Fort Stevens Lashup Radar Site

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Fort Stevens Lashup Radar Site (1950-1952) - A Cold War Air Force Lashup Radar Site first established in 1950 on Fort Stevens, Clatsop County, Oregon. Named Fort Stevens Lashup Radar Site after the location. Initially assigned a Lashup ID of L-36. Abandoned in 1952.

Fort Stevens Guardhouse circa 1954, Headquarters for the 759th AC&W Squadron.
AN/CPS-5D Radar set antenna and tower on concrete roof of Battery Mishler circa 1950-52 (photo from USAF HQ/NORAD Historian) Note the West Battery Control Station in the background.
Battery Mishler Cut Out Model in the Fort Museum. Lower Rooms used by Radar Operations and Maintenance Crews.

History of Fort Stevens Lashup Radar Site

Supports for the Concrete Covers over the Old Gun Emplacements supporting the Radar Antennas.
Battery Mishler Shot Room, used by the Radar Squadron.

Established in September 1950, just after the start of the Korean War, and became operational later in 1950, manned by the 759th AC&W Squadron. The station initially had an early warning mission and a Ground Control Intercept mission. The early warning mission involved tracking and identifying all aircraft entering their airspace while the GCI mission involved guiding interceptor aircraft to their targets.

Initial equipment included the TPS-1B height-finder/search radar and a CPS-5 search radar mounted on top of Battery Mishler at Fort Stevens. The old gun emplacements had been covered over with a concrete roof when the battery was converted to an HECP during World War II. The unit headquarters was located in the Fort Stevens Guard House and the underground portion of Battery Mishler served as the operations and maintenance center for the squadron.

The 759th moved to Naselle Air Force Station Washington on 1 Jan 1951 but the Lashup site at Fort Stevens remained operational until February 1952.

Fort Stevens Lashup Radar Site
Major Equipment List
Radars Function Installed
TPS-1B Combo
CPS-5 Search

Current Status

Battery Mishler remains but the underground portion is only opened for guided tours on specific days and times, call the visitor center. The Guardhouse still stands and is generally open during park hours but call before visiting (update 2018 - the guardhouse appears to be vacant).

Location: Fort Stevens in Clatsop County, Oregon.

Maps & Images

Lat: 46.20694 Long: -123.96722

  • Multi Maps from ACME
  • Maps from Bing
  • Maps from Google
  • Elevation: .....'

GPS Locations:

See Also:


  • Cornett, Lloyd H. & Johnson, Mildred W., A Handbook of Aerospace Defense Organization (1946-1980), Office of History ADC, Peterson AFB, Colorado, 31 Dec 1980, 179 pages, Pdf, page 169.
  • Winkler, David F., Searching the Skies: the Legacy of the United States Cold War Defense Radar Program, USAF Hq Air Combat Command, 1997, 192 pages, Pdf, page 149.


Fortification ID:

  • OR0161 - Fort Stevens Lashup Radar Site

Visited: 24 Aug 2008, 18 May 2008

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