 |
| external signals: 15 phrases in 9 subjects |
| Cables and cable production | 1 |
| Electronics | 1 |
| Information technology | 1 |
| Music | 1 |
| Programming | 4 |
| Security systems | 1 |
| Telecommunications | 3 |
| Television | 1 |
| Torpedoes | 2 |
|
| external signals: 15 phrases in 9 subjects |
| Cables and cable production | 1 |
| Electronics | 1 |
| Information technology | 1 |
| Music | 1 |
| Programming | 4 |
| Security systems | 1 |
| Telecommunications | 3 |
| Television | 1 |
| Torpedoes | 2 |