| Cumberland County Public Safety | Cumberland | Public Safety | 39 |
| Penobscot County Public Safety | Penobscot | Public Safety | 27 |
| Lincoln County Fire/EMS and Police | Lincoln | Public Safety | 21 |
| Piscataquis County Sheriff and Fire | Piscataquis | Public Safety | 19 |
| Kennebec, Somerset, and Waldo County Fire Departments | Kennebec | Public Safety | 13 |
| Auburn and Lewiston Fire and EMS | Androscoggin | Public Safety | 12 |
| Sebago Lakes Region and Oxford County Fire and EMS | Cumberland | Public Safety | 10 |
| Penobscot, Waldo, Knox County Public Safety | Knox | Public Safety | 8 |
| South Portland Police and Fire/EMS Dispatch | Cumberland | Public Safety | 8 |
| Aroostook County, Fort Kent, Madawaska, Grand Isle - Public Safety | Aroostook | Public Safety | 7 |
| Knox County Fire and EMS Dispatch | Knox | Public Safety | 7 |
| Portland Fire | Cumberland | Public Safety | 5 |
| Aroostook/Houlton Area Public Safety | Aroostook | Public Safety | 5 |
| Kittery Police Department | York | Public Safety | 4 |
| Hancock County Public Safety | Hancock | Public Safety | 4 |
| Gardiner Fire Rescue | Kennebec | Public Safety | 3 |
| Calais Public Safety | Washington | Public Safety | 3 |
| South Berwick Police, Fire, and York Ambulance | York | Public Safety | 3 |
| Mount Desert Island Public Safety | Hancock | Public Safety | 3 |
| Yarmouth Fire, Cumberland and Freeport Fire | Cumberland | Public Safety | 3 |
| Old Orchard Beach | York | Public Safety | 3 |
| Falmouth Police, Fire and EMS | Cumberland | Public Safety | 2 |
| Scarborough Fire | Cumberland | Public Safety | 2 |
| Winthrop Ambulance, Fire & Police and Monmouth Police | Kennebec | Public Safety | 2 |
| Oakland, Rome, & Belgrade Fire Departments | Kennebec | Public Safety | 1 |
| Milbridge Fire | Washington | Public Safety | 1 |
| Somerset County Fire | Somerset | Public Safety | 1 |
| Anson and Madison Fire | Somerset | Public Safety | 1 |
| Farmingdale, Pittston, Randolph and West Gardiner Fire Departments | Kennebec | Public Safety | 1 |
| Monmouth Fire Department | Kennebec | Public Safety | 1 |
| Pleasant Point Fire | Washington | Public Safety | 1 |
| Franklin County Fire | Franklin | Public Safety | 1 |
| Androscoggin County Sherriff | Androscoggin | Public Safety | 1 |
| Cherryfield FireRescue | Washington | Public Safety | 1 |
| York and Cumberland County Public Safety | Cumberland | Public Safety | 1 |
| Waterboro and Alfred Fire/EMS | York | Public Safety | 1 |
| Freeport Fire and Rescue | Cumberland | Public Safety | 1 |
| Brunswick Fire | Cumberland | Public Safety | 1 |
| Bar Harbor, MDI and Acadia Police, Fire, EMS, Park Rangers | Hancock | Public Safety | 1 |
| Kennebunkport Fire Department | York | Public Safety | 1 |
| York Maine Fire Departments | York | Public Safety | 1 |
| Addison Fire | Washington | Public Safety | 0 |
| York County Fire | York | Public Safety | 0 |
| Alfred & Waterboro Fire / Rescue, York County Sheriff, Maine State Police South | York | Public Safety | 0 |
| Pembroke Volunteer Fire | Washington | Public Safety | 0 |
| Buxton Fire-Rescue and Buxton Police | York | Public Safety | 0 |
| Eastport Fire | Washington | Public Safety | 0 |
| Washington County Fire | Washington | Public Safety | 0 |
| Steuben Fire | Washington | Public Safety | 0 |
| Wells Fire | York | Public Safety | 0 |
| AllStar Node 50281 | York | Amateur Radio | 0 |
| Sanford Police | York | Public Safety | 0 |
| Downeast EMS | Washington | Public Safety | 0 |
| Albion Fire-Rescue | Kennebec | Public Safety | 0 |
| Princeton Fire | Washington | Public Safety | 0 |
| Danforth Fire | Washington | Public Safety | 0 |
| Harrington VFD | Washington | Public Safety | 0 |
| Naples Fire Rescue | Cumberland | Public Safety | 0 |
| Amtrak, CSXT, Saint Lawrence & Atlantic and other southern Maine railroads | Androscoggin | Rail | 0 |
| Turner Fire Department & Turner Rescue/Emergency Management | Androscoggin | Public Safety | 0 |
| Linneus Fire | Aroostook | Public Safety | 0 |
| Frenchville Fire Dispatch | Aroostook | Public Safety | 0 |
| Hodgdon Fire | Aroostook | Public Safety | 0 |
| Central Aroostook Public Safety | Aroostook | Public Safety | 0 |
| Aroostook County Public Safety | Aroostook | Public Safety | 0 |
| Haynesville FD | Aroostook | Public Safety | 0 |
| North Lakes Fire - Madawaska Lake | Aroostook | Public Safety | 0 |
| North Lakes Fire - Cross Lake | Aroostook | Public Safety | 0 |
| Cape Elizabeth Fire/EMS Dispatch | Cumberland | Public Safety | 0 |
| Harrison Fire/Rescue | Cumberland | Public Safety | 0 |
| Anson/Madison/Starks Ambulance | Somerset | Public Safety | 0 |
| Frye Island Fire Department | Cumberland | Public Safety | 0 |
| Franklin County Sheriff | Franklin | Public Safety | 0 |
| Farmington Police Department | Franklin | Public Safety | 0 |
| Bucksport Fire Department | Hancock | Public Safety | 0 |
| Kennebec River and MidCoast Region VHF Marine | Kennebec | Marine | 0 |
| W1PBR 147.060 MHz | Knox | Amateur Radio | 0 |
| Waldoboro Fire and EMS | Lincoln | Public Safety | 0 |
| Wiscasset Fire/EMS | Lincoln | Public Safety | 0 |
| Hampden Police, Fire and EMS | Penobscot | Public Safety | 0 |
| Central Maine and Quebec Railway (CMQ) and EMRY | Piscataquis | Rail | 0 |
| Sagadahoc County Fire/EMS | Sagadahoc | Public Safety | 0 |