Appendix I: AN Nomenclatures - U.S. Joint Electronics Type Designation System (JETDS)

摘要

The U.S. Department of Defense's official nomenclature equipment identification system is formally known as the Joint Electronics Type Designation System (JETDS), although it is more commonly called the "AN" designation system, referring back to the days when AN stood for "Army/Navy." The first three letters following the "AN/" usually indicate: 1. The platform on which the equipment is installed. 2. What type of equipment it is. 3. The function, purpose, or application of the equipment. The (V) sometimes placed after a designation means that there are variable configurations or models of that particular system, such as the AN/SSQ-53B and AN/SSQ-53F. The various configurations would usually be listed as A, B, C, and so forth. An (X) usually indicates that the system is in initial development. A number in parenthesis following the designation, such as AN/SSQ-53F(1), indicates the number of variants of that particular configuration for that specific series or family of equipment. Note that Forecast International generally does not use the AN prefix in equipment designations because it confuses alphabetical listings, and because some of our products are sold electronically, in which case the prefix could complicate the word search capability.