 |
| |||
| TF-System n | |||
| Traegerfrequenzsystem n; Trägerfrequenzsystem n | |||
|
carrier system : 48 phrases in 10 subjects |
| Communications | 8 |
| Electronics | 5 |
| General | 2 |
| Information technology | 2 |
| Medical | 1 |
| Microelectronics | 1 |
| Nuclear physics | 1 |
| Technology | 26 |
| Telecommunications | 1 |
| Transport | 1 |