| System Name | Type | City |
|---|---|---|
| American Electric Power (AEP) P25 | Project 25 Phase II | Various |
| Greater Austin/Travis Regional Radio System (GATRRS) | Project 25 Phase II | Austin |
| Lower Rio Grande Valley Regional Radio System (LRGVRRS) | Project 25 Phase I | Varies |
| Mobile Relays, Inc. | LTR Passport | McAllen |
| Rio Communications | DMR Tier 3 Standard | Various |
| Rio Grande City Public Safety | Motorola Type II Smartnet | Rio Grande City |
| Tri County Communications (LTR Passport) | LTR Passport | Various |
