Information for Williams Bay AFS, WI

Latitude: 42-37-01 N, Longitude: 088-32-19 W

Call Sign(s): Pagan

Perm ID	Sage ID	JSS ID	Unit	Location	Early Equip.	Final Equip.	Oper. Date	Inact. Date	Notes
P-31			755	Williams Bay AFS, WI	CPS-6B (2); FPS-6		late 1951	30-Jun-60	Sq relocated to RP-31, Arlington Heights AI, IL; William Bay AFS became gap-filler site RP-31F (SW corner of site).
P-31D / RP-31D	Z-31D			Monee, IL	FPS-18 *		Mar-62	Jun-68	Gap-Filler Annex. * ADC records list an ''FPS-14'' radar; however, squadron historical reports (1961) list ''FPS-18.'' Building is the FPS-18 style, and is still extant; the radar tower has been removed.

Perm ID

Sage ID

JSS ID

Unit

Location

Early
Equip.

Final
Equip.

Oper.
Date

Inact.
Date

Notes

P-31

755

Williams Bay AFS, WI

CPS-6B (2); FPS-6

late 1951

30-Jun-60

Sq relocated to RP-31, Arlington Heights AI, IL; William Bay AFS became gap-filler site RP-31F (SW corner of site).

P-31D / RP-31D

Z-31D

Monee, IL

FPS-18 *

Mar-62

Jun-68

Gap-Filler Annex. * ADC records list an ''FPS-14'' radar; however, squadron historical reports (1961) list ''FPS-18.'' Building is the FPS-18 style, and is still extant; the radar tower has been removed.

History of Williams Bay AFS, WI

In late 1951 the 755th AC&W Squadron began operating a pair of AN/CPS-6B radars. An AN/FPS-6 height-finder radar was added in 1959. This station ceased operations in January 1960 when the 755th Radar Squadron relocated to the Army radar site at Arlington Heights, IL (MM-4). Williams Bay AFS itself was designated to become a gap-filler radar site, and a new building was built for this purpose at the SW corner of the site; however, it appears that the gap-filler radar was never installed.

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

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