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'''{{PAGENAME}} Long Range Search Radar Set''' - A Long Range frequency diversity search radar set built by Westinghouse. Designed to replace existing [[SAGE System]] radars that were more susceptible to enemy electronic countermeasures.  The FPS-27 was designed to operate in the S-band at 2322 to 2670 MHz to detect enemy aircraft at a maximum range of 220 nautical miles and a maximum altitude of 150,000 feet. Thirty one radar sites received FPS-27s, one prototype site, ten Canadian sites and twenty sites in the U.S.
'''{{PAGENAME}} Long Range Search Radar Set''' - A Long Range frequency diversity search radar set built by Westinghouse. Designed to replace existing [[SAGE System]] radars that were more susceptible to enemy electronic countermeasures.  The FPS-27 was designed to operate in the S-band at 2322 to 2670 MHz to detect enemy aircraft at a maximum range of 220 nautical miles and a maximum altitude of 150,000 feet. Thirty-one radar sites received FPS-27s, one prototype site, ten Canadian sites and twenty sites in the U.S.


The prototype site at [[Crystal Springs Air Force Station]] identified several problems that were fixed in subsequent installations. The [[Crystal Springs Air Force Station]] installation was also the only one on an open frame tower, all the others were housed in a multifour-story closed tower with a radome. Two additional sites had the towers built but were closed before the equipment was installed.
The prototype site at [[Crystal Springs Air Force Station]] identified several problems that were fixed in subsequent installations. The [[Crystal Springs Air Force Station]] installation was also the only one on an open frame tower, all the others were housed in a four-story closed tower with a radome. Two additional sites had the towers built but were closed before the equipment was installed.


Installation generally took about six months followed by a eight to ten month training period with a team of Westinghouse engineers. The installed facility cost approximately 5 million dollars.
Installation generally took about six months followed by an eight to ten month training period with a team of Westinghouse engineers. The installed facility cost approximately 5 million dollars.


Of the ten Canadian sites several remained operational into the 1980s and were modified with solid state components to improve reliability and lower maintenance costs.
Of the ten Canadian sites, several remained operational into the 1980s and were modified with solid state components to improve reliability and lower maintenance costs.
 
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|width="50%"|[[Image:.jpg|300px|thumb|left|FPS-27 Search Radar]]
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|colspan="2"|[[Image:.jpg|795px|thumb|center|FPS-27 Search Radar]]
|colspan="2"|[[File:FPS-27 Baldy Hughes Radar Site.jpg|thumb|center|800px|Baldy Hughes Radar Site, FPS-27 tower on left.]]
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== FPS-27 Search Radar ==
== FPS-27 Search Radar ==
{| width="800px"
{| width="800px"
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| Origins || ||
| Origins || ||
|-
|-
| Variants || ||
| Variants || FPS-27A/B||
|-
|-
| Manufacturer || Westinghouse ||
| Manufacturer || Westinghouse ||
|-
|-
| Type || Search ||
| Type || Search/height-finder ||
|-
|-
| Number Made|| 20 United States<br>10 Canada||
| Number Made|| 20 United States<br>10 Canada||
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| Frequency || 2322-2670 MHz ||
| Frequency || 2322-2670 MHz ||
|-
|-
| PRF || ||
| PRF || 226 to 288 ||
|-
|-
| Pulse Width || ||  
| Pulse Width || 6.5 micro seconds ||  
|-
|-
| Rotation Speed || ||
| Rotation Speed || 5 rpm ||
|-
|-
| Power || ||  
| Power || 15,000,000 Watts peak<br>30,000 Watts average||  
|-
|-
| Range || 220 nmi || Long Range
| Range || 220 nmi || Long Range
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| Altitude || 150k||
| Altitude || 150k||
|-
|-
| Introduced ||  ||
| Introduced || 1963 ||


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[[...jpg|thumb|left|350px|FPS-27]]
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[[File:FPS-27 System.png|thumb|center|800px|FPS-3 System Components]]


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<!--{{FPS-27Components}}-->
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'''Sources:'''  
'''Sources:'''  
* {{Winkler}}
* {{Winkler}}, page 79.
* MIL-HDBK-162A, 15 Dec 1965.
* MIL-HDBK-162A, 15 Dec 1965.


'''Links:'''  
'''Links:'''  
* [http://www.radomes.org/museum/parseequip.php?html=fps-27.html&type=equip_html Radomes - FPS-27 Radar Equipment]
* [[Bad Links]] /museum/parseequip.php?html=fps-27.html&type=equip_html FPS-27 Radar Equipment]
* [http://fas.org/nuke/guide/usa/airdef/an-fps-27.htm FAS - FPS-27]
* [http://fas.org/nuke/guide/usa/airdef/an-fps-27.htm FAS - FPS-27]
* [http://67.69.104.76:84/Pinetreeline/misc/equip/misc12g.html Pinetree Line FPS-27s]
* [http://67.69.104.76:84/Pinetreeline/misc/equip/misc12g.html Pinetree Line FPS-27s]
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{{PageFooter}}
{{PageFooter}}
[[Category:Radar Sets]]
[[Category:Radar Sets]]
[[Category:FPS-27]]

Latest revision as of 06:56, 29 May 2020

FPS-27 Long Range Search Radar Set - A Long Range frequency diversity search radar set built by Westinghouse. Designed to replace existing SAGE System radars that were more susceptible to enemy electronic countermeasures. The FPS-27 was designed to operate in the S-band at 2322 to 2670 MHz to detect enemy aircraft at a maximum range of 220 nautical miles and a maximum altitude of 150,000 feet. Thirty-one radar sites received FPS-27s, one prototype site, ten Canadian sites and twenty sites in the U.S.

The prototype site at Crystal Springs Air Force Station identified several problems that were fixed in subsequent installations. The Crystal Springs Air Force Station installation was also the only one on an open frame tower, all the others were housed in a four-story closed tower with a radome. Two additional sites had the towers built but were closed before the equipment was installed.

Installation generally took about six months followed by an eight to ten month training period with a team of Westinghouse engineers. The installed facility cost approximately 5 million dollars.

Of the ten Canadian sites, several remained operational into the 1980s and were modified with solid state components to improve reliability and lower maintenance costs.

Baldy Hughes Radar Site, FPS-27 tower on left.

FPS-27 Search Radar

FPS-27 Search Radar
Element Value Notes
Nomenclature FPS-27
Origins
Variants FPS-27A/B
Manufacturer Westinghouse
Type Search/height-finder
Number Made 20 United States
10 Canada
IEEE Band S
Frequency 2322-2670 MHz
PRF 226 to 288
Pulse Width 6.5 micro seconds
Rotation Speed 5 rpm
Power 15,000,000 Watts peak
30,000 Watts average
Range 220 nmi Long Range
Altitude 150k
Introduced 1963


FPS-27 Radar Sites (US/CAN) (edit list)
Site Type State Unit ADC SAGE Installed Removed GPS Notes
Armstrong AS ON 914th C-015 C-015 1963 1974 50.30528,
-89.01361
Baldy Hughes CFS BC 918th C-020 C-020 1963 1988 53.61833,
-122.93556
Barrington AS NS 672nd M-102 C-102 1961 1990 43.45167,
-65.47139
Bellefontaine AFS OH 664th P-073 Z-073 1964 1969 40.36984,
-83.72014 		Last U.S. FPS-27
Calumet AFS MI 665th P-016 Z-016 1963 1988 47.37111,
-88.17056
Chandler AFS MN 787th P-018 Z-018 1964 1969 43.89778,
-95.94583
Charleston AFS ME 765th P-065 Z-065 1963 1980 45.0896,
-69.09518 		First U.S. FPS-27
Condon AFS OR 636th P-032 Z-032 1964 1970 45.23667,
-120.30167
Crystal Springs AFS MS 627th TM-195 Z-195 1959 1968 31.97917,
-90.34444 		Prototype
Dana CFS SK 45 AC&W C-052 C-052 1964 1987 52.27833,
-105.76917
Finland AFS MN 756th P-069 Z-069 1963 1989 47.45361,
-91.2375
Gettysburg AFS SD 903rd M-099 Z-099 1963 1968 45.04972,
-99.95611
Gibbsboro AFS NJ 772nd RP-063 Z-063 1963-05 1984 39.82417,
-74.95444
Gypsumville CFS MB 47 AC&W C-049 C-049 1962 1987 51.66417,
-98.74194
Havre AFS MT 778th P-025 Z-025 1965 1979 48.88083,
-109.945
Klamath AFS CA 777th P-033 Z-033 1963 1981 41.55917,
-124.08611
Las Vegas AFS NV 865th SM-163 Z-163 1964 1970 36.31861,
-115.57528
Lowther CFS ON 639th M-119 C-119 1963 1987 49.55583,
-82.99194
Lyndonville AFS VT 911th M-103 Z-103 n/a n/a 44.66528,
-71.77111 		Tower only, no equipment
Miles City AFS MT 902nd M-098 Z-098 1964 1968 46.29694,
-105.97833 		FPS-27 sent to Mount Hebo AFS on closure
Minot AFB ND 786th P-028 Z-028 1964 1979 48.00361,
-101.29444
Moisie CFS QC 211 AC&W C-033 C-033 1963 1988 50.19417,
-66.08778
Mount Hebo AFS OR 689th M-100 Z-100 1969-09-30 1979 45.21583,
-123.75778 		Replacement for damaged FPS-24 from Miles City AFS
North Charleston AFS SC 792nd M-113 Z-113 1964 1980 32.89556,
-80.02222
Penhold CFS AB 43 AC&W C-054 C-054 1964 1986 52.18778,
-113.57806
Ramore CFS ON 912th C-010 C-010 1974 48.42694,
-80.241667
Roanoke Rapids AFS NC 632nd M-117 Z-117 1964 1978 36.43972,
-77.72528
San Pedro Hill AFS CA 670th RP-039 Z-039 1961 1976 33.746111,
-118.336111
Saratoga Springs AFS NY 656th P-050 Z-050 1963 1977 43.01139,
-73.6825
Sydney CFS NS 221 AC&W C-034 C-034 1966 1991 46.1675,
-60.16444
Watertown AFS NY 655th P-049 Z-049 1964 1979 43.92528,
-75.90917
Waverly AFS IA 788th P-083 Z-083 1964 1969 42.69,
-92.48444
Yuma AFB AZ 864th SM-162 Z-162 n/a n/a 32.65381,
-114.59090 		Tower only, no equipment

See Also:

Sources:

  • Winkler, David F., Searching the Skies: the Legacy of the United States Cold War Defense Radar Program, USAF Hq Air Combat Command, 1997, 192 pages, Pdf, page 79.
  • MIL-HDBK-162A, 15 Dec 1965.

Links:


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