Information for Miles City AFS, MT

Latitude: 46-17-49 N, Longitude: 105-58-42 W

Call Sign(s): Whole Wheat, Underlay

Perm ID	Sage ID	Unit	Location	Early Equip.	Final Equip.	Oper. Date	Inact. Date	Notes
M-98	Z-98	902	Miles City AFS, MT	MPS-7; MPS-14; FPS-20/-66; FPS-6B	FPS-27; FPS-90	1955	18-Jun-68	After site deactivation, the FPS-27 search radar was sent to Mt. Hebo AFS to replace the FPS-24 there.
M-98B	Z-98B		Brockway, MT	FPS-18		Sep-59	Dec-60	Gap-Filler Annex.
TM-177A / M-98A	Z-98A		Glendive, MT	FPS-18		Sep-58	Dec-60	Gap-Filler Annex. Located 5 miles SE of Glendive, MT, with access through Makoshika State Park.

Perm ID

Sage ID

JSS ID

Unit

Location

Early
Equip.

Final
Equip.

Oper.
Date

Inact.
Date

Notes

M-98

Z-98

902

Miles City AFS, MT

MPS-7; MPS-14; FPS-20/-66; FPS-6B

FPS-27; FPS-90

1955

18-Jun-68

After site deactivation, the FPS-27 search radar was sent to Mt. Hebo AFS to replace the FPS-24 there.

M-98B

Z-98B

Brockway, MT

FPS-18

Sep-59

Dec-60

Gap-Filler Annex.

TM-177A / M-98A

Z-98A

Glendive, MT

FPS-18

Sep-58

Dec-60

Gap-Filler Annex. Located 5 miles SE of Glendive, MT, with access through Makoshika State Park.

History of Miles City AFS, MT

Beneficial occupancy was achieved at this Phase I Mobile Radar site in late 1954. By August 1955 the 902nd AC&W Squadron was operating an AN/MPS-7 search radar and an AN/MPS-14 height-finder radar. In 1958 an AN/FPS-20 radar replaced the AN/MPS-7. In 1961 this set was upgraded and redesignated as an AN/FPS-66. Also in 1961 an AN/FPS-6B height-finder radar was installed, and the site joined the SAGE system. In 1965, the site received an AN/FPS-27 search radar, replacing the AN/FPS-66. The

AN/MPS-14 was removed in 1967. The 902nd Radar Squadron (SAGE) was deactivated in June 1968. [Its AN/FPS-27 radar set was then shipped to Mt. Hebo AFS, OR (Z-100) and installed there, replacing the troublesome AN/FPS-24 which had recently lost its third radome.]

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

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