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Joint Electronics Type Designation System

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Joint Electronics Type Designation System

The Joint Electronics Type Designation System (JETDS), which was previously known as the Joint Army-Navy Nomenclature System (AN System. JAN) and the Joint Communications-Electronics Nomenclature System, is a method developed by the U.S. War Department during World War II for assigning an unclassified designator to electronic equipment. In 1957, the JETDS was formalized in MIL-STD-196.

Computer software and commercial unmodified electronics for which the manufacturer maintains design control are not covered.

Electronic material, from a military point of view, generally includes those electronic devices employed in data processing, detection and tracking (underwater, sea, land-based, air and space), recognition and identification, communications, aids to navigation, weapons control and evaluation, flight control, and electronics countermeasures. The JETDS applies to equipment throughout the DoD and select NATO allies today. Nomenclature is assigned to:

This system is separate from the "M" designation used in the Army Nomenclature System (MIL-STD-1464A).

Items are given an Item Level which describes their hierarchy

The core of the JETDS system is the combination of a Type Designation with an Item Name to specify a particular item.

For example:

The type designation is a unique series of letters and numbers which specifies an item. There are three basic forms of type designator used:

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