| Frequency | Licensee | FleetID | Fleet User | City | State | Sys_Type | Notes | Additional Notes |
| 866.0125 | CALVERT COUNTY, MARYLAND | 2544 | CO. FIRE (COUNTY EMERG.) | PRINCE FREDERICK | MD | II | ** | ** |
| 866.5125 | CALVERT COUNTY, MARYLAND | 2480 | CO. FIRE (COUNTY MEET) | PRINCE FREDERICK | MD | II | ** | ** |
| 866.9125 | CALVERT COUNTY, MARYLAND | 1808 | CO. FIRE (LINK TO POLICE) | PRINCE FREDERICK | MD | II | ** | ** |
| 867.0125 | CALVERT COUNTY, MARYLAND | 1840 | COUNTY FIRE (MAIN) | PRINCE FREDERICK | MD | II | ** | ** |
| 867.1375 | CALVERT COUNTY, MARYLAND | 1968 | CO. FIRE (MUTUAL AID) | PRINCE FREDERICK | MD | II | ** | ** |
| 867.1875 | CALVERT COUNTY, MARYLAND | 1872 | COUNTY FIRE (TAC #1) | PRINCE FREDERICK | MD | II | ** | ** |
| 867.25 | CALVERT COUNTY, MARYLAND | 1904 | COUNTY FIRE (TAC #2) | PRINCE FREDERICK | MD | II | ** | ** |
| 867.5125 | CALVERT COUNTY, MARYLAND | 1936 | COUNTY FIRE (TAC #3) | PRINCE FREDERICK | MD | II | ** | ** |
| 868.0125 | CALVERT COUNTY, MARYLAND | 2032 | COUNTY FIRE (TRAINING) | PRINCE FREDERICK | MD | II | ** | ** |
| 868.35 | CALVERT COUNTY, MARYLAND | 2512 | COUNTY FIRE (TRAINING) | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2064 | CALVERT COUNTY JAIL | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 1616 | COUNTY POLICE (MAIN) | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 1648 | COUNTY POLICE (TAC #1) | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 1680 | COUNTY POLICE (TAC #2) | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 1712 | COUNTY POLICE (TAC #3) | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 1744 | COUNTY POLICE (TRAINING) | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2416 | COUNTY ANIMAL CONTROL | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2448 | BGE | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2128 | CALVERT CONTROL | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2352 | COUNTY GENERAL SERVICES | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2192 | COUNTY HEALTH DEPARTMENT | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2224 | COUNTY HIGHWAY DEPARTMENT | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2288 | COUNTY PERMITS DEPARTMENT | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2160 | TRANSPORTATION | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2356 | CO. SOLID WASTE DEPT. | PRINCE FREDERICK | MD | II | ** | ** |
| ** | CALVERT COUNTY, MARYLAND | 2320 | COUNTY WATER DEPARTMENT | PRINCE FREDERICK | MD | II | ** | ** |