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26 May 2002

Timeline of this station (deactivated in 1999), derived from this excellent source on Naval Security Group stations:

http://www.anzwers.org/free/navyscpo/CI_Stations_past_and_present_alphabetical_4.html

20 Mar 1919 -- US Navy Radio Compass Station est.

1932 -- Renamed US Navy Direction Finder Station.

May 1940 -- Strategic DF station permanently est.

RFP during WWII. COMSEC #103.

1 Nov 1946 -- Renamed US Naval Radio Station and COMMSUPACT and COMMSECACT est.

1947 -- Renamed US Naval Communication Station Imperial Beach - COMMSUPACT and COMMSECACT disestablished.

7 Oct 1950 -- renamed Naval Radio Station (R)(S).

1953 -- NRS(S) became NAVSECGRUDept. of NCS San Diego OIC NRS(R) was also Head, NSGDept of NCS San Diego.

1971 -- Renamed Naval Radio Receiving Facility.

1 Oct. 1998 -- NSGDept. disest. and NSGA San Diego est. at NAS North Isl.

30 Sep.1999 -- NAVRADRECFAC HFDF site closed.

15 May 2002
Source: Mapquest.com

Eyeballing
the
Naval
Security
Group
Activity
Imperial
Beach





For scale of the Wullenberg antenna, about 250 yards in diameter, the dots in the cross are automobiles parked around a square building. Compare to photo at right which shows, perhaps, a single vehicle.
Source: FAS/USGS 1994.