| 601 | 259 | D | Preston Co Fire | Fire - Dispatch | Fire Dispatch |
| 605 | 25d | D | Preston Co EMS | EMS - Dispatch | EMS Dispatch |
| 607 | 25f | D | Preston Co SO Dp | Sheriff - Dispatch | Law Dispatch |
| 623 | 26f | DE | Preston Co SO Tc | Sheriff - Tactical (encrypted) | Law Tac |
| 633 | 279 | D | Preston Co Tac 1 | Tactical - Ch. 1 | Multi-Tac |
| 635 | 27b | D | Preston Co Tac 2 | Tactical - Ch. 2 | Multi-Tac |
| 637 | 27d | D | Preston Co Tac 3 | Tactical - Ch. 3 | Multi-Tac |
| 639 | 27f | D | Preston Co Tac 4 | Tactical - Ch. 4 | Multi-Tac |
| 650 | 28a | D | Preston Co AnCtr | Animal Control | Public Works |
| 651 | 28b | D | Preston Co EMA | Emergency Management | Emergency Ops |
