Air Defense Radar Stations

Information for Selfridge AFB, MI

Latitude: 42-37-40.5 N, Longitude: 082-49-45.1 W

Call Sign(s): Sylvia

Perm ID Sage ID JSS ID Unit Location Early
P-20 Z-20   661 Selfridge AFB, MI CPS-5; CPS-6(2); FPS-20; FPS-35; FPS-6, -6A (Air Force); [FP FPS-35; FPS-26A 1952 July 1974 USAF site shared with Army for Nike Missile air-defense system (D-15DC). Base is now an Air National Guard Base.
CG25 / P-20E Z-20E     Sparta, ON, CN         * Not listed in the early USAF ADC inventory, but shown on 1961 and 1962 ADC maps. Was constructed, but never became operational. The radar tower was sold to Workum Construction in Porcupine, ON, in 1964.
P-20A Z-20A     Burnside, MI FPS-14   Jun-57 Jun-68 Gap-Filler Annex. The radar building was torn down sometime between 2010 and 2013.
P-20B Z-20B     Emery, MI FPS-18   Feb-59 Jun-68 Gap-Filler Annex. Both the building and the radar tower (with radome) are still extant. The radar sail is still inside the dome.
P-20C Z-20C     Marblehead, OH FPS-18A   Nov-60 Jun-68 Gap-Filler Annex. Building is still extant.
P-20C       Flat Rock, MI ** (FPS-18 planned)       Gap-Filler Annex. ** Planned but not built.
P-20D       Vienna, ON, CN **         ** In original ADC plans, but never was built. Site designation is uncertain.
P-20D       Clyde, OH ** (FPS-18 planned)       Gap-Filler Annex. ** Planned but not built.
P-20F Z-20F     London, ON, CN         Planned Gap-Filler Annex. Not built. Replaced by Sparta, ON (P-20E) which was constructed (but was never operational).
P-67A / P-20G Z-67A / Z-20G     Midland, MI FPS-14   Nov-57 Dec-67 Gap-Filler Annex. Building is still extant.

Current Use: Air Museum

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