Cuban HM01 page + DIGTRX decoder
Der Deutsche Freiheitssender 904 (DFS 904)
Mystery Signals of the Short Wave
Now on the radio (includes Asian numbers stations)
VARIOUS
Sozvezdie. Manufacturer of the Serdolik System
U.S. Clandestine Radio Equipment
CRYPTO
Foundation for German communication and related technologies
INTELLIGENCE AGENCIES
British Foreign and Commonwealth Office
Canadian Communications Security Establishment
Centro Nacional de Inteligencia (Spain)
CTIVD - Dutch Intelligence Commission
Drug Enforcement Administration
Federal Bureau of Investigation
Federal Security Service (FSB)
German Bundesamt fuer Verfassungsschutz
Gov. Communications Security Bureau
MIVD - Dutch Military Intelligence
National Reconnaissance Office
Russian Foreign Intelligence Service (SVR)
Security Intelligence Review Committee
U.N. Crime & Justice Information Network
Wikipedia List of Intelligence Agencies
INTELLIGENCE RELATED
898 Verbindingsbataljon RadioCie
American Foreign Policy Council
Encyclopedia of Espionage, Intelligence, and Security
Federation of American Scientists
Library of Congress Country Studies
SCD - Der SAS- und Chiffrierdienst
Spylopedia - the Internet Spy encyclopedia
Virtual Library Regional Studies
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