| 03509 | Aircraft Communications Radio | Aircraft And Airport Equipment, Parts, And Supplies |
| 12028 | Communications Equipment, Marine | Boats, Motors, And Marine Equipment |
| 20420 | Communication Control Units: Concentrators, Multiplexers, Couplers, Scan Converters, etc. | Computer Hardware And Peripherals For Microcomputers |
| 20458 | Modems, External, Data Communications | Computer Hardware And Peripherals For Microcomputers |
| 28029 | Communications/Telecommunications Cable and Wire | Electrical Cables And Wires (Not Electronic) |
| 47025 | Communications Systems (For the Speech Impaired), Display Scanning Type | Hospital, Nursing Home Or Residential Specialized Equipment For The Handicapped And Disabled |
| 72616 | Antennas and Accessories (Radio Only): Brackets, Masts, Mount, Rotators, Standoffs, etc. (Including Aircraft, Vehicle and Marine Types) | Radio Communication Equipment, Accessories And Supplies |