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  • The TSEC/KW-26, code named ROMULUS, was an encryption system used by the U.S. Government and, later, by NATO countries. It was developed in the 1950s by the National Security Agency (NSA) to secure fixed teletype circuits that operated 24 hours a day.
  • IZT COMINT: Real-Time RF Environment Simulation System
  • here is no such thing as the Enigma. In fact, Enigma is the brand name of a series of cipher machines, developed before and during WWII, some of which are compatible with each othe....
  • The TSEC/KL-7 Cipher Machine simulator. A realistic freeware simulation of the KL-7 with hands-on approach, including extensive manual, including the technical details and history of the KL-7
  • Radio Fingerprinting. 1960's to 21st century. World War Two. From an old timer's memoirs : The USN radio intelligence organization grew from 75 officers, ... No attribution
  • Radio Fingerprinting was the analysis of frequency & amplitude modulations to determine similarities and distinctions. ....
  • CFS Masset was the modern Canadian Signals Intelligence collection station, located at Masset, BC, on the Queen Charlotte Islands, approximately 75 miles off the West Coast of the mainland. Includes historical photos.
  • The EL/I-3001 is multi-platform, multi-mission Airborne Integrated Signal Intelligence System (AISIS). The system is designed to cope with the challenges of ...
  • The ThinkRF WSA4000 Wireless Signal Analyzer is a software-defined RF receiver platform that operates over the frequency range 20 to 7000 MHz and is designed...
  • The Maritime SIGINT Architecture Technical Standards Handbook (MSH) provides essentia information for acquisition managers, engineers and other individuals responsible for acquiring,
    developing or modernizing tactical Maritime SIGINT Systems (MSS). Collaboratively developed by elements of the U.S. Navy, U.S. Marine Corps, U.S. Special Operations Command, and the
    National Security Agency, it is the first effort by the maritime partners to establish cohesive
    standards for their tactical SIGINT systems.


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