| System Name | Type | City |
|---|---|---|
| American Electric Power (AEP) P25 | Project 25 Phase II | Various |
| American Electric Power (Eastern US) | EDACS Networked Standard | Multiple |
| Eastman Chemical Company | Project 25 Phase II | Multiple Cities |
| Land Air Communications (NXDN) | NXDN NEXEDGE 4800 | Various |
| Tennessee Advanced Communications Network (TACN) | Project 25 Phase II | Various |
| Tennessee BrandMeister Network | DMR Conventional Networked | Various |
| Tri-Cities Communications (CAP+) | DMR Motorola Capacity Plus Multi Site (TRBO) | Elizabethton |
