| County | Feed | Genre |
|---|---|---|
| Allegany | Allegany County EMS | Public Safety |
| Allegany | Allegany County Fire | Public Safety |
| Allegany | Allegany County Fire - LTR Passport | Public Safety |
| Allegany | Allegany County Fire and EMS Dispatch | Public Safety |
| Allegany | Allegany County State Police, and Low Band Fire, Cumberland Fire Alert | Public Safety |
| Allegany | Cumberland Fire | Public Safety |
| Allegany | Hagerstown Area NOAA Weather Radio WXM42 | Other |
| Anne Arundel | Anne Arundel County Fire and EMS | Public Safety |
| Anne Arundel | Anne Arundel County Police Dispatch - Southern District | Public Safety |
| Anne Arundel | Anne Arundel County Police Dispatch - Western District | Public Safety |
| Anne Arundel | Anne Arundel County Police, Fire and EMS | Public Safety |
| Baltimore (City) | Baltimore Area CSX, NS, Amtrak, Canton, and PBR Rail | Rail |
| Baltimore | Baltimore City and County Fire | Public Safety |
| Baltimore (City) | Baltimore City and County Fire | Public Safety |
| Baltimore (City) | Baltimore City Fire | Public Safety |
| Baltimore | Baltimore County Fire and EMS - Digital | Public Safety |
| Baltimore | N3HIA 147.3450 and 224.4800 MHz Repeaters | Amateur Radio |
| Calvert | Calvert County Fire and EMS | Public Safety |
| Calvert | Calvert County Fire Dispatch - Low Band | Public Safety |
| Calvert | Calvert County Sheriff and Fire, Maryland State Police | Public Safety |
| Caroline | Caroline, Queen Anne's, and Talbot Counties Fire | Public Safety |
| Carroll | Carroll County Fire and EMS - Digital | Public Safety |
| Carroll | Hagerstown Area NOAA Weather Radio WXM42 | Other |
| Carroll | N3KZS 146.8950 MHz Repeater Link System | Amateur Radio |
| Cecil | Cecil County Fire and EMS | Public Safety |
| Charles | Charles County Fire | Public Safety |
| Charles | Charles County Fire Dispatch | Public Safety |
| Charles | Charles County Sheriff Dispatch - D1/D3 | Public Safety |
| Charles | Charles County Sheriff, Fire and EMS, Maryland State Police | Public Safety |
| Dorchester | Dorchester County Fire and EMS | Public Safety |
| Frederick | Frederick County Airport (KFDK) | Aviation |
| Frederick | Frederick County Fire - Digital | Public Safety |
| Frederick | Frederick County Sheriff, Fire and EMS, State Police | Public Safety |
| Frederick | Hagerstown Area NOAA Weather Radio WXM42 | Other |
| Frederick | K3ERM 448.4250 MHz Frederick ARC Repeater | Amateur Radio |
| Frederick | KB3YBH 444.8000 MHz Frederick D-Star Repeater | Amateur Radio |
| Frederick | NCR - Public Safety Interop | Public Safety |
| Frederick | W3ICF 146.7300 MHz Frederick Repeater | Amateur Radio |
| Garrett | Allegany County State Police, and Low Band Fire, Cumberland Fire Alert | Public Safety |
| Garrett | Garrett County Fire and EMS | Public Safety |
| Harford | Harford County Fire and EMS | Public Safety |
| Harford | Harford County Fire and Rescue | Public Safety |
| Harford | Harford County Police, Fire, and EMS | Public Safety |
| Howard | Howard County Fire and Police | Public Safety |
| Howard | Howard County Fire Dispatch | Public Safety |
| Kent | Kent County Police and Fire Dispatch | Public Safety |
| Montgomery | Montgomery County Fire and EMS - Digital | Public Safety |
| Montgomery | NCR - Public Safety Interop | Public Safety |
| Prince George's | NCR - Public Safety Interop | Public Safety |
| Prince George's | Prince George's County Fire and EMS | Public Safety |
| Prince George's | Prince George's County Fire Tacs - Northside | Public Safety |
| Queen Anne's | Caroline, Queen Anne's, and Talbot Counties Fire | Public Safety |
| Queen Anne's | Queen Anne's County Fire, EMS and Police | Public Safety |
| St. Mary's | St. Mary's County Fire and EMS | Public Safety |
| St. Mary's | St. Mary's County Fire Dispatch | Public Safety |
| Statewide | Wide Area Network Repeater System | Amateur Radio |
| Talbot | Caroline, Queen Anne's, and Talbot Counties Fire | Public Safety |
| Talbot | Talbot County Fire and EMS | Public Safety |
| Talbot | Talbot County Law Enforcement Dispatch | Public Safety |
| Washington | Hagerstown Area NOAA Weather Radio WXM42 | Other |
| Washington | Washington County Fire and EMS - Digital | Public Safety |
| Wicomico | Wicomico County Fire and EMS | Public Safety |
| Worcester | Ocean City Fire and EMS | Public Safety |
| Worcester | Worcester County Fire and EMS | Public Safety |
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