| 601 | 259 | D | Preston Co Fire | Fire - Dispatch | Fire Dispatch |
| 603 | 25b | D | Preston Co Court | County Court | Public Works |
| 605 | 25d | D | Preston Co EMS | EMS - Dispatch | EMS Dispatch |
| 607 | 25f | D | Preston Co SO Dp | Sheriff - Dispatch | Law Dispatch |
| 613 | 265 | D | Preston Co AllFD | Fire - All Call - Private | Fire-Talk |
| 617 | 269 | D | Preston Co AllLE | Law - All Call - Private | Law Talk |
| 623 | 26f | DE | Preston Co SO Tc | Sheriff - Tactical | Law Tac |
| 625 | 271 | DE | Preston Co EMSec | EMS - Secure | EMS-Tac |
| 627 | 273 | DE | PrestonCo EMAsec | Emergency Management Agency - Secure | Emergency Ops |
| 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 |
| 641 | 281 | D | Preston Co PTac1 | Police - Tactical - Ch. 1 | Law Tac |
| 643 | 283 | D | Preston Co PTac2 | Police - Tactical - Ch. 2 | Law Tac |
| 650 | 28a | D | Preston Co AnCtr | Animal Control | Public Works |
| 651 | 28b | D | Preston Co EMA | Emergency Management Agency | Emergency Ops |
| 653 | 28d | D | Preston Co Talk1 | Talk - Ch. 1 | Multi-Talk |
| 655 | 28f | D | Preston Co Talk2 | Talk - Ch. 2 | Multi-Talk |
| 657 | 291 | D | Preston Co Evt 1 | Event - Ch. 1 | Multi-Talk |
| 659 | 293 | D | Preston Co Evt 2 | Event - Ch. 2 | Multi-Talk |
| 661 | 295 | D | Preston Co Evt 3 | Event - Ch. 3 | Multi-Talk |
| 663 | 297 | D | Preston Co Evt 4 | Event - Ch. 4 | Multi-Talk |
| 699 | 2bb | D | Preston Co Hail | Hailing | Emergency Ops |
