Information for Havre AFS, MT

Latitude: 48-52-51 N, Longitude: 109-56-42 W

Call Sign(s): Jesse, Fever Buck, Niblick

Perm ID	Sage ID	Unit	Location	Early Equip.	Final Equip.	Oper. Date	Inact. Date	Notes
P-25	Z-25	778	Havre AFS, MT	FPS-3; FPS-4; FPS-6; GPS-3; FPS-6B (FPS-90)	FPS-27; FPS-6	1952	01-Jul-79	BUIC-III. Earlier known as Simpson AFS. Plans for an AN/FPS-28 FD search radar were cancelled; an AN/FPS-27 FD search radar was installed instead.
P-25A	Z-25A		Galata, MT	FPS-14		Oct-57	Dec-60	Gap-Filler Annex. Located on Grassy Butte, 19 miles north of Galata, MT.
P-25B	Z-25B		Hogeland, MT	FPS-14		Oct-57	Dec-60	Gap-Filler Annex. Located 3.75 miles northeast of Hogeland, MT

Perm ID

Sage ID

JSS ID

Unit

Location

Early
Equip.

Final
Equip.

Oper.
Date

Inact.
Date

Notes

P-25

Z-25

778

Havre AFS, MT

FPS-3; FPS-4; FPS-6; GPS-3; FPS-6B (FPS-90)

FPS-27; FPS-6

1952

01-Jul-79

BUIC-III. Earlier known as Simpson AFS. Plans for an AN/FPS-28 FD search radar were cancelled; an AN/FPS-27 FD search radar was installed instead.

P-25A

Z-25A

Galata, MT

FPS-14

Oct-57

Dec-60

Gap-Filler Annex. Located on Grassy Butte, 19 miles north of Galata, MT.

P-25B

Z-25B

Hogeland, MT

FPS-14

Oct-57

Dec-60

Gap-Filler Annex. Located 3.75 miles northeast of Hogeland, MT

History of Havre AFS, MT

In 1952 the 778th AC&W Squadron began operating AN/FPS-3 and AN/FPS-4 radars at this site. The Air Force added an AN/GPS-3 circa late 1958 that stayed until 1965. The site was integrated into the SAGE system in 1961. In the early 1960s AN/FPS-6 and AN/FPS-6B radars took over height-finder duties. The AN/FPS-6B was upgraded to an AN/FPS-90 in 1964; it was deactivated in 1969. An AN/FPS-28 FD search radar was planned, but was subsequently cancelled. In 1965 an AN/FPS-27 replaced the AN/GPS-3 as the search radar. Havre AFS ceased operations on 1 July 1979, and the 778th Radar Squadron (SAGE) was deactivated in September 1979.

References: "Searching the Skies"; misc. ADCOM documents; eyewitness accounts.

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