| |||
| phase modulation | |||
| Phase Modulation | |||
|
Modulation de phase : 98 phrases in 10 subjects |
| Automated equipment | 2 |
| Communications | 20 |
| Data processing | 2 |
| Electronics | 60 |
| Information technology | 8 |
| Natural resourses and wildlife conservation | 1 |
| Radio | 1 |
| Technology | 1 |
| Telegraphy | 2 |
| Transport | 1 |