Ground Equipment Facility J-33

Ground Equipment Facility J-33
(Mill Valley Air Force Station until 1980)
Part of
1951-1968: Air Defense Command

1968-1979: Aerospace Defense Command

1979-1980: Air Defense, Tactical Air Command
Mount Tamalpais West Peak, 3.1 miles (5.0 km) WNW of Mill Valley
The FAA sign for the facility
Coordinates37°55′26″N 122°35′49″W / 37.92389°N 122.59694°W / 37.92389; -122.59694 (Mill Valley AFS P-38)[1]
TypeAir Route Surveillance Radar
Site information
OwnerMarin Municipal Water District
Controlled byFederal Aviation Administration
Site history
Built1951
In use1951-1980 (USAF)
1980-present (FAA)
NORAD Control Centers
NCC 3d
NCC 3d
GATR R-18
GATR R-18
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The NORAD Control Center at Mill Valley AFS was connected to the Ground Air Transmit Receive site at Beale AFB[citation needed] by a pair of buried telephone cables, with a backup connection of dual telephone cables overhead.[citation needed] GATR R-18 was completed by an AMC Project Wild Goose team for providing SAGE TDDL and operational after April 1961.[2]
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Ground Equipment Facility J-33 is a Federal Aviation Administration (FAA) radar station of the Joint Surveillance System's Western Air Defense Sector (WADS) with an Air Route Surveillance Radar (ARSR-4). The facility was previously a USAF general surveillance radar station during the Cold War.

The site is located on West Peak of Mount Tamalpais, in Marin County, California.

  1. ^ "Information for Mill Valley AFS, CA". Radomes.org. Retrieved 2013-02-23.
  2. ^ McMullen, R. F. (15 Feb 1980). History of Air Defense Weapons 1946–1962 (Report). Vol. ADC Historical Study No. 14. Historical Division, Office of information, HQ ADC.