View source for ARSR-4

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'''{{PAGENAME}} Long Range 3D Radar Set''' - A Long Range 3D Radar set built by Westinghouse and integrated into the FAA Air Traffic Control (ATC) system and jointly used by the USAF for Air Defense as a part of the [[JSS System]]. Approximate cost was $6.5 million each, total program cost was $800 million with one half paid by USAF. Forty-four systems were purchased and installed. The first set was commissioned on 12  April 1996 at Tamiami, Florida. The last set was accepted at Ajo, Arizona in July 1999. The ARSR-4 radar sites were primarily arranged along the U.S. Conus border to form a perimeter defense. The interior radar sites remained equipped with legacy radars until they were all upgraded by 2015 with Common Air Route Surveillance Radars ([[CARSR]]).

The ARSR-4 was designed in the late 1980s to replace then existing FPS-20/60 series vacuum-tube JSS System radar sets. The ARSR-4 is a solid state 3D radar with a limited ability to report aircraft altitudes.
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|width="50%"|<!--[[Image:.jpg|300px|thumb|left|ARSR-4 3D Radar]]-->
|width="50%"|<!--[[Image:.jpg|300px|thumb|right|ARSR-4 3D Radar]]-->
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|colspan="2"|[[File:North Truro ARSR-4 - 5.jpg|795px|thumb|center|North Truro Air Force Station Site, FAA ARSR-4 Radar.]]
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== ARSR-4 3D Radar ==
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[[File:ARSR-4 Radar.jpg|thumb|left|350px|ARSR-4 Radar Set Antenna and Pedestal.]]
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[[File:ARSR-4 Diagram.jpg|thumb|right|350px|ARSR-4 Functional Diagram.]]
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{| class="wikitable" width="400px"
|+ ARSR-4 3D Radar
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! Element
! Value
! Notes
|-
| Nomenclature || ARSR-4 ||
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| Origins || ||
|-
| Variants || ||
|-
| Manufacturer || Westinghouse ||
|-
| Type || 3D ||
|-
| Number Made|| 44 ||
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| IEEE Band || L ||
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| Frequency || 1215-1400MHz ||
|-
| PRF || 216 Low Stack<br>72 High Stack||
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| Pulse Width || 150 us || 
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| Rotation Speed || 5.0 RPM ||
|-
| Power || 65kw Peak<br>3.5kw Avg. || 
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| Range || 254nmi || Long Range
|-
| Altitude || 100k||
|-
| Introduced || 1996 First Accepted at Tamiami||
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| Completed || 1999 Last Accepted at Ajo||
|}
| width="50%" |
|}
<!--[[File:fffff System.png|thumb|center|800px|FPS-3 System Components]]-->

{{ARSR-4Components}}

{{ARSR-4Installations}}

'''See Also:'''
* [[US Radar Sets]]
* [[JSS System|JSS/FAA Radar Sites]]
* [[FAA En-Route Radar Site Maintenance Training]]

'''Sources:''' 
* {{Winkler}}
* [https://www.forecastinternational.com/archive/disp_pdf.cfm?DACH_RECNO=669 Forecast International - ARSR-4 (FPS-130)]
'''Links:''' 
* [http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.1015.481&rep=rep1&type=pdf Air Route Surveillance Radar Model 4 (ARSR-4) Operational Test and Evaluation (OT&E) Final Report May 1997]
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[[Category:Radar Sets]]
[[Category:ARSR-4]]