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AN (Army / Navy) Equipment Indicators
These AN (Army/Navy) equipment indicators are built of the "AN" prefix, a slash, and then the three-letter descriptors.
Example: AN/MPN-14: Ground, mobile, radar, navigational aid (the kind I worked on in the U.S. Air Force).
AN = Army/Navy
M = Ground Mobile
P = Radar
N = Navigational Aid
-14 = Number in the series
Refer to AN Component Designators for replacements to the AN indicator.
Example: AN/MPN-14: Ground, mobile, radar, navigational aid (the kind I worked on in the U.S. Air Force).
AN = Army/Navy
M = Ground Mobile
P = Radar
N = Navigational Aid
-14 = Number in the series
Refer to AN Component Designators for replacements to the AN indicator.
| 1st Letter Designated Installation Classes | 2nd Letter Type Of Equipment | 3rd Letter Purpose |
| A - Airborne (installed and operated in aircraft) | A - Invisible light, heat radiation | A - Auxiliary assemblies (not complete operating sets used with, or part of, two or more sets or sets series |
| B - Underwater mobile, submarine | B - Pigeon | B - Bombing |
| C - Air transportable (inactivated, do not use) | C - Carrier | C - Communications (receiving and transmitting |
| D - Pilotless Carrier | D - Radiac | D - Direction finder, reconnaissance, and/or surveillance |
| E - Nupac | E - Ejection and/or release | |
| F - Fixed | F - Photographic | |
| G - Ground, general ground use (include two or more ground-type installations) | G - Telegraph or teletype | G - Fire-control or searchlight directing |
| H - Recording and/or reproducing (graphic meteorological and sound | ||
| I - Interphone and public address | ||
| J - Electromechanical or inertial wire covered | ||
| K - Amphibious | K - Telemetering | K - Computing |
| L - Countermeasures | L - Searchlight control (Inactivated, use G) | |
| M - Ground, mobile (installed as operating unit in a vehicle which has no function other than transporting the equipment) | M - Meteorological | M - Maintenance and test assemblies (including tools) |
| N - Sound in air | N - Navigational aids (including altimeters, beacons, compasses, rapcons, depth sounding, approach and landing | |
| P - Pack or portable (animal or man) | P - Radar | P - Reproducing (inactivated, do not use) |
| Q - Sonar and underwater sound | Q - Special, or combination of purposes | |
| R - Radio | R - Receiving, passive detecting | |
| S - Water surface craft | S - Special types, magnetic, etc., or combinations of types | S - Detecting and/or range and bearing, search |
| T - Ground, transportable | T - Telephone wire | T - Transmitting |
| U - General utility (includes two or more general installation classes, airborne, shipboard, and ground) | ||
| V - Ground, vehicular (installed in vehicle designed for functions other than carrying electronic equipment, etc., such as tanks) | V - Visual and visible light | |
| W - Water surface and underwater | W - Armament (peculiar to armament, not otherwise covered) | W - Automatic flight or remote control |
| X - Facsimile or television | X - Identification and recognition | |
| Y - Data processing |
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