CSID Washington DC Ground Station Exclusion Zones
FCC has issued licenses in the 17.8-20.2 GHz band to networks in the Digital Electronic Messaging Service (DEMS) that
include both the Denver and Washington areas. Since co-frequency, co-coverage use of the 17.8-20.2
GHz band by earth stations of the Government fixed-satellite service and the non-Government
DEMS would not be possible within 40 km of the national security earth stations, DoD, through NTIA, requested and obtained special exclusion zones around these areas.
For Washington, D.C., the exclusionn zones are defined by 178 Km radius around 384800 N 0765200 W), which is the southeast corner of the air fields at Andrews AFB, and a box defined
by the corners NE = 384000 N 0785000 W and SW = 381000 N 0792000 W), which is bounded on its west side by the NSA Sugar Grove facility.
Sources
SUBJECT: 18 GHz Exclusion/Coordination Zones MEMORANDUM FOR
NTIA/OSM ASSOCIATED ADMINISTRATOR, MR PARLOW from
DEPARTMENT OF THE AIR FORCE AF Frequency Managment Agency (HQ
USAF) 3 March, 1997
http://www.fas.org/spp/military/program/sigint/csid_dc.htm
Maintained by Robert Sherman
Originally created by John Pike
Updated Friday, March 14, 1997