| |||
| Tonfrequenzsignal n | |||
|
AF : 81 phrases in 13 subjects |
| Communications | 23 |
| Electronics | 12 |
| Environment | 1 |
| Finances | 1 |
| General | 2 |
| Information technology | 9 |
| Law | 1 |
| Materials science | 1 |
| Medical | 1 |
| Metallurgy | 3 |
| Radio | 2 |
| Technology | 22 |
| Telecommunications | 3 |
| |||
| Tonfrequenzsignal n | |||
|
AF : 81 phrases in 13 subjects |
| Communications | 23 |
| Electronics | 12 |
| Environment | 1 |
| Finances | 1 |
| General | 2 |
| Information technology | 9 |
| Law | 1 |
| Materials science | 1 |
| Medical | 1 |
| Metallurgy | 3 |
| Radio | 2 |
| Technology | 22 |
| Telecommunications | 3 |