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Statements

Subject Item
dbr:Black_Point-Green_Point,_California
dbo:wikiPageWikiLink
dbr:Black_Point_Communications_Annex
Subject Item
dbr:Black_Point_Communications_Annex
rdf:type
wikidata:Q41176 geo:SpatialThing owl:Thing dbo:ArchitecturalStructure dbo:Building
rdfs:label
Black Point Communications Annex
rdfs:comment
The Black Point Communications Annex was an antenna array and off-site radio communications annex located in Novato, California, 1.5 miles from Black Point, from which it gained its name. It is located 4 miles north of Hamilton Field, a position that was chosen due to its close proximity to a major air force hub. Due to the property having been privately owned, the federal government had to use eminent domain twice to acquire the land, first in 1939 and again in 1957 in order to expand the array. In 1952, both the Hamilton Air Force Base and the Black Point Communications Annex were declared "Permanent Installations" by the United States Air Force, but their usefulness had already begun to decline, and on January 11, 1976, the General Services Administration (GSA) was placed in charge. Eig
foaf:name
Black Point Communications Annex
dbp:name
Black Point Communications Annex
geo:lat
38.08797073364258
geo:long
-122.5098876953125
foaf:depiction
n13:Black_Point_Communications_Annex_Control_Room_1505.jpg n13:Black_Point_Communications_Annex_Control_Room_Exterior.jpg n13:Black_Point_Communications_Annex_Control_Room_1501_Interior.jpg
dct:subject
dbc:Antennas_(radio)
dbo:wikiPageID
70635893
dbo:wikiPageRevisionID
1112484699
dbo:wikiPageWikiLink
dbr:Black_Point-Green_Point,_California n8:Black_Point_Communications_Annex_Control_Room_1505.jpg n8:Black_Point_Communications_Annex_Control_Room_Exterior.jpg dbr:United_States_Air_Force dbr:Eminent_domain dbr:Novato,_California dbc:Antennas_(radio) dbr:State_of_california dbr:Hamilton_Army_Airfield dbr:General_Services_Administration dbr:Antenna_array n8:Black_Point_Communications_Annex_Control_Room_1501_Interior.jpg
owl:sameAs
n4:GRwNK wikidata:Q111962549
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dbt:Infobox_building dbt:Coord dbt:Refimprove
dbo:thumbnail
n13:Black_Point_Communications_Annex_Control_Room_Exterior.jpg?width=300
dbp:alternateNames
Hamilton Field Radio Range Station
dbp:coordinates
°05'16.7"N 122°30'35.6"W
dbp:cost
15341
dbp:locationCountry
United States
dbp:locationTown
Novato, California
dbp:startDate
1939
dbp:status
Abandoned
georss:point
38.08797222222222 -122.5098888888889
dbo:abstract
The Black Point Communications Annex was an antenna array and off-site radio communications annex located in Novato, California, 1.5 miles from Black Point, from which it gained its name. It is located 4 miles north of Hamilton Field, a position that was chosen due to its close proximity to a major air force hub. Due to the property having been privately owned, the federal government had to use eminent domain twice to acquire the land, first in 1939 and again in 1957 in order to expand the array. In 1952, both the Hamilton Air Force Base and the Black Point Communications Annex were declared "Permanent Installations" by the United States Air Force, but their usefulness had already begun to decline, and on January 11, 1976, the General Services Administration (GSA) was placed in charge. Eight years later, they sold the former Black Point Communication Annex to the State of California. Many of the buildings are still intact, such as an electrical power station, 2 transmitting building/control rooms, a generator room, and most of the antennae. Some of the other buildings that were built out of wood or corrugated steel are reduced to foundations. The land on which the array is located is overgrown, and visibly different from the fields and pastures that surround it.
prov:wasDerivedFrom
wikipedia-en:Black_Point_Communications_Annex?oldid=1112484699&ns=0
dbo:wikiPageLength
3021
dbo:alternativeName
Hamilton Field Radio Range Station
dbo:buildingStartDate
1939
dbo:status
Abandoned
foaf:isPrimaryTopicOf
wikipedia-en:Black_Point_Communications_Annex
geo:geometry
POINT(-122.50988769531 38.087970733643)
Subject Item
wikipedia-en:Black_Point_Communications_Annex
foaf:primaryTopic
dbr:Black_Point_Communications_Annex