 |
| signal loss: 33 phrases in 14 subjects |
| Antennas and waveguides | 1 |
| Apollo-Soyuz | 1 |
| Astronautics | 8 |
| Aviation | 1 |
| Computer networks | 1 |
| General | 1 |
| Geophysics | 1 |
| Information technology | 2 |
| Mass media | 3 |
| Military | 4 |
| Oil / petroleum | 1 |
| Radio | 1 |
| Technology | 2 |
| Telecommunications | 6 |