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SCR-584 Anti-aircraft Defense System

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SCR-584 Radio Controlled System


Inside the trailer equipped with SCR-584 system.

Inside trailer equipped with SCR-584 system. Photo of display at the National Electronics Museum.

SCR-584 anti-aircraft radar was one of first U.S. weapon systems developed during in WWII.


The system's components included a highly accurate tracking radar, the M-9 gun director, IFF (Identify Friend or foe) antenna and electronics, and four anti-aircraft guns which fired shells equipped with a Proximity Fuze.


Westinghouse Electrics - SCR-584

Westinghouse Electrics in Baltimore made 19 different type of radar systems including the SCR-270 and the SCR-584.1


How the SCR-584 Worked

The SCR-584 system was housed in an experimental truck (XT-1) and was composed of several components.


The SCR-584 trailer with antenna.

Experimental truck (XT-1) which housed the SCR-584. USAAF photo.


A radar dish was placed on the roof top during operations or carried inside the truck during transport. During operations this dish followed and determined the exact position of a target and the IFF antenna verified whether the target was friend or foe.


Using information from the tracking radar and IFF, the M-9 dun director automatically aimed the four 90mm guns which had proximity fuzes installed on the shells. Once the guns were fired, the fuzes caused the shells to explode when they neared the target.


The SCR-584 and the V-1 Buzz Bomb


SSCR-584 truck, with radar controlled 90mm anti-aircraft guns using shells with proximity fuzes to shoot down V-1 buzz bombs.

SCR-584 truck, with radar controlled 90mm anti-aircraft guns using shells with proximity fuzes to shoot down V-1 buzz bombs. Painting on display at the National Electronics Museum.

The SCR-584 proved to be a highly effective system, having great success in a variety of battle situations. It was used to control American 90mm heavy artillery deployed against the V-1 Buzz Bombs and could track objects in any direction with near pinpoint accuracy and only minimal interference from German chaff [aluminum foil dropped from aircraft to confuse radar].2


Other SCR-548 Uses in WWII

Besides giving information to the M-9 gun director which controlled the anti-aircraft guns, the radar from the SCR-584 trailer also directed blind-flying dive bombers, fighters, and photo reconnaissance aircraft1.


Notes
1Information from signs at the National Electronics Museum.


2Robert Buderi, The Invention that Changed the World. New York: Simon & Schuster, 1996, p220.


Photos taken by WW2HQ staff with permission of the National Electronics Museum.



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SCR-584 Radar System Components

Tracking radar
*IFF antenna and electronics
M-9 gun director
Four anti-aircraft guns
Shells equipped with the Proximity Fuze.
*Identify Friend or foe

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