|
signal intelligence : 47 phrases in 10 subjects |
| Astronautics | 9 |
| Aviation | 1 |
| Electronics | 1 |
| Information security and data protection | 2 |
| Intelligence and security services | 3 |
| Microelectronics | 1 |
| Military | 21 |
| Radioengineering | 1 |
| Technology | 7 |
| Telecommunications | 1 |