| Frequency | Licensee | FleetID | Fleet User | City | State | Sys_Type | Notes | Additional Notes |
| 856.4875 | FREDERICK CO., MARYLAND | 16 | SHERIFF (DISPATCH 2) | FREDERICK | MD | II | ** | ** |
| 857.4875 | FREDERICK CO., MARYLAND | 23 | CO PD SIMULCAST OF MAIN 1 | FREDERICK | MD | II | ** | ** |
| 858.4875 | FREDERICK CO., MARYLAND | 48 | SHERIFF (DISPATCH 2) | FREDERICK | MD | II | ** | ** |
| 859.4875 | FREDERICK CO., MARYLAND | 80 | SHERIFF (TACTICAL) | FREDERICK | MD | II | ** | ** |
| 860.4875 | FREDERICK CO., MARYLAND | 280 | CO. POLICE (DETECTIVES) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 282 | CO. POLICE (DETECTIVES) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 283 | CO. POLICE (DETECTIVES) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 112 | COUNTY SHERIFF (JUDICIAL) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 144 | SHERIFF (POLICE/HIGHWAY) | FREDERICK | MD | II | ** | ** |
| 854.9875 | FREDERICK CO., MARYLAND | 656 | CITY ANIMAL CONTROL | FREDERICK | MD | II | ** | ** |
| 868.225 | FREDERICK CO., MARYLAND | 1008 | CO HEALTH DEPT INSPECTION | FREDERICK | MD | II | ** | ** |
| 868.475 | FREDERICK CO., MARYLAND | 688 | CO. PARK DEPT. (MAINT.) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 400 | CITY ENGINEER/INSPECTION | FREDERICK | MD | II | ** | ** |
| 868.75 | FREDERICK CO., MARYLAND | 272 | CO. PERMITS DEPARTMENT | FREDERICK | MD | II | ** | ** |
| 866.6125 | FREDERICK CO., MARYLAND | 880 | CITY SENIOR CTR SHUTTLE | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 336 | CO. SEWERS & WATER DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 496 | CITY SEWER & WATER DEPT. | FREDERICK | MD | II | ** | ** |
| 866.9125 | FREDERICK CO., MARYLAND | 528 | CITY GENERAL SERVICES | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 912 | COUNTY ROADS DEPARTMENT | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 816 | COUNTY ROADS DEPARTMENT | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 304 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 407 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 344 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 348 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 404 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 432 | CITY STREETS | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 439 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 464 | CITY PARKS & RECREATION | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 480 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 492 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 560 | CITY DPW | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 784 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 848 | CO. PUBLIC WORKS DEPT. | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 144 | MULTI AGENCY (CHANNEL 1) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 752 | FLEETWIDE | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 32016 | LAW MUTUAL AID (CH. 1) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 32048 | LAW MUTUAL AID (CH. 2) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 32080 | EOC (COUNTY OFFICIALS) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 32112 | EOC (COMMAND STAFF) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 32144 | MULTI AGENCY (CHANNEL 2) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 32176 | MULTI AGENCY (CHANNEL 3) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 208 | SHERIFF (CID) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 240 | SHERIFF (COMMAND) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1616 | SHERIFF (SRO) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1648 | SHERIFF (ADMNINISTRATION) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1680 | SHERIFF (TRAFFIC OPS) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1712 | SHERIFF (SWAT) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1776 | SHERIFF (SPECIAL ASSIGN) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1808 | SHERIFF (DISPATCH 3) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1840 | SHERIFF (DISPATCH 4) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1872 | SHERIFF (MSP OPS) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1904 | SHERIFF (MSP TAC) | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 1008 | FIRE DEPT. (FIRE MARSHAL) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16016 | FIRE DEPT. (F ADMIN.) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16048 | FIRE DEPT. (F MAIN) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16080 | FIRE DEPT. (F TAC 30) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16112 | FIRE DEPT. (F TAC 31) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16144 | FIRE DEPT. (F TAC 32) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16176 | FIRE DEPT. (F TAC 33) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 784 | BRUNSWICK PD (TALKAROUND) | BRUNSWICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 592 | CITY SUPERVISORS | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 368 | SEDIMENT CONTROL | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 624 | HEALTH DEPARTMENT | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 720 | PUBLIC WORKS (MAINTENANCE | FREDERICK | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 944 | THURMONT POLICE DEPT. | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16208 | FIRE DEPT. (F TAC 34) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16240 | FIRE DEPT. (F TAC 39) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16272 | FIRE DEPT. (F TAC 40) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16304 | FIRE DEPT. (F TAC 41) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16336 | FIRE DEPT. (F TAC 42) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16368 | FIRE DEPT. (F TAC 43) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16400 | FIRE DEPT. (F TAC 44) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16432 | FIRE DEPT. (F TAC 49) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16464 | FIRE DEPT. (F TAC 70) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16496 | FIRE DEPT. (F TAC 71) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16528 | FIRE DEPT. (F TAC 72) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16560 | FIRE DEPT. (F TAC 73) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16592 | FIRE DEPT. (F TAC 74) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16624 | FIRE DEPT. (F TAC 79) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16656 | FIRE DEPT. (F TAC 80) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16688 | FIRE DEPT. (F TAC 81) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16720 | FIRE DEPT. (F TAC 82) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16752 | FIRE DEPT. (F TAC 83) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16784 | FIRE DEPT. (F TAC 84) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16816 | FIRE DEPT. (F TAC 89) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16848 | FIRE DEPT. (F TAC 20) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16880 | FIRE DEPT. (FIRE 60) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16912 | EMS 10 | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16944 | EMS 50 | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 16976 | FIRE DEPT. (F TRAIN 90) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 17008 | FIRE DEPT. (F TRAIN 91) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 17040 | FIRE DEPT. (F TRAIN 92) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 17072 | FIRE DEPT. (F TRAIN 93) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 17104 | FIRE DEPT. (F TRAIN 94) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 17136 | FIRE DEPT. (F TRAIN 99) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 17168 | FIRE DEPT. (FIREPOL) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 17200 | EMS (CALL-1) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 17232 | EMS (MED-4) | THURMONT | MD | II | ** | ** |
| ** | FREDERICK CO., MARYLAND | 17264 | EMS (MED-8) | THURMONT | MD | II | ** | ** |