Information for North Truro AFS, MA

Latitude: 42-02-03 N, Longitude: 070-03-15 W

Call Sign(s): Moonshine,No Trump, Man,Sleeper

Perm ID	Sage ID	JSS ID	Unit	Location	Early Equip.	Final Equip.	Oper. Date	Inact. Date	Notes
P-10	Z-10	J-53	762	North Truro AFS, MA	CPS-6B; CPS-3 (2); FPS-8/GPS-3; FPS-7; FPS-6 (2)/ -90; FPS-2	FPS-7; FPS-90; FPS-26A. FPS-91A, FPS-116 (JSS)	1951	JSS ARSR-4 site now	BUIC-III. FPS-7 later became FPS-107. TT-2 was an Annex. Had ALRI receiver. In early 1960s, was slated to be converted into an unmanned gap-filler annex, but this plan was cancelled. In the 1980s, was to have remained a blue-suit site (only), but is now shared with FAA (JSS).
P-10A	Z-10A			Westboro, MA	FPS-14		Jun-57	Jun-62	Gap-Filler Annex. Building is no longer extant, but the radar tower is. Located atop Fay Mountain south of town.
P-10B	Z-10B			Fort Dearborn, NH	FPS-14		Jun-57	Jun-68	Gap-Filler Annex. Formerly was LRR M-104, Rye AFS. Fort Dearborn was earlier a WWII coastal artillery facility.
P-14A / P-10D / P-13C				Moultonboro, NH **					Gap-Filler Annex. ** In early ADC plans, but never was built. Location is speculative.
P-45B / P-10E	Z-10E			Chilmark, MA	FPS-14		Jun-57	Jun-68	Gap-Filler Annex. Atop Peaked Hill, on Martha's Vineyard island (site of former WWII U.S. Army shore defense installation and Air Warning Station No. 6 {AWS #6}).

Perm ID

Sage ID

JSS ID

Unit

Location

Early
Equip.

Final
Equip.

Oper.
Date

Inact.
Date

Notes

P-10

Z-10

J-53

762

North Truro AFS, MA

CPS-6B; CPS-3 (2); FPS-8/GPS-3; FPS-7; FPS-6 (2)/ -90; FPS-2

FPS-7; FPS-90; FPS-26A. FPS-91A, FPS-116 (JSS)

1951

JSS ARSR-4 site now

BUIC-III. FPS-7 later became FPS-107. TT-2 was an Annex. Had ALRI receiver. In early 1960s, was slated to be converted into an unmanned gap-filler annex, but this plan was cancelled. In the 1980s, was to have remained a blue-suit site (only), but is now shared with FAA (JSS).

P-10A

Z-10A

Westboro, MA

FPS-14

Jun-57

Jun-62

Gap-Filler Annex. Building is no longer extant, but the radar tower is. Located atop Fay Mountain south of town.

P-10B

Z-10B

Fort Dearborn, NH

FPS-14

Jun-57

Jun-68

Gap-Filler Annex. Formerly was LRR M-104, Rye AFS. Fort Dearborn was earlier a WWII coastal artillery facility.

P-14A / P-10D / P-13C

Moultonboro, NH **

Gap-Filler Annex. ** In early ADC plans, but never was built. Location is speculative.

P-45B / P-10E

Z-10E

Chilmark, MA

FPS-14

Jun-57

Jun-68

Gap-Filler Annex. Atop Peaked Hill, on Martha's Vineyard island (site of former WWII U.S. Army shore defense installation and Air Warning Station No. 6 {AWS #6}).

History of North Truro AFS, MA

The 762nd AC&W Squadron began operations with a pair of AN/CPS-3 radars at this Cape Cod site in 1951, and assumed radar coverage previously covered by a Lashup site at Otis AFB (L-5). In 1955 these units were joined by an AN/FPS-8 model. Eventually converted to an AN/GPS-3, this radar left service in 1960. The years 1958 and 1959 saw the arrival of AN/FPS-6 and -6A height-finder radars. During this time, North Truro was integrated into the SAGE system. In 1960 the 762nd Radar Squadron started operating an AN/FPS-7 (later AN/FPS-107V2) radar. (Circa 1961, when the radar site at Fort Heath was added to the air-defense system, it was proposed that North Truro AFS be closed and converted into an unmanned Gap-Filler Annex; however, that plan was cancelled.) In 1963 the height-finder radars were replaced by AN/FPS-26A and AN/FPS-90 sets. The 762nd had the first BUIC-II system in the mid 1960s. The AN/FPS-90 was modified to an AN/FPS-116 circa 1977. The AN/FPS-26A was decommissioned in early 1979. In 1979 the site came under TAC jurisdiction. By 1985 AN/FPS-107 had been replaced by an AN/FPS-91A search set operated by the FAA. The AN/FPS-116 was removed circa 1988. In the late 1990s, an ARSR-4 replaced the AN/FPS-91A.

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

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