| System Name | Type | City |
|---|---|---|
| American Electric Power (AEP) P25 | Project 25 Phase II | Various |
| BearCom (South Texas NexEdge) | NXDN NEXEDGE 4800 | Various |
| Coastal Bend Regional Interoperability Network | Project 25 Phase II | Varies |
| Lower Rio Grande Valley Regional Radio System (LRGVRRS) | Project 25 Phase I | Varies |
| Nextel (Falfurrias) | Motorola Type I | Falfurrias |
