Difference between revisions of "Radio Numbering Specification"

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__FORCETOC__
 
__FORCETOC__
 +
 
==Overview==
 
==Overview==
 
In the Joint Electronics Type Designation System (JETDS) system, complete equipment sets or systems are designated with a sequence of letters and digits prefixed by '''AN/''', then three letters, a hyphen, a number, and (occasionally) some optional letters (AN/AAA-nnn suffixed by (Vn)- hardware/software version} or (T){training equipment} . The three letters tell where the equipment is used, what it does and its purpose. For example, the [[AN/PRC-77]] is a '''P'''ortable '''R'''adio used for two way '''C'''ommunications. The numbers for any given type of equipment are assigned sequentially, thus higher numbers indicate more modern systems.
 
In the Joint Electronics Type Designation System (JETDS) system, complete equipment sets or systems are designated with a sequence of letters and digits prefixed by '''AN/''', then three letters, a hyphen, a number, and (occasionally) some optional letters (AN/AAA-nnn suffixed by (Vn)- hardware/software version} or (T){training equipment} . The three letters tell where the equipment is used, what it does and its purpose. For example, the [[AN/PRC-77]] is a '''P'''ortable '''R'''adio used for two way '''C'''ommunications. The numbers for any given type of equipment are assigned sequentially, thus higher numbers indicate more modern systems.
  
−
<b>Radio Designation Example:</b>
+
<!---
 +
{{message|AN in Radio classifications Does ''NOT'' indicate "Army / Navy"|It is commonly stated that the AN in current electronic nomenclature means Army/Navy.  This is not the case, it only indicates that the device uses the JETDS classification system}}
 +
--->
 +
 
 +
The designation indicators are based on "Equipment", "Groups" and "Units".  These designators are used to describe what the equipment is and what it is used for.
 +
 
 +
==Sets or Equipment==
 +
===Equipment Indicator Example:===
 +
The following is an example of a set of equipment system, the full chart of definitions can be found at [[#Set or Equipment Indicator Letters|Set or Equipment Indicator Letters]] below.
 +
 
 +
;'''AN/VRC-12'''
 +
:AN = Designates that this device is categorized by the JETDS system
 +
:V = Ground Vehicular
 +
:R = Radio
 +
:C = Communications
 +
:12 = Model Number
  
−
{| class="wikitable" style="width:75%; border:2px solid black;"
 
−
!colspan="2" style="font-size:125%;"|'''AN/VRC-12'''
 
−
|-
 
−
| scope="row" style="border-top: 2px solid black;font-size:125%;" | AN
 
−
| style="border-top: 2px solid black;"|
 
−
|-
 
−
| scope="row" style="border-top: 2px solid black;font-size:125%;" | V
 
−
| style="border-top: 2px solid black;"| Ground Vehicular
 
−
|-
 
−
| scope="row" style="border-top: 2px solid black;font-size:125%;" | R
 
−
| style="border-top: 2px solid black;"| Radio
 
−
|-
 
−
| scope="row" style="border-top: 2px solid black;font-size:125%;" | C
 
−
| style="border-top: 2px solid black;"| Communications
 
−
|-
 
−
| scope="row" style="border-top: 2px solid black;font-size:125%;" | 12
 
−
| style="border-top: 2px solid black;"| Model Number
 
−
|}
 
  
 +
==Groups==
 +
Electronic Systems can be also organized into groups, these groups are classified by a two letter prefix indicating the purpose of the group.  The chart below [[#Group Indicators|Group Indicators]] defines these prefixes.
 +
 +
===Group Indicator Example===
 +
;'''OE-254/VRC'''
 +
:OE = Antenna groups
  
−
Military Component items can be identified by looking that the nomenclature prefix. These codes can be looked up in the chart below [[Component Nomenclature]].
+
Equipment indicator letters that follow the forward slash indicate the potential of the group for multiple or peculiar application use. For example: OE-254/VRC indicates an antenna group (OE) for Ground Vehicular Radio Communications (VRC). Equipment indicators with a specific model number, Example "OK-450/TRC-26" are used to indicate that the item can only be used with that specific equipment (e.g., AN/TRC-26) with no known potential for other use.
  
−
For Example:
 
  
−
*LS-671 = Speaker
+
==Units==
−
*H-250 = Head, hand, and chest sets
+
Military Component items can be identified by looking that the nomenclature prefix.  These codes can be looked up in the chart below [[#Unit Indicators|Unit Indicators]] to determine what they are.
−
*TA-312 = Telephone apparatus
 
  
 +
===Unit indicators Example===
 +
;LS-671 = Speaker
 +
;H-250 = Head, hand, and chest sets
 +
;TA-312 = Telephone apparatus
  
  
−
==Radio Designation Chart==
 
  
−
{| class="wikitable" style="width:75%; border:2px solid black;"
+
==Set or Equipment Indicator Letters==
 +
{| class="wikitable" style="width:50%; border:2px solid black;"
 
!colspan="2"| Radio Numbering Designations
 
!colspan="2"| Radio Numbering Designations
 
|-
 
|-
Line 124: Line 130:
  
  
−
==Component Nomenclature==
+
==Group Indicators==
 +
{| class="wikitable" style="width:50%; border:2px solid black;"
 +
!colspan="2"| Radio Numbering Designations
 +
|-
 +
! scope="col" |Indicator
 +
! scope="col" |Family Name
 +
|-
 +
|[[OA]]
 +
|Miscellaneous groups
 +
|-
 +
|OB
 +
|Multiplexer and/or demultiplexer groups
 +
|-
 +
|OD
 +
|Indicator groups
 +
|-
 +
|OE
 +
|Antenna groups
 +
|-
 +
|OF
 +
|Adapter groups
 +
|-
 +
|OG
 +
|Amplifier groups
 +
|-
 +
|OH
 +
|Simulator groups
 +
|-
 +
|OJ
 +
|Consoles and console groups
 +
|-
 +
|OK
 +
|Control groups
 +
|-
 +
|OL
 +
|Data analysis and data processing groups
 +
|-
 +
|OM
 +
|Modulator and/or demodulator groups
 +
|-
 +
|ON
 +
|Interconnecting groups
 +
|-
 +
|OP
 +
|Power supply groups
 +
|-
 +
|OQ
 +
|Test set groups
 +
|-
 +
|OR
 +
|Receiver groups
 +
|-
 +
|OT
 +
|Transmitter groups
 +
|-
 +
|OU
 +
|Converter groups
 +
|-
 +
|OV
 +
|Generator groups
 +
|-
 +
|OW
 +
|Terminal groups
 +
|-
 +
|OX
 +
|Coder, decoder, interrogator, transponder groups
 +
|-
 +
|OY
 +
|Radar set groups
 +
|-
 +
|OZ
 +
|Radio set groups
 +
|}
  
−
{| class="wikitable" style="width:75%; border:2px solid black;"
+
==Unit Indicators==
 +
{| class="wikitable" style="width:50%; border:2px solid black;"
 
!colspan="2"| Radio Unit Indicators
 
!colspan="2"| Radio Unit Indicators
 
|-
 
|-
Line 133: Line 212:
 
|-  
 
|-  
 
|AB  
 
|AB  
−
|Supports, antenna
+
|Supports, antenna. ([[AB - Antenna Base]])
 
|-
 
|-
 
|AM  
 
|AM  
−
|Amplifiers
+
|Amplifiers ([[AM - Amplifiers]])
 
|-
 
|-
 
|AS  
 
|AS  
−
|Antennas, complex and simple
+
|Antennas, complex and simple. ([[AS - Antenna Systems]])
 
|-
 
|-
 
|AT  
 
|AT  
−
|Antennas, simple
+
|Antennas, simple. ([[AT - Antenna Tip]])
 
|-
 
|-
 
|BA  
 
|BA  
−
|Batteries, primary type
+
|Batteries, primary type. ([[BA - Batteries]])
 
|-
 
|-
 
|BB  
 
|BB  
−
|Batteries, secondary type
+
|Batteries, secondary type. ([[BB - Storage Batteries]])
 
|-
 
|-
 
|BZ  
 
|BZ  
Line 154: Line 233:
 
|-
 
|-
 
|C  
 
|C  
−
|Controls  
+
|Controls, ([[C - Control]])  
 
|-
 
|-
 
|CA  
 
|CA  
−
|Commutator assemblies, sonar
+
|Commutator assemblies, sonar  
 
|-
 
|-
 
|CB  
 
|CB  
 
|Capacitor banks
 
|Capacitor banks
 +
|-
 +
|CC
 +
| Cable Assembly, RF
 +
|-
 +
|CD
 +
|Controlling Device
 
|-
 
|-
 
|CG  
 
|CG  
Line 187: Line 272:
 
|-
 
|-
 
|CW  
 
|CW  
−
|Radomes
+
| Covers, morphed into Radomes. ([[CW - Covers]])
 
|-
 
|-
 
|CX  
 
|CX  
Line 193: Line 278:
 
|-
 
|-
 
|CY  
 
|CY  
−
|Cases and cabinets
+
|Cases and cabinets, ([[CY - Case]])
 
|-
 
|-
 
|D  
 
|D  
Line 200: Line 285:
 
|DA  
 
|DA  
 
|Loads, dummy
 
|Loads, dummy
 +
|-
 +
|DI
 +
|Data Transmission Device
 
|-
 
|-
 
|DT  
 
|DT  
 
|Detecting heads
 
|Detecting heads
 +
|-
 +
|DU
 +
|Display Unit/Monitor
 
|-
 
|-
 
|DY  
 
|DY  
−
|Dynamotors
+
|Dynamotors ([[DY- Dynamotor]])
 
|-
 
|-
 
|E  
 
|E  
Line 215: Line 306:
 
|FN  
 
|FN  
 
|Furnitures
 
|Furnitures
 +
|-
 +
|FO
 +
|Fiber Optics Device
 
|-
 
|-
 
|FR  
 
|FR  
Line 220: Line 314:
 
|-
 
|-
 
|G  
 
|G  
−
|Generators, power
+
|Generators, power, ([[G - Power Generator]])
 
|-
 
|-
 
|GO  
 
|GO  
Line 226: Line 320:
 
|-
 
|-
 
|GP  
 
|GP  
−
|Ground rods
+
|Ground rods. ([[GP - Ground Pins]])
 
|-
 
|-
 
|H  
 
|H  
−
|Head, hand, and chest sets
+
|Head, hand, and chest set, ([[H - Handset]])
 
|-
 
|-
 
|HC  
 
|HC  
Line 238: Line 332:
 
|-
 
|-
 
|ID  
 
|ID  
−
|Indicators, non-cathode-ray tube
+
|Indicators, ([[ID - Indicators]]), non-[[cathode-ray tube]]
 
|-
 
|-
 
|IL  
 
|IL  
Line 247: Line 341:
 
|-
 
|-
 
|IP  
 
|IP  
−
|Indicators, cathode-ray tubes
+
|Indicators, [[cathode-ray tube]]s, ([[IP - Indicator Unit (cathode ray tube)]])
 
|-
 
|-
 
|J  
 
|J  
−
|Interface units
+
|Interface units, ([[J - Interface Units]])
 +
|-
 +
|KG
 +
|Key Generator
 
|-
 
|-
 
|KY  
 
|KY  
 
|Keying devices  
 
|Keying devices  
 +
|-
 +
|LA
 +
|Laser
 
|-
 
|-
 
|LC  
 
|LC  
−
|Tools, line-construction  
+
|Tools, line-construction, ([[LC - Line Construction]])
 +
|-
 +
|LM
 +
|Lamp. ([[LM - Lamp]])
 
|-
 
|-
 
|LS  
 
|LS  
−
|Loudspeakers
+
|Loudspeakers, ([[LS - Loud Speaker]])
 
|-
 
|-
 
|M  
 
|M  
−
|Microphones
+
|Microphones, ([[M - Microphones]])
 
|-
 
|-
 
|MA  
 
|MA  
Line 271: Line 374:
 
|-
 
|-
 
|ME  
 
|ME  
−
|Meters
+
|Meters, ([[M - Meters]])
 
|-
 
|-
 
|MF  
 
|MF  
Line 280: Line 383:
 
|-
 
|-
 
|ML  
 
|ML  
−
|Meteorological devices
+
|Meteorological devices, ([[ML - Meteorology]])
 +
|-
 +
|MO
 +
|Multipurpose Unit, ([[MO - Multipurpose Unit]])
 
|-
 
|-
 
|MT  
 
|MT  
−
|Mountings
+
|Mountings, ([[MT - Mount]])
 
|-
 
|-
 
|MU  
 
|MU  
 
|Memory units
 
|Memory units
 +
|-
 +
|MW
 +
|Microwave Device
 
|-
 
|-
 
|MX  
 
|MX  
−
|Miscellaneous
+
|Miscellaneous, ([[MX - Miscellaneous]])
 
|-
 
|-
 
|O  
 
|O  
Line 307: Line 416:
 
|-
 
|-
 
|PG  
 
|PG  
−
|Pigeon articles
+
|Pigeon articles, ([[PG - Pigeon]])
 
|-
 
|-
 
|PH  
 
|PH  
−
|Photographic articles
+
|Photographic articles, ([[PH - Photographic]])
 
|-
 
|-
 
|PL  
 
|PL  
−
|Plug-in units
+
|Plug-in units, ([[PL - Plug]])
 
|-
 
|-
 
|PP  
 
|PP  
−
|Power supplies
+
|Power supplies, ([[PP - Power pack]])
 
|-
 
|-
 
|PT  
 
|PT  
Line 322: Line 431:
 
|-
 
|-
 
|PU  
 
|PU  
−
|Power equipments
+
|Power equipments, ([[PU - Power Unit]])
 
|-
 
|-
 
|R  
 
|R  
−
|Receivers
+
|Receivers, ([[R - Receiver]])
 +
|-
 +
|RB
 +
|Robotics
 
|-
 
|-
 
|RC  
 
|RC  
Line 331: Line 443:
 
|-
 
|-
 
|RD  
 
|RD  
−
|Recorder-reproducers
+
|Recorder-reproducers, ([[RD - Recorders]])
 
|-
 
|-
 
|RE  
 
|RE  
Line 343: Line 455:
 
|-
 
|-
 
|RL  
 
|RL  
−
|Reeling machines
+
|Reeling machines, ([[RL - Reel]])
 
|-
 
|-
 
|RO  
 
|RO  
Line 355: Line 467:
 
|-
 
|-
 
|RT  
 
|RT  
−
|Receivers and transmitters
+
|Receivers and transmitters, ([[RT - Receiver Transmitter]])
 
|-
 
|-
 
|S  
 
|S  
−
|Shelters
+
|Shelters, ([[S - Shelter]])
 
|-
 
|-
 
|SA  
 
|SA  
Line 364: Line 476:
 
|-
 
|-
 
|SB  
 
|SB  
−
|Switchboards
+
|Switchboards. ([[SB - Switchboards]])
 
|-
 
|-
 
|SG  
 
|SG  
Line 374: Line 486:
 
|SN  
 
|SN  
 
|Synchronizers
 
|Synchronizers
 +
|-
 +
|SS
 +
|Special Purpose Device
 
|-
 
|-
 
|ST  
 
|ST  
−
|Straps
+
|Straps, ([[ST - Strap]])
 
|-
 
|-
 
|SU  
 
|SU  
 
|Optical devices
 
|Optical devices
 +
|-
 +
|SY
 +
|Secure Speech Device
 
|-
 
|-
 
|T  
 
|T  
−
|Transmitters
+
|Transmitters, ([[T - Transmitter]])
 
|-
 
|-
 
|TA  
 
|TA  
−
|Telephone apparatus
+
|Telephone apparatus, ([[TA - Telephone Apparatus]])
 
|-
 
|-
 
|TB  
 
|TB  
Line 403: Line 521:
 
|-
 
|-
 
|TH  
 
|TH  
−
|Telegraph apparatus
+
|Telegraph apparatus, ([[TH - Telegraph apparatus]])
 
|-
 
|-
 
|TK  
 
|TK  
−
|Tool kits
+
|Tool kits, ([[TK - Tool Kit]])
 
|-
 
|-
 
|TL  
 
|TL  
−
|Tools
+
|Tools, ([[TL - Tools]])
 
|-
 
|-
 
|TN  
 
|TN  
Line 418: Line 536:
 
|-
 
|-
 
|TS  
 
|TS  
−
|Test units
+
|Test sets, ([[TS - Test Sets]])
 
|-
 
|-
 
|TT  
 
|TT  
−
|Teletypewriters and facsimile apparatus
+
|Teletypewriters and facsimile apparatus, ([[TT - Teletype]])
 
|-
 
|-
 
|TV  
 
|TV  
Line 436: Line 554:
 
|-
 
|-
 
|V  
 
|V  
−
|Vehicles
+
|Vehicles, ([[V - vehicles]])
 
|-
 
|-
 
|VS  
 
|VS  
Line 459: Line 577:
 
|Impedance-measuring devices
 
|Impedance-measuring devices
 
|}
 
|}
 +
 +
== Major Index==
 +
===Airborne===
 +
:A - Piloted Aircraft
 +
* [[Airborne Intercom Communication]]
 +
* [[Airborne Radar fire control]]
 +
* [[Airborne Radar Search]]
 +
* [[Airborne Radar Transmitter]]
 +
* [[Airborne Radar Navigation]]
 +
* [[Airborne Radar Receiver]]
 +
* [[Airborne Radio Auxiliary]]
 +
* [[Airborne Radio Communication]]
 +
* [[Airborne Radio Navigation]]
 +
* [[Airborne Radio W control]]
 +
* [[Airborne Special Maintenance]]
 +
* [[Airborne special special]]
 +
 +
===underwater===
 +
:B - Underwater Mobile (submarine)
 +
* [[Underwater Radio Communication]]
 +
===Air Transportable===
 +
:C - original
 +
 +
===Cryptographic===
 +
:C - Cryptographic Equipment (NSA use only) (was Air Transportable)
 +
 +
* [[air-transportable Radar Identification]]
 +
* [[air-transportable Radar Search]]
 +
* [[air-transportable Radar Navigation]]
 +
* [[air transportable Radio Communication]]
 +
* [[air-transportable Radio Direction]]
 +
* [[air transportable Radio Navigation]]
 +
 +
===Drone===
 +
:D - Pilotless Carrier (drone, UAV)
 +
* [[Drone Radar Navigation]]
 +
* [[Drone Radio Communication]]
 +
 +
===Fixed===
 +
:F - Fixed Ground
 +
* [[Fixed Radar Search]]
 +
* [[Fixed Radar Navigation]]
 +
* [[Fixed Radio Communication]]
 +
* [[Fixed Radio Navigation]]
 +
* [[Fixed Radio Receiver]]
 +
* [[Fixed Radio Transmitter]]
 +
* [[Fixed Special special]]
 +
* [[Fixed Telegraph Communication]]
 +
* [[Fixed Telephone Communication]]
 +
 +
===Ground===
 +
:G - General Ground Use
 +
* [[Ground Radar fire control]]
 +
* [[Ground Radar Search]]
 +
* [[Ground Radar Navigation]]
 +
* [[Ground Radio Accessory]]
 +
* [[Ground Radio Communication]]
 +
* [[Ground Radio Navigation]]
 +
* [[Ground Radio Receiver]]
 +
* [[Ground Radio Transmitter]]
 +
* [[Ground Special fire control]]
 +
* [[Ground Special Search]]
 +
* [[Ground Special special]]
 +
* [[Ground Telegraph Communication]]
 +
* [[Ground Telephone Accessory]]
 +
* [[Ground Telephone Communications]]
 +
 +
===Amphibious===
 +
:K - Amphibious
 +
* [[Amphibious Radio Communication]]
 +
===Mobile===
 +
:M - Ground Mobile
 +
* [[Mobile electromechanical special]], (power plants)
 +
* [[Mobile Countermeasures Special]],
 +
* [[Mobile Radar fire control]]
 +
* [[Mobile Radar Search]]
 +
* [[Mobile Radar Maintenance]]
 +
* [[Mobile Radar Navigation]]
 +
* [[Mobile Radar Special]]
 +
* [[Mobile Radio Communication]]
 +
* [[Mobile Radio Navigation]]
 +
* [[Mobile Radio Receiver]]
 +
* [[Mobile Radio Transmitter]]
 +
* [[Mobile Special Communication]]
 +
* [[Mobile Special fire control]]
 +
* [[Mobile Special special]]
 +
* [[Mobile Telegraph Communication]]
 +
* [[Mobile Telephone Communication]]
 +
 +
===Portable===
 +
:P - Human Portable
 +
* [[Portable Radar Search]]
 +
* [[Portable Radar Navigation]]
 +
* [[Portable Radiac Receiver]]
 +
* [[Portable Radio Communication]]
 +
* [[Portable Radio Direction]]
 +
* [[Portable Radio Navigation]]
 +
* [[Portable Radio Search]]
 +
* [[Portable Visual Search]]
 +
 +
===Seaborne===
 +
:S - Water (surface ship)
 +
* [[Seaborne Intercom communication]]
 +
* [[Seaborne Radar Accessory]]
 +
* [[Seaborne Radar fire control]]
 +
* [[Seaborne Radar Navigation]]
 +
* [[Seaborne Radar Search]]
 +
* [[Seaborne Radio Communication]]
 +
 +
===Transportable===
 +
:T - Transportable (ground)
 +
* [[Transportable Carrier Communication]]
 +
* [[Transportable Interphone special]]
 +
* [[Transportable Radar fire control]]
 +
* [[Transportable Radar Search]]
 +
* Transportable Radar Searchlight control, only one designator before dropped, [[AN~TPL-1]].
 +
* [[Transportable Radar special]]
 +
* [[Transportable Radar Navigation]]
 +
* [[Transportable Radar identification]]
 +
* [[Transportable Radio Communication]]
 +
* [[Transportable Radio Direction]]
 +
* [[Transportable Radio Navigation]]
 +
* [[Transportable Radio Receiver]]
 +
* [[Transportable Radio Transmitter]]
 +
* [[Transportable Special Communication]]
 +
* [[Transportable Special Maintenance]]
 +
* [[Transportable Special special]]
 +
* [[Transportable Telegraph Communication]]
 +
* [[Transportable Telephone Communication]]
 +
* [[Transportable Visual Search]]
 +
* [[TYA - Transportable data processing Auxiliary Assembly]]
 +
* [[TYQ - Transportable data processing Special]]
 +
 +
===Utility===
 +
:U - General Utility/Universal (multi use)
 +
 +
* [[Utility Intercom Communication]]
 +
* [[Utility Radar Accessory]]
 +
* [[Utility Radar Maintenance]]
 +
* [[Utility Radar Navigation]]
 +
* [[Utility Radio Communication]]
 +
* [[Utility Radio Maintenance]]
 +
* [[Utility Radio Receiver]]
 +
* [[Utility Radio Transmitter]]
 +
 +
===Vehicle===
 +
:V - Vehicle (ground)
 +
* [[Vehicle Intercom Communication]]
 +
* [[Vehicle Radar Search]]
 +
* [[Vehicle Radio Communication]]
 +
* [[Vehicle Radio Search]]
 +
 +
===Water===
 +
:W - Water Surface and Underwater combined
 +
* [[Water Radio Communication]]
 +
 +
===Aircraft===
 +
:Z - Piloted/Pilotless Airborne vehicles combined
 +
*

Latest revision as of 18:41, 30 August 2021


Overview

In the Joint Electronics Type Designation System (JETDS) system, complete equipment sets or systems are designated with a sequence of letters and digits prefixed by AN/, then three letters, a hyphen, a number, and (occasionally) some optional letters (AN/AAA-nnn suffixed by (Vn)- hardware/software version} or (T){training equipment} . The three letters tell where the equipment is used, what it does and its purpose. For example, the AN/PRC-77 is a Portable Radio used for two way Communications. The numbers for any given type of equipment are assigned sequentially, thus higher numbers indicate more modern systems.


The designation indicators are based on "Equipment", "Groups" and "Units". These designators are used to describe what the equipment is and what it is used for.

Sets or Equipment

Equipment Indicator Example:

The following is an example of a set of equipment system, the full chart of definitions can be found at Set or Equipment Indicator Letters below.

AN/VRC-12
AN = Designates that this device is categorized by the JETDS system
V = Ground Vehicular
R = Radio
C = Communications
12 = Model Number


Groups

Electronic Systems can be also organized into groups, these groups are classified by a two letter prefix indicating the purpose of the group. The chart below Group Indicators defines these prefixes.

Group Indicator Example

OE-254/VRC
OE = Antenna groups

Equipment indicator letters that follow the forward slash indicate the potential of the group for multiple or peculiar application use. For example: OE-254/VRC indicates an antenna group (OE) for Ground Vehicular Radio Communications (VRC). Equipment indicators with a specific model number, Example "OK-450/TRC-26" are used to indicate that the item can only be used with that specific equipment (e.g., AN/TRC-26) with no known potential for other use.


Units

Military Component items can be identified by looking that the nomenclature prefix. These codes can be looked up in the chart below Unit Indicators to determine what they are.

Unit indicators Example

LS-671 = Speaker
H-250 = Head, hand, and chest sets
TA-312 = Telephone apparatus


Set or Equipment Indicator Letters

Radio Numbering Designations
SEC DEF
AN
System Indicator
V
Installation Type (Where it is)
A - Piloted Aircraft
B - Underwater Mobile (submarine)
C - Cryptographic Equipment (NSA use only) (was Air Transportable)
D - Pilotless Carrier (drone, UAV)
F - Fixed Ground
G - General Ground Use
K - Amphibious
M - Ground Mobile
P - Human Portable
S - Water (surface ship)
T - Transportable (ground)
U - General Utility (multi use)
V - Vehicle (ground)
W - Water Surface and Underwater combined
Z - Piloted/Pilotless Airborne vehicles combined
R
Type of Equipment (What is it)
A - Invisible Light, Heat Radiation (e.g. infrared)
B - Comsec (NSA use only) (was Pigeon)
C - Carrier (electronic wave or signal)
D - Radiac (Radioactivity Detection, Identification, and Computation)
E - Laser (was NUPAC, Nuclear Protection & Control)
F - Fiber Optics (was Photographic)
G - Telegraph or Teletype
I - Interphone and Public Address
J - Electromechanical or inertial wire covered
K - Telemetering
L - Countermeasures
M - Meteorological
N - Sound in Air
P - Radar
Q - Sonar and Underwater Sound
R - Radio
S - Special or Combination
T - Telephone (Wire)
V - Visual, Visible Light
W - Armament (not otherwise covered)
X - Fax or Television
Y - Data Processing
Z - Communications (NSA use only)
C
Purpose (What it does)
A - Auxiliary Assembly
B - Bombing
C - Communications (two way)
D - Direction Finding, Reconnaissance and Surveillance
E - Ejection and/or Release
G - Fire Control or Searchlight Directing
H - Recording and/or Reproducing
K - Computing
L - no longer used. Was Searchlight Control, now covered by "G".
M - Maintenance or Test
N - Navigation Aid
P - no longer used. Was Reproducing, now covered by "H"
Q - Special or Combination
R - Receiving or Passive Detecting
S - Detecting, Range and Bearing, Search
T - Transmitting
W - Automatic Flight or Remote Control
X - Identification or Recognition
Y - Surveillance (target detecting and tracking) and Control (fire control and/or air control)
Z - Secure (NSA use only)
12
Equipment Specific Model Number


Group Indicators

Radio Numbering Designations
Indicator Family Name
OA Miscellaneous groups
OB Multiplexer and/or demultiplexer groups
OD Indicator groups
OE Antenna groups
OF Adapter groups
OG Amplifier groups
OH Simulator groups
OJ Consoles and console groups
OK Control groups
OL Data analysis and data processing groups
OM Modulator and/or demodulator groups
ON Interconnecting groups
OP Power supply groups
OQ Test set groups
OR Receiver groups
OT Transmitter groups
OU Converter groups
OV Generator groups
OW Terminal groups
OX Coder, decoder, interrogator, transponder groups
OY Radar set groups
OZ Radio set groups

Unit Indicators

Radio Unit Indicators
Indicator Family Name
AB Supports, antenna. (AB - Antenna Base)
AM Amplifiers (AM - Amplifiers)
AS Antennas, complex and simple. (AS - Antenna Systems)
AT Antennas, simple. (AT - Antenna Tip)
BA Batteries, primary type. (BA - Batteries)
BB Batteries, secondary type. (BB - Storage Batteries)
BZ Alarm units
C Controls, (C - Control)
CA Commutator assemblies, sonar
CB Capacitor banks
CC Cable Assembly, RF
CD Controlling Device
CG Cable assemblies, RF
CK Crystal kits
CM Comparators
CN Compensators
CP Computers
CR Crystals
CU Couplers
CV Converters
CW Covers, morphed into Radomes. (CW - Covers)
CX Cable assemblies, non-RF
CY Cases and cabinets, (CY - Case)
D Dispensers
DA Loads, dummy
DI Data Transmission Device
DT Detecting heads
DU Display Unit/Monitor
DY Dynamotors (DY- Dynamotor)
E Hoists
F Filter units
FN Furnitures
FO Fiber Optics Device
FR Frequency-measuring devices
G Generators, power, (G - Power Generator)
GO Goniometers
GP Ground rods. (GP - Ground Pins)
H Head, hand, and chest set, (H - Handset)
HC Crystal holders
HD Environmental apparatus (heating, cooling, etc.
ID Indicators, (ID - Indicators), non-cathode-ray tube
IL Insulators
IM Intensity-measuring devices
IP Indicators, cathode-ray tubes, (IP - Indicator Unit (cathode ray tube))
J Interface units, (J - Interface Units)
KG Key Generator
KY Keying devices
LA Laser
LC Tools, line-construction, (LC - Line Construction)
LM Lamp. (LM - Lamp)
LS Loudspeakers, (LS - Loud Speaker)
M Microphones, (M - Microphones)
MA Magazines
MD Modulators, demodulators, discriminators
ME Meters, (M - Meters)
MF Magnets or magnetic-field generators
MK Miscellaneous kits
ML Meteorological devices, (ML - Meteorology)
MO Multipurpose Unit, (MO - Multipurpose Unit)
MT Mountings, (MT - Mount)
MU Memory units
MW Microwave Device
MX Miscellaneous, (MX - Miscellaneous)
O Oscillators
OC Oceanographic devices
OS Oscilloscopes, test
PD Prime drivers
PF Fittings, pole
PG Pigeon articles, (PG - Pigeon)
PH Photographic articles, (PH - Photographic)
PL Plug-in units, (PL - Plug)
PP Power supplies, (PP - Power pack)
PT Mapping and plotting units
PU Power equipments, (PU - Power Unit)
R Receivers, (R - Receiver)
RB Robotics
RC Reels
RD Recorder-reproducers, (RD - Recorders)
RE Relay assemblies
RF RF components
RG Cables, RF bulk
RL Reeling machines, (RL - Reel)
RO Recorders
RP Reproducers
RR Reflectors
RT Receivers and transmitters, (RT - Receiver Transmitter)
S Shelters, (S - Shelter)
SA Switching units
SB Switchboards. (SB - Switchboards)
SG Generators, signal
SM Simulators
SN Synchronizers
SS Special Purpose Device
ST Straps, (ST - Strap)
SU Optical devices
SY Secure Speech Device
T Transmitters, (T - Transmitter)
TA Telephone apparatus, (TA - Telephone Apparatus)
TB Towed bodies
TC Towed cables
TD Timing devices
TF Transformers
TG Positioning devices
TH Telegraph apparatus, (TH - Telegraph apparatus)
TK Tool kits, (TK - Tool Kit)
TL Tools, (TL - Tools)
TN Tuning units
TR Transducers
TS Test sets, (TS - Test Sets)
TT Teletypewriters and facsimile apparatus, (TT - Teletype)
TV Testers, tube
TW Tape units
U Connectors, audio and power
UG Connectors, RF
V Vehicles, (V - vehicles)
VS Signaling equipment, visual
WD Cables, two-conductor
WF Cables, four-conductor
WM Cables, multiple-conductor
WS Cables, single-conductor
WT Cables, three-conductor
ZM Impedance-measuring devices

Major Index

Airborne

A - Piloted Aircraft

underwater

B - Underwater Mobile (submarine)

Air Transportable

C - original

Cryptographic

C - Cryptographic Equipment (NSA use only) (was Air Transportable)

Drone

D - Pilotless Carrier (drone, UAV)

Fixed

F - Fixed Ground

Ground

G - General Ground Use

Amphibious

K - Amphibious

Mobile

M - Ground Mobile

Portable

P - Human Portable

Seaborne

S - Water (surface ship)

Transportable

T - Transportable (ground)

Utility

U - General Utility/Universal (multi use)

Vehicle

V - Vehicle (ground)

Water

W - Water Surface and Underwater combined

Aircraft

Z - Piloted/Pilotless Airborne vehicles combined
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