 |
| |||
| 中频〔无线电〕测向台 | |||
|
medium frequency direction-finding station : 10 phrases in 6 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 4 |
| Oil / petroleum | 1 |
|
| |||
| 中频〔无线电〕测向台 | |||
|
medium frequency direction-finding station : 10 phrases in 6 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 4 |
| Oil / petroleum | 1 |