Mill Valley Radar Domes - Description and Pictures

Building 409, Radar Dome (search tower) circa 1951. 35 foot diameter, white, spherical dome on four-level square tower clad in corrugated steel. Rubber and nylon skin on metal frame enclose turning reflector. Original radar equipment replaced about 1982. This is still a working radar and for safety reasons it was not photographed on the interior.

Building 411, Radar Dome (height finder tower). Built in 1961 for FPS-26 height finder radar. Spherical dome made from small, triangular, fiberglass panels attached to metal frame. Dome sits on three-level square tower clad in corrugated steel. Interior airlock remains from original inflatable dome. Interior now empty. Dome scheduled to be rebuilt slightly larger for new Air Route Surveillance Radar (ARSR) 4 equipment. Interior now empty. Dome scheduled to be rebuilt slightly larger for new ARSR 4 equipment.

Mill Valley Early Warning Radar Station DISTANT VIEW OF RADAR DOMES, STRUCTURE 409 ON THE RIGHT AND 411 ON THE LEFT, LOOKING NORTHEAST.
Distant View Of Radar Domes, Structure 409 On The Right And 411 On The Left, Looking Northeast.

Mill Valley Early Warning Radar Station EXTERIOR SITE VIEW OF STRUCTURE 408 AND RADOME 409 ON RIGHT, LOOKING NORTHEAST.
Exterior Site View Of Structure 408 And Radome 409 On Right, Looking Northeast.

Mill Valley Early Warning Radar Station EXTERIOR VIEW OF THE NORTHEAST RADAR DOME COMPLEX, STRUCTURE 411, LOOKING NORTH.
Exterior View Of The Northeast Radar Dome Complex, Structure 411, Looking North.

Mill Valley Early Warning Radar Station EXTERIOR VIEW OF RADOME, STRUCTURE 411, LOOKING SOUTHWEST.
Exterior View Of Radome, Structure 411, Looking Southwest.

Mill Valley Early Warning Radar Station INTERIOR OF RADOME 411 WITH HEIGHT FINDER RADAR NOW REMOVED, LOOKING SOUTH.
INterior Of Radome 411 With Height Finder Radar Now Removed, Looking South.

Mill Valley Early Warning Radar Station DETAIL VIEW OF RADOME AIR LOCK HATCHES IN STRUCTURE 411, LOOKING NORTHEAST.
Detail View Of Radome Air Lock Hatches In Structure 411, Looking Northeast.

Mill Valley Early Warning Radar Station DETAIL VIEW OF THE STRUCTURE OF STRUCTURE 411, LOOKING SOUTH.
Detail View Of The Structure Of Structure 411, Looking South.

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