remain today)

Fresno, California (Used for the Cold War, Inactive)

Los Angeles, CA (they were used for the cold war disconnected in the late 1980's)

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