| Modelo | Radio útil mínimo | Radio útil máximo |
|---|---|---|
| 7755 | 1.8 m - 6 pies. | 19.4 m - 63.5 pies. |
| 5560B | 1.8 m - 6 pies. | 15.5 m - 51 pies. |
| 5540F | 1.8 m - 6 pies. | 11.4 m - 37.5 pies. |
| 3340B | 1.2 m - 4 pies. | 9.4 m - 31 pies. |
| 3339 | 1.5 m - 5 pies. | 9.4 m - 31 pies. |
| 3330FL | 1.5 m - 5 pies. | 10.2 m - 33.5 pies. |
| 3330F | 1.5 m - 5 pies. | 7.5 m - 24.5 pies. |