| |||
lead | |||
preamble | |||
apex | |||
introductory part (ssn) | |||
leader | |||
| |||
preamble (биты адресации и синхронизации); preambula (биты адресации и синхронизации) |
начальная часть: 35 phrases in 13 subjects |
Aviation | 1 |
Communications | 1 |
Computer networks | 1 |
Finances | 1 |
General | 3 |
Geology | 5 |
Geophysics | 9 |
Mass media | 3 |
Military | 4 |
Nuclear and fusion power | 3 |
Oil / petroleum | 1 |
Oil and gas | 2 |
Telecommunications | 1 |