| |||
| annulation du signal radiogoniométrique | |||
|
direction-finding : 53 phrases in 12 subjects |
| Aviation | 6 |
| Commerce | 1 |
| Communications | 18 |
| Electronics | 1 |
| Information technology | 4 |
| Life sciences | 2 |
| Military | 1 |
| Natural sciences | 2 |
| Paragliding | 2 |
| Radio | 1 |
| Technology | 2 |
| Transport | 13 |