| |||
| fréquence de fonctionnement optimale | |||
|
optimum frequency : 7 phrases in 3 subjects |
| Communications | 2 |
| Electronics | 4 |
| Radio | 1 |
| |||
| fréquence de fonctionnement optimale | |||
|
optimum frequency : 7 phrases in 3 subjects |
| Communications | 2 |
| Electronics | 4 |
| Radio | 1 |