This system is deprecated, and may no longer be in use or is superseded by another system.
| Category Name | County | Lat | Lon | Range |
|---|---|---|---|---|
| Harford County Common/Shared | 39.54641 | -76.32202 | 18 | |
| Harford County Fire/EMS | 39.54641 | -76.32202 | 18 | |
| Harford County Sheriff | 39.54641 | -76.32202 | 18 | |
| Aberdeen | 39.50669 | -76.16066 | 5 | |
| Bel Air | 39.52735 | -76.3385 | 5 | |
| Havre de Grace | 39.54641 | -76.092 | 5 | |
| Maryland State Police | 39.54641 | -76.32202 | 18 | |
| Unidentified | 39.54641 | -76.32202 | 18 |