| Category | Subcategory | Lat | Lon | Range |
|---|---|---|---|---|
| St. Mary's County | Fire / EMS | 38.28282 | -76.5195 | 21 |
| St. Mary's County | Schools | 38.31365 | -76.63651 | 10 |
| Amateur Radio | General Amateur Radio | 38.28282 | -76.5195 | 21 |
| Amateur Radio | GMRS | 38.28282 | -76.5195 | 21 |
| Amateur Radio | Skywarn | 38.28282 | -76.5195 | 21 |
