TSEC-

This article may be deleted soon.
	To oppose or discuss a nomination, please go to CZ:Proposed for deletion and follow the instructions. For the monthly nomination lists, see Category:Articles for deletion. Due to technical limitations, this article uses an unusual title. It should be called  TSEC/ prefix. Most U.S. government-approved, in communications security (COMSEC) equipment has designations in the form TSEC/KG-99, in which TSEC/ (note slash) is purely an identification for a designation system, not an abbreviation. The designation system is under the control of the National Security Agency (NSA). It complements the AN/ system used for general military electronics, which does reserve certain of the letters in the AN/ system are reserved for NSA use. While the designation system codes are quite complex and still contain special cases, the basic structure is: First letter: What is its function? Second letter: What information or physical materials does it process? Optional third letter: What kind of component is it? The next numbers indicate a main model number within the series, followed by a bewildering and inconsistent set of version levels, alternate configurations, etc. Sometimes, what may seem an incremental improvement gets an entirely new model number, while a radical change may get a version change only. In other words, grasp the general principles of the system, but know that you will have to examine a specific system to understand its designation nuances. TSEC/KG-13 is a cryptographic key generator (code name PONTUS) TSEC/KY-57 was a cryptographic speech encryptor (code name VINSON) TSEC/KW-7 was a cryptographic key encryptor for asynchronous character data (i.e., "Teletype") (code name ORESTES) Designation system codes Letter Function Type Assembly A - - Advancing B - - Base of cabinet C COMSEC equipment - Combining D - - Drawer or Panel E - - Strip or Chassis F - - Frame or Rack G General purpose Key generation - H Cryptographic ancillary - Keyboard I - Data transmission Translator or Reader J - - Speech Processing K Cryptographic - - L - Literal conversion Repeater M Manufacturing - Memory or Storage N Non-cryptographic Signal conversion - O - Multipurpose Observation P - Materials Production Power Q - - - R - - Receiver S Special purpose Special purpose Synchronizing T - Testing, checking, maintenance Transmitter U - Television Printer V - - Removable communications security component W - Teletypewriter Logic Programmer or Programming X - Facsimile Special purpose Y - Speech (ciphony) - Z - - References