MIL-STD-196F
multiple applications, the type designator after the solidus should be more general, such as OK-
198/G or OK-181/SL (see table II).
5.10 Type designators for definitive units.
5.10.1 Type designator for one end item use. The type designator for units having one end item consists of an indicator (table III), a dash, a number, a slant bar (solidus) and the type designator of the equipment it is "part of" or "used with" (i.e., Receiver, Radio R-40/VRC-12).
5.10.2 Type designator for multiple usage. The type designator for units having multiple usages is the same as specified in 5.5.1, except following the slant bar only those indicators which are common or appropriate should appear. For example, a Power Supply that is "part of" or "used with" the AN/VRC-12 and AN/VRC-19 is identified as a PP-50/VRC. A Power Supply which is "part of" the AN/VRC-12 and "used with" the AV/VRR-40 is identified as PP-60/VR. Alternately, a power supply which is "part of" or "used with" the AN/GRC-26 and AN/GPS-20
is identified as the PP-70/G.
5.10.3 Type designator for dual item name. The indicator for a unit having a dual item name is selected to identify the primary function which is listed first (i.e., Amplifier-Power Supply, AM-
250/U). When an indicator exists for a unit having a dual name, such as "RT" for Receiver- Transmitter and "PU" for Motor-Generator, the indicator appearing in table III is used.
5.11 Non listing of complement data. Definitive unit level nomenclature should not list complement data. Complement data is shown for items designated as a kit or variable unit if applicable.
5.12 Type designator for variable systems, subsystems, centers, centrals, sets, groups, and units.
5.13 Designator by parenthetical (V). Systems, subsystems, centers, centrals, set, or groups with variable component data are assigned type designators in the same manner as for definitive versions, except that the parenthetical V, (V), is added to the type designator. Some examples include an AN/FSG-1(V), and OT-1957(V)/APQ-73V.
5.14 Relationship of a variable to a higher level item of which it is a part. A higher level item shall only be a variable (V), if different variables of the lower variable item are included in the higher item's configuration.
5.15 Complement data for variable assignments. Variable item level nomenclature requires variability in complement data. This can be expressed in two ways as follows:
a. The complement data in Block 14.7 of the Request for Nomenclature, DD Form 61, shows at least one item as a variable quantity.
b. If any nomenclature complement data has been assigned to a variable (V), and more than one of the configurations can be used in the higher level item, then the higher unit level becomes a variable requiring assignment of a parenthetical (V).
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