| Identifying boundaries of dominant regions dictating spectrum sharing opportunities for large secondary networks Recent countries visiting this post |  |
 | 6 | United States |
 | 1 | |
 | 1 | Japan |
 | 1 | Saudi Arabia |
| Identifying boundaries of dominant regions dictating spectrum sharing opportunities for large secondary networks Recent countries visiting this post | |
| 6 | United States |
| 1 | |
| 1 | Japan |
| 1 | Saudi Arabia |