| System Name | Type | City |
|---|---|---|
| American Electric Power (AEP) P25 | Project 25 Phase II | Various |
| Caprock Communications | LTR Passport | McCamey |
| Chesapeake Energy | LTR Standard | McCamey |
| Greater Austin/Travis Regional Radio System (GATRRS) | Project 25 Phase II | Austin |
| Occidental Petroleum Corporation | DMR Tier 3 Standard | Various |
| Oncor Energy | Project 25 Phase II | Various |
| Pro Communications (NEXEDGE) | NXDN NEXEDGE 4800 | Various |
| Twin Cities Communications (McCamey) | LTR Standard | McCamey |
