 |
| |||
| beacon | |||
| signal | |||
| signal: 476 phrases in 22 subjects |
| Communications | 111 |
| Earth sciences | 2 |
| Electronics | 236 |
| Environment | 3 |
| General | 1 |
| Health care | 1 |
| Industry | 1 |
| Information technology | 39 |
| Lighting other than cinema | 1 |
| Magnetics | 3 |
| Medical | 6 |
| Microsoft | 1 |
| Power lines | 10 |
| Radio | 19 |
| Rail transport | 17 |
| Scientific | 1 |
| Sound recording | 1 |
| Technology | 1 |
| Telecommunications | 7 |
| Telegraphy | 4 |
| Telephony | 1 |
| Transport | 10 |