| System Name | Type | City |
|---|---|---|
| ATT (LTR) | LTR Standard | Various |
| California Department of Corrections and Rehabilitation | Project 25 Phase II | Various |
| California Radio Interoperable System (CRIS) | Project 25 Phase II | Various |
| Fisher Wireless TeamTalk | DMR Motorola Connect Plus (TRBO) | Various |
| Mobile Relay Associates SoCal NEXEDGE Digital Network | NXDN NEXEDGE 4800 | Multiple |
| Pacific Gas and Electric (PGE) | MPT-1327 Standard | Various |
| Silke Communications FleetNet | NXDN NEXEDGE 4800 | Various |
| Sterling Communications | LTR Standard | Arroyo Grande |
