ECHELON consists of a global network of computers that automatically search
through millions of intercepted for pre-programmed keywords or fax, telex and
e-mail addresses. Every word of every message in the frequencies and channels
selected at a station is automatically searched. The processors in the network
are known as the ECHELON Dictionaries. ECHELON connects all these computers and
allows the individual stations to function as distributed elements an integrated
system. An ECHELON station's Dictionary contains not only its parent agency's
chosen keywords, but also lists for each of the other four agencies in the
UKUSA system [NSA, GCHQ, DSD, GCSB and CSE]

Menwith Hill, UK ( 52º 52" N, 03º 03" W )



ECHELON ?