| AB |
Support, antennae |
| AM |
Amplifiers |
| AS |
Antennae (simple and complex) |
| BA |
Battery, primary type |
| BB |
Battery, secondary type |
| BZ |
Alarm units |
| C |
Controls |
| CA |
Computers auxiliary units |
| CD |
Controlling devices |
| CM |
Comparators |
| CN |
Compensators |
| CP |
Computers |
| CU |
Couplers |
| CV |
Converters (electronic) |
| CW |
Radomes |
| CX |
Cable assemblies (non RF) |
| CY |
Cases and cabinets |
| DA |
Load, dummy |
| DI |
Data transmission |
| DT |
Detecting heads |
| F |
Filter units |
| FO |
Fiber optics |
| FR |
Frequency measuring device |
|
| G |
Generators, power |
| H |
Head, hand, chest sets |
| HD |
Environmental apparatus |
| ID |
Indicator units (non CRT types) |
| IM |
Intensity measuring devices |
| IP |
Indicator units (CRT type) |
| KG |
Key generator |
| KY |
Keying devices |
| LA |
Laser |
| LS |
Loudspeakers |
| M |
Microphones |
| MD |
Modulators, demodulators and discriminators |
| ME |
Meters |
| MK |
Miscellaneous kits |
| ML |
Meteorological devices |
| MO |
Multipurpose |
| MT |
Mountings |
| MU |
Memory units |
| MW |
Microwave |
| MX |
Miscellaneous |
| O |
Oscillators |
| OE |
Antenna groups |
|
| PL |
Plug-in units |
| PP |
Power supplies |
| PU |
Power equipment |
| R |
Receivers |
| RB |
Robotics |
| RD |
Recorder-reproducers |
| RE |
Relay assembly units |
| RL |
Reeling machines |
| RO |
Recorders |
| RT |
Receiver transmitters |
| S |
Shelters |
| SA |
Switching units |
| SB |
Switchboard |
| SG |
Generator, signal |
| SM |
Simulators |
| SU |
Optical units |
| SY |
Speech, secure |
| T |
Transmitters |
| TA |
Telephone apparatus |
| TD |
Timing devices |
| TF |
Transformers |
| TH |
Telegraph apparatus |
| TN |
Tuning units |
| TR |
Transducers |
| TS |
Test units |
| TT |
Teletypewriters and facsimiles |
| ZM |
Impedance measuring devices |
|
