AN/FPS-7, 7A, 7B, 7C, 7D


In the mid-1950s, General Electric developed a radar with a search altitude of 100,000 feet and a range of 270 miles. This radar was significant in that it was the first stacked-beam radar to enter into production in the United States. Designed to operate in the L-band at 1250 to 1350 MHz, the radar deployed in late 1959 and the early 1960s. The AN/FPS-7 was used for both air defense and air traffic control in New York, Kansas City, Houston, Spokane, San Antonio, and elsewhere. In the early 1960s, a modification called AN/ECP-91 was installed to improve its electronic countermeasure (ECM) capability. About thirty units were produced.

Sites using FPS-7 systems

Perm ID
Sage ID
Location Model Notes
SM-159
Z-159
Aiken AFS, SC 7C  
TM-181
Z-181
Ajo AFS, Luke-Williams Range, AZ 7C  
C-53
C-53
Alsask AS, SK, CN 7C, 107  
M-118
Z-118
Burns AFS, OR 7B replaced by FPS-66A
P-2
Z-2
Cambria AFS, CA 7C, 107V2  
P-56
Z-56
Cape Charles AFS, VA 7B  
P-80
Z-80
Caswell AFS, ME 7C, 107V2  
TM-196
Z-196
Dauphin Island AFS, AL 7  
P-34
Z-34
Empire AFS, MI 7  
M-115
Z-115
Fort Fisher AFS, NC 7C, 107V2  
P-9
Z-9
Highlands AFS, NJ 7 first fielded model
TM-179
Z-179
Kalispell AFS, MT 7B  
P-64
Z-64
Kirksville AFS, MO 7C  
P-21
Z-21
Lockport AFS, NY 7, 107V2  
M-129
Z-129
MacDill AFB, FL 7B, 7E  
P-44
Z-44
Makah AFS, WA 7A, 107V1  
P-38
Z-38
Mill Valley AFS, CA 7C, 107V2  
P-76
Z-76
Mount Laguna AFS, CA 7C, 7E  
P-12
Z-12
North Bend AFS, OR 7, 107V2  
P-10
Z-10
North Truro AFS, MA 7, 107V2  
P-26
Z-26
Opheim AFS, MT 7C, 107V2  
P-35
Z-35
Osceola AFS, WI 7, 107  
P-40
Z-40
Othello AFS, WA 7C, 107  
C-19
C-19
Puntzi Mountain AS, BC, CN 7C, 107  
P-53
Z-53
Rockville AFS, IN 7B  
P-14
Z-14
Saint Albans AFS, VT 7C, 107V2  
C-16
C-16
Sioux Lookout AS, ON, CN 7C, 107  
TM-201
Z-201
Sundance AFS, WY 7C  
SM-164
Z-164
Tonopah AFS, NV 7C  
C-51
C-51
Yorkton AS, SK, CN 7C, 107