 |
| |||
| Ionosonde für Schräglotung | |||
| oblique -incidence: 10 phrases in 7 subjects |
| Communications | 3 |
| Electronics | 1 |
| Measuring instruments | 1 |
| Optics branch of physics | 2 |
| Physics | 1 |
| Radio | 1 |
| Technology | 1 |
|
| |||
| Ionosonde für Schräglotung | |||
| oblique -incidence: 10 phrases in 7 subjects |
| Communications | 3 |
| Electronics | 1 |
| Measuring instruments | 1 |
| Optics branch of physics | 2 |
| Physics | 1 |
| Radio | 1 |
| Technology | 1 |