|
signal code : 51 phrases in 14 subjects |
| Automated equipment | 1 |
| Aviation | 1 |
| Communications | 1 |
| Computers | 5 |
| Electronics | 2 |
| Household appliances | 2 |
| Information technology | 2 |
| Mass media | 2 |
| Military | 5 |
| Nautical | 3 |
| Programming | 4 |
| Rail transport | 2 |
| Technology | 13 |
| Telecommunications | 8 |